{"id":26127,"date":"2024-04-16T13:21:33","date_gmt":"2024-04-16T17:21:33","guid":{"rendered":"https:\/\/www.precisionot.com\/?p=26127"},"modified":"2025-06-10T11:18:17","modified_gmt":"2025-06-10T15:18:17","slug":"quest-ce-quun-pluggable-coherent-partie-ii","status":"publish","type":"post","link":"https:\/\/www.precisionot.com\/fr\/whats-in-a-coherent-pluggablepart-ii\/","title":{"rendered":"Qu&#039;y a-t-il dans un plug-in coh\u00e9rent\u00a0? Partie II\u00a0"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"26127\" class=\"elementor elementor-26127\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a66d6d4 e-flex e-con-boxed e-con e-parent\" data-id=\"a66d6d4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8b83721 elementor-widget elementor-widget-text-editor\" data-id=\"8b83721\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span data-contrast=\"auto\">In <\/span><a href=\"https:\/\/www.precisionot.com\/whats-in-a-coherent-pluggable\/\"><span data-contrast=\"none\">Part I<\/span><\/a><span data-contrast=\"auto\">, we discussed the impact coherent pluggables are having on modern optical networks and learned the basics of coherent communication.\u00a0 An explosion of coherent technology advancement in recent years has involved novel <\/span><a href=\"https:\/\/www.precisionot.com\/whats-in-a-coherent-pluggable\/#:~:text=Coherent%20Technology%3A-,Modulation%20Schemes,-and%20Standards%C2%A0\"><span data-contrast=\"none\">modulation schemes<\/span><\/a><span data-contrast=\"auto\"> and various <\/span><a href=\"https:\/\/www.precisionot.com\/whats-in-a-coherent-pluggable\/#:~:text=technique%20employed%20in%20Coherent%20optics%20that%20allows%20an%20increase%20in%20the%20data%20rate%20(also%20used%20in%20wireless%20transmissions%2C%20for%20example)%20is%20dual%2Dpolarization%20(DP)\"><span data-contrast=\"none\">methods to increase data rate<\/span><\/a><span data-contrast=\"auto\">.\u00a0 In Part II, we\u2019ll discuss error correction techniques which further improve performance and industry standards which help ensure interoperability, performance, and compatibility.<\/span><span data-ccp-props=\"{&quot;335559739&quot;:160}\">\u00a0<\/span><\/p><h2><b><span data-contrast=\"none\">Error Correction Techniques for Coherent Pluggables<\/span><\/b><span data-ccp-props=\"{&quot;335559739&quot;:160}\">\u00a0<\/span><\/h2><p><span data-contrast=\"auto\">As we\u2019ve discussed previously, <\/span><a href=\"https:\/\/www.precisionot.com\/precision-ot-lightwave-talking-fec-100g-networks-beyond\/\"><span data-contrast=\"none\">error correction techniques<\/span><\/a><span data-contrast=\"auto\"> have been part of long range data transmission systems for many years and they\u2019ve become even more relevant with the arrival of <\/span><a href=\"https:\/\/go.precisionot.com\/the-rise-of-coherent-400g-free-white-paper\" target=\"_blank\" rel=\"noopener\"><span data-contrast=\"none\">400G pluggable optics<\/span><\/a><span data-contrast=\"auto\">.\u00a0 In Forward Error Correction (FEC), redundant information known as \u201cparity bits\u201d is added to the original data stream before transmission.\u00a0 These parity bits are calculated based on the original data using mathematical algorithms, such as Reed-Solomon codes, convolutional codes, or LDPC (Low-Density Parity-Check) codes.\u00a0 The redundancy introduced by FEC allows the receiver to reconstruct the original data even if some errors occur during transmission.<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/p><p><span data-contrast=\"auto\">Different types of FEC have been used in optical communications for various data rates and applications. In the current environment of Coherent pluggables, the main FEC types are:\u00a0<\/span><span data-ccp-props=\"{&quot;134233279&quot;:true,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/p><ul><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"13\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:360,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Concatenated FEC (C-FEC)* &#8211; used in the 400ZR standard\u00a0<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"13\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:360,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Open FEC (O-FEC) &#8211; part of the OpenROADM and OpenZR+ specifications\u00a0<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"13\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:360,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Staircase FEC (SC-FEC) &#8211; used for the 100GBASE-ZR standard<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><\/ul><p><span data-contrast=\"auto\">*we have often seen OpenZR+ capable modules that also support OIF 400ZR mode(s) of operation &#8212; when in that\/those mode(s), cFEC is used<\/span><span data-ccp-props=\"{&quot;134233279&quot;:true,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/p><p><span data-contrast=\"auto\">The use of one FEC or the other will depend on the application and technology possibilities within the confines of a certain form factor. For example, O-FEC is a stronger coding algorithm, which can handle a higher rate of errors and make a pluggable able to reach longer distances. However, that comes with the drawback of a higher amount of data processing needed within the DSP of the transceiver, which in turn relates to more power consumption and heat dissipation.\u00a0 As a practical example, a 400G coherent pluggable using an application of 400G C-FEC vs the same transceiver working at 400G O-FEC can have a difference of 3W more power consumed when using the latter.\u00a0\u00a0<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/p><h2><b><span data-contrast=\"none\">Coherent Pluggable Standards<\/span><\/b><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/h2><p><span data-contrast=\"auto\">Coherent pluggables must adhere to various industry standards to ensure interoperability, performance, and compatibility with existing optical communication systems.\u00a0 Some of the key standards that govern the design, manufacturing, and deployment of coherent pluggables include:\u00a0<\/span><\/p><p style=\"padding-left: 40px;\"><span data-contrast=\"auto\">i) <\/span><a href=\"https:\/\/www.oiforum.com\/\" target=\"_blank\" rel=\"noopener\"><span data-contrast=\"none\">OIF<\/span><\/a><span data-contrast=\"auto\"> (Optical Internetworking Forum) \u2013 OIF develops interoperable networking specifications that address the needs of the industry.\u00a0 OIF standards include those related to optical specifications, module management, electrical interfaces and networking protocols amongst others. The OIF was the organization that lead the <\/span><a href=\"https:\/\/www.oiforum.com\/technical-work\/hot-topics\/400zr-2\/\" target=\"_blank\" rel=\"noopener\"><span data-contrast=\"none\">400ZR Implemenation Agreement<\/span><\/a><span data-contrast=\"auto\"> to success and has been organizing several plugfests and demos over the last few years to demonstrate the industry adoption and the great success of the 400G coherent pluggable ecosystem.<\/span><span data-ccp-props=\"{&quot;134233279&quot;:true,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/p><p style=\"padding-left: 40px;\"><span data-contrast=\"auto\">ii) <\/span><a href=\"http:\/\/openroadm.org\/\" target=\"_blank\" rel=\"noopener\"><span data-contrast=\"none\">OpenROADM<\/span><\/a><span data-contrast=\"auto\"> &#8211; The OpenROADM MSA group defines and promotes Open API models and optical specifications to create an ecosystem that promotes vendor interoperability, reduces vendor lock-in, and lowers the total cost of network ownership.<\/span><\/p><p style=\"padding-left: 40px;\"><span data-contrast=\"auto\">iii) <\/span><a href=\"https:\/\/www.openzrplus.org\/\" target=\"_blank\" rel=\"noopener\"><span data-contrast=\"none\">Open ZR+<\/span><\/a><span data-contrast=\"auto\"> is an interoperable optical module standard developed by the OpenZR+ MSA (Multi-Source Agreement) group.\u00a0 It was created as an evolution and addition to the 400ZR and OpenROADM specifications.\u00a0 It aims to define a common specification for coherent optical transceivers.\u00a0 While Open ZR+ defines its own specification, it also ensures compliance with relevant industry standards, such as IEEE (Institute of Electrical and Electronics Engineers) and ITU-T (International Telecommunication Unio \u2013 Telecommunication Standardization Sector), to facilitate interoperability and compatibility with existing network infrastructure.\u00a0<\/span><span data-ccp-props=\"{&quot;134233279&quot;:true,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><span data-ccp-props=\"{&quot;134233279&quot;:true,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/p><p style=\"padding-left: 40px;\"><span data-contrast=\"auto\">iv) <\/span><a href=\"https:\/\/www.oiforum.com\/technical-work\/hot-topics\/management\/\" target=\"_blank\" rel=\"noopener\"><span data-contrast=\"none\">CMIS<\/span><\/a><span data-contrast=\"auto\"> (Common Management Interface Specification) \u2013 is a management interface for optical modules and cable assemblies.\u00a0 It provides a defined set of registers and functions for standard module management between hosts and transceivers.\u00a0<\/span><span data-ccp-props=\"{&quot;134233279&quot;:true,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><span data-ccp-props=\"{&quot;134233279&quot;:true,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/p><p style=\"padding-left: 40px;\"><span data-contrast=\"auto\">v) 100G-ZR Standards \u2013 IEEE 802.3ct<\/span><span data-contrast=\"auto\">TM<\/span><span data-contrast=\"auto\"> (100GBASE-ZR) and ITU-T G.698.2 (DP-DQPSK 100G).\u00a0 The IEEE 802.3ct<\/span><span data-contrast=\"auto\">TM<\/span><span data-contrast=\"auto\"> is an amendment aimed at addressing the needs of networks requiring up to ~80km reach where lack of fiber availability drives the need to use one fiber to transmit multiple instances of Ethernet.\u00a0 IEEE 802.3ct<\/span><span data-contrast=\"auto\">TM <\/span><span data-contrast=\"auto\">will enable up to 48 wavelengths on a single fiber, with each wavelength supporting transmission of a separate 100 Gb\/s Ethernet data stream.\u00a0\u00a0\u00a0 ITU-T G.698-2 is a revised ITU standard for \u201cAmplified multichannel DWDM applications with single channel optical interfaces\u201d.\u00a0 It supports a phase-modulated signal using DP-DQPSK (Dual Polarization \u2013 Differential Quadrature Phase-Shift Keying).<\/span><span data-ccp-props=\"{&quot;134233279&quot;:true,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/p><h2><b><span data-contrast=\"none\">Coherent Pluggables: What\u2019s Inside?<\/span><\/b><span data-ccp-props=\"{&quot;134233279&quot;:true,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/h2><p><span data-contrast=\"auto\">At a high level, the inner workings of a coherent pluggable contain an optical engine with three primary components as shown in Figure 1.<\/span><span data-ccp-props=\"{&quot;134233279&quot;:true,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/p><p><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter wp-image-26128 size-full\" src=\"https:\/\/www.precisionot.com\/wp-content\/uploads\/Figure1CoherentBlogPart2.jpg\" alt=\"Coherent Pluggable\" width=\"920\" height=\"275\" srcset=\"https:\/\/www.precisionot.com\/wp-content\/uploads\/Figure1CoherentBlogPart2.jpg 920w, https:\/\/www.precisionot.com\/wp-content\/uploads\/Figure1CoherentBlogPart2-300x90.jpg 300w, https:\/\/www.precisionot.com\/wp-content\/uploads\/Figure1CoherentBlogPart2-768x230.jpg 768w, https:\/\/www.precisionot.com\/wp-content\/uploads\/Figure1CoherentBlogPart2-18x5.jpg 18w, https:\/\/www.precisionot.com\/wp-content\/uploads\/Figure1CoherentBlogPart2-600x179.jpg 600w, https:\/\/www.precisionot.com\/wp-content\/uploads\/Figure1CoherentBlogPart2-64x19.jpg 64w\" sizes=\"(max-width: 920px) 100vw, 920px\" \/><\/p><p style=\"text-align: center;\"><b><span data-contrast=\"auto\">Figure 1<\/span><\/b><span data-contrast=\"auto\">\u00a0 High Level Schematic of Coherent Optical Engine<\/span><span data-ccp-props=\"{&quot;134233279&quot;:true,&quot;335551550&quot;:2,&quot;335551620&quot;:2,&quot;335559739&quot;:160}\">\u00a0<\/span><span data-ccp-props=\"{&quot;134233279&quot;:true,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/p><p><span data-contrast=\"auto\">A more detailed view of the typical components within a coherent pluggable is shown in Figure 2, including polarization control, modulators,\u00a0 oscillators, drivers, TIAs, laser and photodetectors (PDs).\u00a0\u00a0 Most coherent transceivers will have very high-speed Digital-to-Analog (DAC) and Analog-to-Digital (ADC) Converters and a Digital Signal Processor (DSP) which serves as the digital \u201cbrain\u201d of the optical communication system, performing advanced data processing to maximize the capacity, reach and reliability of high-speed transmission.\u00a0 All of these cutting edge components represent years of R&amp;D and investment that went into developing the technologies.\u00a0<\/span><span data-ccp-props=\"{&quot;134233279&quot;:true,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/p><p><img decoding=\"async\" class=\"aligncenter wp-image-26129 size-full\" src=\"https:\/\/www.precisionot.com\/wp-content\/uploads\/Figure2CoherentBlogPart2.jpg\" alt=\"Coherent Pluggable\" width=\"979\" height=\"345\" srcset=\"https:\/\/www.precisionot.com\/wp-content\/uploads\/Figure2CoherentBlogPart2.jpg 979w, https:\/\/www.precisionot.com\/wp-content\/uploads\/Figure2CoherentBlogPart2-300x106.jpg 300w, https:\/\/www.precisionot.com\/wp-content\/uploads\/Figure2CoherentBlogPart2-768x271.jpg 768w, https:\/\/www.precisionot.com\/wp-content\/uploads\/Figure2CoherentBlogPart2-18x6.jpg 18w, https:\/\/www.precisionot.com\/wp-content\/uploads\/Figure2CoherentBlogPart2-600x211.jpg 600w, https:\/\/www.precisionot.com\/wp-content\/uploads\/Figure2CoherentBlogPart2-64x23.jpg 64w\" sizes=\"(max-width: 979px) 100vw, 979px\" \/><\/p><p style=\"text-align: center;\"><b><span data-contrast=\"auto\">Figure 2<\/span><\/b><span data-contrast=\"auto\">\u00a0 More Detailed View of Coherent Optical Engine<\/span><span data-ccp-props=\"{&quot;134233279&quot;:true,&quot;335551550&quot;:2,&quot;335551620&quot;:2,&quot;335559739&quot;:160}\">\u00a0<\/span><\/p><p><span data-contrast=\"auto\">While Figure 2 above represents a generic Coherent transceiver, some other components may be required depending on the transceiver type. For example, a small amplifier embedded in the photonics design for higher TX output power applications, and a tunable optical filter for pluggables that have that capability.<\/span><span data-ccp-props=\"{&quot;134233279&quot;:true,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/p><h2><b><span data-contrast=\"none\">Precision OT\u2019s Coherent Pluggables:<\/span><\/b><span data-ccp-props=\"{&quot;134233279&quot;:true,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/h2><p><span data-contrast=\"auto\">Precision OT\u2019s coherent pluggable portfolio includes different options in the most common form factors: QSFP-DD and QSFP28. Each product can serve a different application or range of applications depending on the customer host and network architecture needs.<\/span><span data-ccp-props=\"{&quot;134233279&quot;:true,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/p><p style=\"padding-left: 40px;\"><span style=\"font-size: 16px; color: var( --e-global-color-text ); font-family: var( --e-global-typography-text-font-family ), Sans-serif; text-align: var(--text-align); background-color: var( --e-global-color-026267c );\" data-contrast=\"auto\">i) <\/span><a style=\"font-size: 16px; font-family: var( --e-global-typography-text-font-family ), Sans-serif; text-align: var(--text-align);\" href=\"https:\/\/www.precisionot.com\/product\/pre-qsfp56dd-zr\/\"><span data-contrast=\"none\">PRE-QSFP56DD-ZR<\/span><\/a><span style=\"font-size: 16px; color: var( --e-global-color-text ); font-family: var( --e-global-typography-text-font-family ), Sans-serif; text-align: var(--text-align); background-color: var( --e-global-color-026267c );\" data-contrast=\"auto\"> \u2013 This product is the standard transceiver that meets the OIF 400ZR IA:<\/span><\/p><ul><li style=\"list-style-type: none;\"><ul><li style=\"list-style-type: none;\"><ul><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"7\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1080,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Single rate 400G<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"7\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1080,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">DP-16QAM<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"7\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1080,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">C-FEC<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"7\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1080,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Tunable C-band DWDM\u00a0<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"7\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1080,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">~ -10 dBm TX power\u00a0<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"7\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1080,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Reach:<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><ul><li><span data-contrast=\"auto\">Up to 40km unamplified<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li><span data-contrast=\"auto\">Up to 120km with amplification<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/li><\/ul><p style=\"padding-left: 40px;\">ii) <a style=\"font-size: 16px; font-family: var( --e-global-typography-text-font-family ), Sans-serif; text-align: var(--text-align);\" href=\"https:\/\/www.precisionot.com\/product\/pre-qsfp56dd-zrht\/\"><span data-contrast=\"none\">PRE-QSFP56DD-ZRHT<\/span><\/a><span style=\"font-size: 16px; color: var( --e-global-color-text ); font-family: var( --e-global-typography-text-font-family ), Sans-serif; text-align: var(--text-align); background-color: var( --e-global-color-026267c );\" data-contrast=\"auto\"> \u2013 Similar to the regular 400G ZR, except with an improvement on the standard to enable use with legacy optical amplifiers which require a\u00a0 higher transmit (HT) power, or for longer reach in unamplified links.<\/span><\/p><ul><li style=\"list-style-type: none;\"><ul><li style=\"list-style-type: none;\"><ul><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"11\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Single rate 400G<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"11\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">DP-16QAM<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"11\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">C-FEC<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"11\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Tunable C-band DWDM<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"11\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">~ 0 dBm TX power\u00a0<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"11\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Reach:<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><ul><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"11\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Up to 80km unamplified<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"11\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Up to 120km with amplification<\/span><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/li><\/ul><p style=\"padding-left: 40px;\"><span data-contrast=\"auto\">iii) <\/span><a href=\"https:\/\/www.precisionot.com\/product\/pre-qsfp56dd-zrxt\/\"><span data-contrast=\"none\">PRE-QSFP56DD-ZRXT<\/span><\/a><span data-contrast=\"auto\"> \u2013 A customized and unique solution that enables 400G up to 120km on unamplified point to point links.<\/span><span data-ccp-props=\"{&quot;134233279&quot;:true,&quot;201341983&quot;:0,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p><ul><li style=\"list-style-type: none;\"><ul><li style=\"list-style-type: none;\"><ul><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"11\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Single rate 400G<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"11\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">DP-16QAM<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"11\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">C-FEC<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"11\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Fixed DWDM ITU ch. 37<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"11\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">~ +4 dBm TX power\u00a0<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"11\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Reach: Up to 120km unamplified<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><\/ul><\/li><\/ul><\/li><\/ul><p style=\"padding-left: 40px;\"><span data-contrast=\"auto\">iv) <a href=\"https:\/\/www.precisionot.com\/product\/pre-qsfp56dd-zrp\/\">PRE-QSFP56DD-ZRP<\/a> \u2013 This optic is the standard pluggable transceiver that meets both the Open ZR+ and the OIF standards.\u00a0\u00a0<\/span><\/p><ul><li style=\"list-style-type: none;\"><ul><li style=\"list-style-type: none;\"><ul><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1080,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Multi-rate 400G-100G<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1080,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">DP-16QAM\/8QAM\/QPSK<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1080,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">O-FEC\/C-FEC<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1080,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Tunable C-band DWDM<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1080,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">~ -10 dBm TX power\u00a0<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1080,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Reach:<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><ul><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1080,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Up to 40km unamplified<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1080,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Up to 480km with EDFA only \/ 1000 km with Raman\/EDFA hybrid<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/li><\/ul><p style=\"padding-left: 40px;\"><span data-contrast=\"auto\">v) <\/span><a href=\"https:\/\/www.precisionot.com\/product\/pre-qsfp56dd-zrht\/\"><span data-contrast=\"none\">PRE-QSFP56DD-ZRPHT<\/span><\/a><span data-contrast=\"auto\"> &#8211;\u00a0 Next generation of 400G ZR+ optics with higher transmit power to accommodate brownfield networks that require similar TX power input into their OLS systems compared to their existing configuration.<\/span><\/p><ul><li style=\"list-style-type: none;\"><ul><li style=\"list-style-type: none;\"><ul><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1080,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Multi-rate 400G-100G<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1080,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">DP-16QAM\/8QAM\/QPSK<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1080,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">O-FEC\/C-FEC<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1080,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Tunable C-band DWDM\u00a0<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1080,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">~ 0 dBm TX power\u00a0<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1080,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Reach:<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><ul><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1080,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Up to 80km unamplified<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1080,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Up to 480km with EDFA only \/ 1000 km with Raman\/EDFA hybrid<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/li><\/ul><p style=\"padding-left: 40px;\"><span data-contrast=\"auto\">vi) <\/span><a href=\"https:\/\/www.precisionot.com\/product-category\/qsfp28\/\"><span data-contrast=\"none\">QSFP28<\/span><\/a><span data-contrast=\"auto\"> 100G ZR Coherent &#8211; Coming Soon\u2026\u2026.<\/span><\/p><p style=\"padding-left: 40px;\"><span data-contrast=\"auto\">The industry has long been awaiting an access\/edge solution <\/span><span data-contrast=\"none\">to enable 100G DWDM interfaces without having to invest in expensive transport equipment or higher cost switches or routers with QSFP-DD ports.\u00a0\u00a0 Coming soon is the first coherent transceiver available in a standard QSFP28 form factor.\u00a0 It will be deployable in nearly all legacy host devices.\u00a0\u00a0<\/span><span data-ccp-props=\"{&quot;134233279&quot;:true,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/p><p style=\"padding-left: 40px;\"><span data-contrast=\"auto\">Features of the QSFP28 100G ZR Coherent include:<\/span><span data-ccp-props=\"{&quot;134233279&quot;:true,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/p><ul><li style=\"list-style-type: none;\"><ul><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1080,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">100GbE\/OTU4<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1080,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">DP-DQPSK<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1080,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">SC-FEC<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1080,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Tunable C-band DWDM\u00a0<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1080,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Externally tunable using Precision\u2019s exclusive TN100-QDD Tuning Module<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1080,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Reach:<\/span><ul><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1080,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Up to 80km unamplified<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1080,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Up to 300km with amplification and dispersion compensation<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1080,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">&lt;5.5W power consumption<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:1080,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">SFF-8636 Compliant<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li><\/ul><\/li><\/ul><\/li><\/ul><h2><b><span data-contrast=\"none\">What Precision OT Brings in addition to Coherent Pluggables:<\/span><\/b><span data-ccp-props=\"{&quot;134233279&quot;:true,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/h2><p><span data-contrast=\"auto\">We have a track record of providing a hands-on approach to replicating networks, maintaining reliability, and providing the highest level of service.\u00a0 \u00a0At Precision OT we:<\/span><span data-ccp-props=\"{&quot;134233279&quot;:true,&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/p><ul><li><span data-contrast=\"auto\">Ensure fully interoperable and compatible coherent modules while avoiding vendor-locked\/proprietary DSP based optics<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"6\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:360,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Follow industry standards for 400ZR, OpenZR+, 100G ZR, SFF and CMIS approved documents and agreements<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"6\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:360,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Perform multi-platform host system integration and compatibility<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"6\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:360,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Test minimum host SW version releases for full functionality<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"6\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:360,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Provide supply chain diversity of all coherent modules<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"6\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:360,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Participate in industry wide standardization groups, plugfests and demos to keep up to date with the latest developments in network technology<\/span><span data-ccp-props=\"{&quot;335551550&quot;:6,&quot;335551620&quot;:6,&quot;335559739&quot;:160}\">\u00a0<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>In Part I, we discussed the impact coherent pluggables are having on modern optical networks and learned the basics of coherent communication.\u00a0 An explosion of coherent technology advancement in recent years has involved novel modulation schemes and various methods to increase data rate.\u00a0 In Part II, we\u2019ll discuss error correction techniques which further improve performance [&hellip;]<\/p>\n","protected":false},"author":34,"featured_media":26136,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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