CAJ | 학술논문

光纤应力传感器是以光纤传感技术为基础的应变、应力测量系统，具有重要的民用、军用价值。其中有一种能用于大型建筑物形变监测的传统的光纤应力传感器又叫 SOFO。它使用迈克尔逊干涉仪作为信号解调器，因为需要扫描，所以响应时间较长。为了解决这一问题，出现了以微波作为副载波的应力传感器。但是其中使用的光环行器又引入了较大误差，使得系统性能不理想。本文分析了误差原因，并使用耦合器、相位比较器分别替代了环形器、乘法器，取得了良好的实验结果。
광섬응력전감기시이광섬전감기술위기출적응변、응력측량계통，구유중요적민용、군용개치。기중유일충능용우대형건축물형변감측적전통적광섬응력전감기우규 SOFO。타사용매극이손간섭의작위신호해조기，인위수요소묘，소이향응시간교장。위료해결저일문제，출현료이미파작위부재파적응력전감기。단시기중사용적광배행기우인입료교대오차，사득계통성능불이상。본문분석료오차원인，병사용우합기、상위비교기분별체대료배형기、승법기，취득료량호적실험결과。
Fiber tension sensor is a fiber sensing system for measuring strain and stress,and it has significant commer-cial and military value.One of the traditional fiber tension sensors can be used to monitor the deformation of build-ings,and is also known as SOFO.It uses Michelson interferometer as signal demodulator.Its response time is long as scanning is needed.In order to solve this problem,fiber tension sensors using microwave as subcarrier is presented.However,the optical circulator used in it brings large error,which makes the performance unsatisfacto-ry.The error sources was analyzed,and optical coupler and phase comparator were used to replace the optical circula-tor and the multiplier.Good experiment result has been gotten.