BIDIRECTIONAL OPTICAL-CARRYING MICROWAVE RESONANCE SYSTEM BASED ON CIRCULATOR STRUCTURE AND METHOD FOR DETECTING ANGULAR VELOCITY BY SAID SYSTEM
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Applicant
Zhejiang University
Representative
Studio Torta S.p.A.
Application number
EP18938457A1
Kind
A1
Document number
3875903
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BIDIRECTIONAL OPTICAL-CARRYING MICROWAVE RESONANCE SYSTEM BASED ON CIRCULATOR STRUCTURE AND METHOD FOR DETECTING ANGULAR VELOCITY BY SAID SYSTEM

3875903 - EP18938457A1 - EPO

Application Oct 31, 2018 - Publication Sep 08, 2021

Kaichen SONG Jinlong YU Lingyun YE Ju WANG

Abstract

A bidirectional optical-carrying microwave resonance system based on a circulator structure and a method for detecting angular velocity by said system. A high-stability optical-carrying microwave of which polarization states in forward and reverse directions are perpendicular is generated in an optical fiber ring by utilizing a regenerative mold locking technology, a cavity length control technology, and a polarization state separation technology, and the optical-carrying microwave is used for measuring a rotational angular velocity. The circulator structure is adopted and the bidirectional optical-carrying microwave resonance is achieved by means of a bidirectional regenerative mode locking technology. A reciprocal bidirectional optical-carrying microwave resonance system is achieved on the basis of a non-reciprocal error elimination technology of a wide-spectrum optical interferometer. The polarization state separation technology is adopted to achieve dual-wavelength separation of optical signals and the perpendicular polarization state is adopted for opposite transmission in a sensitive ring, so that the detection capability of the sensitive ring is improved. The cavity length control technology is adopted to lock a microwave oscillation frequency in one direction to a high-stability standard-time reference source, so that a relative cavity length of an optical resonant cavity is stabilized. The system has the characteristics of high practicability, high measurement precision and the like.

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