Generation of Spectrally-Efficient Superchannel Using Optical Frequency Comb Referencing and Active Demultiplexing

TL;DR

This paper demonstrates the generation of a spectrally-efficient superchannel with ultra-low phase noise optical carriers over 160 GHz, enabling successful transmission of multiple high-capacity channels using advanced comb referencing and demultiplexing techniques.

Contribution

It introduces a novel method for generating ultra-low phase noise optical carriers from a gain-switched comb source and demonstrates high-capacity transmission over a broad bandwidth.

Findings

Generated 17 demultiplexed channels with 64-QAM at 5 GBaud

Achieved ultra-low linewidth below 10 Hz

Utilized optical frequency comb referencing and active demultiplexing

Abstract

We generate multiple optical carriers with ultra-low phase noise, over a useable bandwidth of 160 GHz, from an externally injected gain-switched comb source with exceptional low linewidth below 10 Hz. We show successful transmission of 17 demultiplexed channels using 64-quadrature amplitude modulation signals at 5 GBaud.