Optical micro-cavity light-frequency comb generating system based on comb tooth feedback control and regulation

Abstract

The invention discloses an optical micro-cavity light-frequency comb generating system based on comb tooth feedback control and regulation, and belongs to the optical field. The system comprises a pumping laser, an optical micro-cavity, a feedback regulation and control loop and the like. After parts of comb teeth in light-frequency comb signals generated in the optical micro-cavity are filtered, amplified or regenerated by the feedback regulation and control loop, the feedback regulation and control loop and the pumping laser stimulate the optical micro-cavity together, and the high performance of an optical micro-cavity light-frequency comb is realized by the formed feedback regulation and control loop. Compared with the existing system for generating a light-frequency comb by using a single pumping layer, the optical micro-cavity light-frequency comb generating system has the advantages that the threshold value generated by the light-frequency comb can be reduced, the coherence is increased, controlled comb tooth gaps are formed, and tolerance on pumping conditions is improved. Moreover, the optical micro-cavity light-frequency comb generating system is simple in structure and high in repeatability; and the performance improvement effect of the system is remarkable.

Description

technical field [0001] The invention relates to the fields of integrated photonics and nonlinear optics. In particular, it relates to an optical microcavity optical frequency comb generation system based on comb tooth feedback control. Background technique [0002] The optical frequency comb is a new type of light source composed of a series of coherent light waves with equal frequency intervals and narrow linewidths. It looks like neatly arranged comb teeth on the spectrum, hence the name. Widely used in precision spectrum, time and frequency measurement, clock synchronization and calibration, long-distance coherence, high-performance satellite navigation, optical communication and network synchronization, high-precision tracking and ranging, etc. [0003] Traditional optical frequency comb technology requires a large volume of mode-locked lasers, which is not only expensive, but also has relatively high requirements for the application environment. The compact and easy-...

AI Technical Summary

Problems solved by technology

The system composition is relatively simple, but the generation threshold of the optical frequency comb is almost completely dependent on the performance of the optical microcavity, which usually puts high requirements on the power of the pump laser, which is not conducive to the miniaturization of the system and the reduction of cost

Moreover, the lack of an active optimization mechanism cannot achieve coherence and controllable comb spacing, which hinders the popularization and application of optical microcavity optical frequency combs.

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