智能系统学报
智能繫統學報
지능계통학보
CAAI TRANSACTIONS ON INTELLIGENT SYSTEMS
2008年
2期
177-180
,共4页
fiber optic sensor%white light interferometer%multiplexing technique%twin-sensor-array%temperature compensation%Michelson interferometer
A multiplexed white light interferometric fiber optic twin-sensor-array was designed to monitor the structural health of large buildings. In this sensing system, based on a Michelson interferometer, an optical path matching technique is used to demodulate each twin-sensor. Each twin-sensor-array consists of a 2×N sensing element linked by a 3 dB coupler. When one of the twin-sensor is used to measure strain, variations caused by temperature can be compensated for by referencing the other twin-sensor. The multiplexing capacity of the sensing scheme has been analyzed and experimental results with a 2×3 twin-sensor-array are given.
