Pushing optical fiber communications to the Shannon limit: Advanced modulation formats and digital signal processing

摘要

Large-scale data centers store a huge amount of the world's data in their cloud servers. To ensure fast, reliable, low power, and low cost transmission, the communication channel between the server units is optical, at the highest available data rates of 100 - 400 Gbps. Consequently, all future solutions should rely on advanced communication techniques combined with high order modulation and digital signal processing (DSP).