Precise control of micro-rod resonator free spectral range via iterative laser annealing  

作　　者：Qin Wen Wenwen Cui Yong Geng Heng Zhou Kun Qiu 温钦;崔雯雯;耿勇;周恒;邱昆(Key Laboratory of Optical Fiber Sensing and Communication Networks,School of Information and Communication Engineering,University of Electronic Science and Technology of China,Chengdu 611731,China)

机构地区：[1]Key Laboratory of Optical Fiber Sensing and Communication Networks,School of Information and Communication Engineering,University of Electronic Science and Technology of China,Chengdu 611731,China

出　　处：《Chinese Optics Letters》2021年第7期77-81,共5页中国光学快报（英文版）

基　　金：supported by the National Key Research and Development Program of China (No.2019YFB2203103);the National Natural Science Foundation of China (NSFC)(No.61705033)。

摘　　要：We demonstrate a novel method to control the free spectral range(FSR) of silica micro-rod resonators precisely.This method is accomplished by iteratively applying laser annealing on the already-fabricated micro-rod resonators.Fine and repeatable increasing of resonator FSR is demonstrated, and the best resolution is smaller than 5 MHz, while the resonator quality-factor is only slightly affected by the iterative annealing procedure.Using the fabricated micro-rod resonators, single dissipative Kerr soliton microcombs are generated, and soliton repetition frequencies are tuned precisely by the iterative annealing process.The demonstrated method can be used for dual-comb spectroscopy and coherent optical communications.

关 键 词：MICROCAVITIES nonlinear optics pulse propagation temporal solitons 

分 类 号：TN751.2[电子电信—电路与系统]