Optical microcavity dispersion measurement method based on dispersion line type real-time calibration

By generating optical sidebands with fixed frequency intervals on both sides of the resonant peak of the optical microcavity, and combining mixer demodulation and Mach-Zehnder interferometer calibration, the shortcomings of accuracy and speed in microcavity dispersion measurement are solved, and high-precision, automated dispersion measurement is realized.

CN122084101APending Publication Date: 2026-05-26NATIONAL INSTITUTE OF METROLOGY CHINA
0 Cites 1 Cited by

Patent Information

Application Number
CN202610074141.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-20
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing microcavity dispersion measurement techniques struggle to simultaneously achieve high precision, wide spectral density, and high measurement speed.

Method used

The optical microcavity dispersion measurement method based on real-time calibration of dispersion line shape utilizes an electro-optic modulator to generate optical sidebands with fixed frequency intervals on both sides of the resonance peak of the optical microcavity. Combined with mixer demodulation and Mach-Zehnder interferometer for dynamic calibration, the dispersion measurement results of the microcavity are generated.

Benefits of technology

It achieves high-precision, automated microcavity dispersion measurement, improves measurement stability and resistance to environmental interference, and overcomes the problem of stringent environmental stability requirements in traditional methods.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention provides an optical microcavity dispersion measurement method based on dispersion linetype real-time calibration, which is applied to the technical field of microcavity dispersion measurement, and comprises the following steps: converting the position extraction of an optical sideband into the position extraction of a dispersion linetype, and demodulating the optical sideband through a frequency mixer to obtain a sideband harmonic peak of a specific dispersion linetype; adjusting the phase difference between a modulation signal and a demodulation signal of the high-stability radio frequency source, identifying the position of a dispersion line type sideband harmonic peak, and extracting the frequency interval of the sideband harmonic peaks on the two sides of each resonance mode; dynamically calibrating the optical fiber Mach-Zehnder interferometer based on the number of sinusoidal signal cycles in the frequency interval of the dispersion line type sideband resonance peaks on the two sides of each resonance mode to obtain a calibrated Mach-Zehnder interferometer; and generating a dispersion measurement result of the optical microcavity according to the calibrated Mach-Zehnder interferometer interference signal. According to the invention, the dispersion measurement precision and the automation level can be improved.
Need to check novelty before this filing date? Find Prior Art