News: Optoelectronics
22 March 2024
At the Optical Fiber Communication Conference & Exposition (OFC 2024) in San Diego, CA, USA (26–28 March), materials, networking and laser technology firm Coherent Corp of Saxonburg, PA, USA is demonstrating its 800Gbps coherent transceiver module in QSFP-DD form factor, operated in 800G ZR mode transmitting over 9000ps/nm of dispersion (equivalent to about 450km of fiber).
Following the success of 400G ZR/ZR+ digital coherent optics (DCO), customers are looking for an 800G version of DCO to upgrade their transmission speed to the next level. Hyperscale data centers are driving the demand of 400G/800G DCO for data-center interconnect (DCI) applications, while service providers are starting to adapt the concept of IP-over-DWDM using DCO modules for metro and regional networks. QSFP-DD and OSFP are the most popular and compact form factors used in DCI applications.
The new 800G transceiver uses Coherent’s 140Gbaud IC-TROSA optical subassembly, which features a high-efficiency indium phosphide modulator and receiver combined with a proprietary embedded wavelength-tunable laser. The Coherent 800G QSFP-DD transceiver has several operating modes that enable it to deliver up to 1000km of reach at 800Gbps and up to 2000km at 400Gbps in well-designed networks.
“Building on the success of our 140Gbaud IC-TROSA, demonstrated at ECOC 2023 in Glasgow, Scotland, Coherent is developing compact 800G coherent modules in both QSFP-DD and OSFP form factors,” says Dr Beck Mason, executive VP, Telecommunications. “These next-generation solutions not only enable higher capacity per port and lower network cost but can also significantly extend the transmission distance for 400G applications when compared to current-generation solutions,” he adds.
Alpha samples of the module are currently shipping to customers. Beta versions are planned for third-quarter 2024.
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- Source: https://www.semiconductor-today.com/news_items/2024/mar/coherent-220324.shtml
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