This article unpacks the technologies powering this leap (silicon photonics, advanced modulation, and co-packaged optics), compares deployment paradigms, and delivers a tactical upgrade roadmap that balances performance, cost, and scalability. The transmitter converts the electrical signals generated by the server and GPU into optical signals that can be transmitted through optical fibers through lasers (LDs). Optical communications are emerging as the next AI computing infrastructure frontier, driven by data interconnection bottlenecks. Lumentum's order book is full through 2028, reflecting surging demand for 800G and 1. Modulation and Encoding:Current 800G modules predominantly use PAM4 (4-level Pulse Amplitude Modulation) signaling at 100 Gbaud per lane. The technology leverages advanced DSP (Digital Signal Processing) for equalization, FEC (Forward Error.
Read More