마이크로밴딩 장주기 광섬유 격자를 이용한 다중위치 압력감지 센서
Multipoint Pressure-detection Sensors using Microbanding-induced Long-period Fiber Gratings
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Abstract
We present a pressure sensor based on the mechanically induced long-period fiber gratings(LPFG) for detecting the multi-location strain variation. The theoretical analysis is performed using a graphic method for a weakly guiding step-index fiber. The calculated results are in good agreement with the experimental results. In this study, from the fact that the optical parameters of a single-mode fiber slightly differ from manufacturing company to manufacturing company, the multipoint pressure-detection sensor systems composed two identical LPFGs are realized. When the pressure is applied two LPFG sensors at once, the resonance peaks are separated as much as about 40 ㎚. These types of sensor systems are well suited as a multipoint monitoring of strain or temperature in the ship or the smart structure.
참고문헌 (8)
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