Journal of the Korean Institute of Illuminating and Electrical Installation Engineers (조명전기설비학회논문지)

The Korean Institute of IIIuminating and Electrical Installation Engineers (한국조명전기설비학회)
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Polarimetric Fiber Pressure Sensor Incorporating Polarization-Diversity-Loop-Based Sagnac Interferometer

편광상이 고리 구조 기반 사냑 간섭계를 이용한 편광 간섭형 광섬유 압력 센서

  • Ryu, Uh-Chan (Pukyong National University, Specialized Graduate School Science & Technology Convergence LED Convergence Engineering) ;
  • Choi, Sung Wook ;
  • Lee, Yong Wook (Pukyong National University, School of Electrical Engineering)
  • Received : 2015.03.09
  • Accepted : 2015.06.19
  • Published : 2015.07.30
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Abstract

In this paper, we demonstrated a polarimetric fiber pressure sensor using a polarization-diversity-loop-based Sagnac interferometer(PDLSI) composed of polarization-maintaining fiber(PMF) and a fiber Bragg grating(FBG). In order to compare the pressure sensitivity for various kinds of PMF, three kinds of bow-tie PMF were employed as sensor heads. The maximum pressure sensitivity was measured as approximately -15.07nm/MPa, and an R2 value to represent sensor linearity was measured as ~0.992 at the sensor system using corresponding PMF over a pressure range of 0-0.3MPa. An FBG was utilized and located adjacent to the PMF segment for compensating temperature-induced errors in the measurement of pressure. The pressure sensitivity of the proposed sensor was improved by approximately four times compared with the previously reported pressure sensor based on polarization-maintaining photonic crystal fiber.

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References

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