Flat-top optical frequency comb block generation using InP-based Mach-Zehnder modulator

Abstract

A nine-channel optical frequency comb block with a low intensity deviation is generated successfully by adopting an asymmetric push-pull drive method for a symmetric dual drive Mach-Zehnder modulator. The flat-top optical frequency comb block with an intensity deviation of less than 1 dB is realized for the first time by using a compact and low-drive voltage InP-based Mach-Zehnder modulator.