Coherent Technologies and Requirements in Next-Generation MSO Networks

Abstract

Cable MSO networks are undergoing a fundamental shift from centralized to distributed architectures, and from analog to digital optics. Interoperable coherent optics based on CableLabs specifications can serve as a key part of that transition.

Optimizing Probabilistic Constellation Shaping for Amplifier-Less Coherent Optical Links

“…Despite the tremendous potential of coherent optical interfaces, their commercial success in the competitive shortreach market still depends on significant further improvements in terms of power consumption and cost [6]- [8]. Several recent studies have been addressing this challenge through different approaches, namely by using enhanced modulation techniques [9]- [12] in order to reduce the cost per bit, and by simplifying the transmitter [13] and/or receiver [14]- [16] hardware.…”