Full Stabilization of a Microresonator based Optical Frequency Comb

TL;DR

This paper demonstrates the stabilization of an optical frequency comb generated in a microresonator, achieving control over its parameters and direct stabilization to a microwave standard, advancing integrated photonics applications.

Contribution

It introduces a method to control and stabilize a microresonator-based optical frequency comb using pump laser parameters and microwave beat note stabilization.

Findings

Successful control of comb parameters via pump laser adjustments

Generation of a microwave beat note for stabilization

Stable comb operation aligned with microwave standards

Abstract

We demonstrate control and stabilization of an optical frequency comb generated by four-wave mixing in a monolithic microresonator with a mode spacing in the microwave regime (86 GHz). The comb parameters (mode spacing and offset frequency) are controlled via the power and the frequency of the pump laser, which constitutes one of the comb modes. Furthermore, generation of a microwave beat note at the comb's mode spacing frequency is presented, enabling direct stabilization to a microwave frequency standard.