Deterministic soliton mode-locking method for Kerr optical combs in optical microcavities

Abstract

The invention discloses a deterministic soliton mode-locking method for a Kerr optical comb in an optical microcavity. The power of the pumping laser is set to be lower than the parametric oscillation threshold power of the optical microcavity, and the generated pumping laser is modulated. The frequency of the modulated signal is the same as The free spectrum width of the optical microcavity is consistent, and the modulated signal amplitude is calculated according to the third-order dispersion value of the optical microcavity. The phase-modulated pump laser is coupled into the optical microcavity through the microcavity coupler, and the coupling coefficient is controlled so that the optical microcavity The cavity works in the critical coupling state. In the optical microcavity, the pump laser is scanned from the long wavelength direction to the short wavelength direction, and the output spectrum of the pump laser is collected at the output of the optical microcavity. Once the current spectrum of the pump laser has a smooth package network, indicating that the soliton mode locking has been completed at this time, stop scanning. The present invention overcomes the problems of strong randomness, poor reliability and susceptibility to disturbance of the existing Kerr optical comb mode-locking scheme, thereby realizing soliton mode-locking rapidly and deterministically.

Description

technical field [0001] The invention belongs to the technical field of optical communication, and more specifically relates to a deterministic soliton mode-locking method of a Kerr optical comb in an optical microcavity. Background technique [0002] The invention of the optical frequency comb, or optical comb for short, provided a revolutionary tool for precision time / frequency measurements. The optical comb is like an optical gear set, which can accurately divide the optical frequency to a lower microwave frequency, and realize the precise transmission of the optical frequency standard to the microwave frequency, thereby promoting the development of optical clocks and greatly improving the accuracy of time measurement. Spend. In addition, optical combs are also used in many fields such as precision spectroscopy, astronomical spectral calibration, ultra-stable microwave oscillators, and high-speed optical communications. Currently, the vast majority of optical combs are b...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a deterministic soliton mode-locking method for Kerr optical combs in optical microcavities, to overcome the strong randomness, poor reliability and vulnerability of existing Kerr optical comb mode-locking schemes. Disturbance and other problems, so as to quickly and deterministically achieve soliton mode locking

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