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Fiber tension sensor using microwave as subcarrier
Author(s): 
Pages: 689-692
Year: Issue:  6
Journal: Laser & Infrared

Keyword:  fiber sensingfiber tension sensoroptical circulator;
Abstract: 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.
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