Source Photonics, along with Keysight and Broadcom, demonstrated 800G 4x200G LR4 OSFP transceivers ,marking a critical milestone for the development of next generation 200G/lambda based 800G and 1.6T optical transceivers.
The 800G LR4 OSFP optical modules incorporate the high power single lambda 200G PAM4 EML lasers assisted with 3D hybrid electro-optical on-board packaging for superior RF characteristics and with a LAN-WDM grid, low-loss package interconnect design and a WDM multiplexer, exceeding the wavelength requirements for the telecom-grade LAN-WDM. The receiving end consists of a highly integrated PIN+TIA receiver array combined with the high-performance start-of-the-art 5nm CMOS DSP equalization algorithm, and the transmission distance can reach up to 10km.
Compared with the first generation using a single lambda 100G PAM4 EML lasers, the 800G LR4 optical modules reduce the number of lasers by 50%, effectively reducing costs, simplifying manufacturing processes, and improving production yield.
800G optical modules as the default configuration of choice for the latest generation of optical transmission systems, have projected huge market application potential. At the same time, in order to satisfy the strong desire for low-cost, low-latency and low-power consumption by next-generation telecom metro applications, the 800G 4x200G LR4 10km direct detection solution has attracted more attention from operators, equipment manufacturers and optical module vendors over the corresponding coherent solutions. The industrial supply chain of single-lambda 226Gb/s high-speed optical chips, DSPs and electrical chips, and RF packaging technologies related to the direct detection solutions has gradually matured.
