Research On The Key Theory Of Kerr Optical Frequency Combs Generation Based On Microring Resonator

The advent of optical frequency comb technology provides a reliable solution for accurate measurement of optical frequency and time.In recent years,Kerr frequency comb with excellent optical comb performance and simple experimental configuration based on micro-resonators has aroused general interests.Since the Kerr optical frequency combs have been observed in the micro-resonator,the theoretical basis has been improved a lot and the experiment has made great progress.However,there are still many shortcomings in the current Kerr optical frequency combs generation,which severe limits its further application.We are about carrying out the key theoretical research on the principle and mechanism of Kerr combs generation,and the characteristic and related applications of Kerr combs based on the micro-ring resonator.The main work and innovation are as follows:1.Based on the research of optical parametric oscillation caused by Kerr nonlinear effect in the micro-resonator,we analyze the evolution of Kerr optical comb in frequency domain.The LLE model based on the optical pulses transmission equation in the micro-resonator including the loss,dispersion and nonlinear effects,describe the evolution of Kerr frequency combs.The simulation of Kerr frequency combs is realized by MATLAB.It is divided into four stages according to the simulation results,and the manifestations and mechanisms of Kerr combs at different stages are analyzed and compared with the recent experimental results.2.By changing the detuning value of the pump C.W.,the simulation of the dissipative cavity soliton's evolution in the micro-ring resonator is realized.According to the simulation results,the evolution process of the micro-ring dissipative cavity soliton is divided into four stages,too.The noise characteristics and coherence characteristics of the corresponding optical combs at different stages are analyzed,and the fundamental mechanism of the dissipative cavity soliton and the corresponding phase-locked optical frequency combs are revealed.In addition,the flatness of the Kerr combs is improved by properly tuning the pumped optical power.3.In this paper,we propose a new photonic channelization receiver scheme based on Kerr's optical comb,which has the advantage of a wide spectrum coverage and high repetition frequency.Firstly,the channelization receiver system based on Kerr optical frequency comb is established in OptiSystem.The feasibility of the channelized reception scheme is verified by realizing the frequency detection of the specific broadband RF signal.Then,the good receiving performance has been proved by the result of detecting the microwave signal loaded on the broadband RF signal,which validates the photonic channelization receiver system based on Kerr combs further.