A four-comb synchronization generation method based on double-ring integrated resonator

Abstract

The present invention proposes a method for synchronizing generation of four optical combs based on a double-ring integrated resonator. The method enables a pump source to output pump light, provide a pump to a gain module to generate laser light, and circulate and propagate in the double-ring integrated resonator. , cut off the optical path of the second branch, so that the laser can only propagate in the cavity through the first branch, and generate a double optical comb; cut off the optical path of the first branch, restore the optical path of the second branch, so that the laser can only pass through The second branch propagates in the cavity and generates a double optical comb; restore the optical paths of the first branch and the second branch, record the repetition frequency, adjust the optical path introduced by the two branches, and then generate a synchronous four optical comb. The method of the invention has good coherence, good integratability, good repeatability of repetition frequency, and is low in cost and easy to implement.

Description

technical field [0001] The invention belongs to the field of laser technology, and in particular relates to a method for synchronizing generation of four optical combs based on a double-ring integrated resonant cavity. Background technique [0002] Long-distance high-precision laser ranging technology is a key technology component in cutting-edge aerospace fields such as satellite formation flight, and is of great significance to the development of deep space exploration science in my country. Compared with the traditional laser ranging method, the new laser ranging method based on the optical comb has the advantages of long range, high precision and fast speed, such as the beat frequency interference ranging method between optical comb modes proposed by Minoshima et al. The two-comb optical sampling interferometric ranging method proposed by Coddington et al. in 2018, and the three-comb multi-heterodyne interferometric ranging method proposed by Zhang Fumin et al. in 2018. ...

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Problems solved by technology

In particular, the dual-ring integrated resonator as a potential implementation device still lacks a method to simultaneously generate four optical combs

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