Polarization-dependent bending sensor with temperature insensitivity

Oh-Jang Kwon; Hyun-Joo Kim; Jeehyun Kim; Byung Sup Rho; Chang-Seok Kim; Myung-Yong Jeong; Young-Geun Han

doi:10.1117/12.966389

17 October 2012 Polarization-dependent bending sensor with temperature insensitivity

Oh-Jang Kwon, Hyun-Joo Kim, Jeehyun Kim, Byung Sup Rho, Chang-Seok Kim, Myung-Yong Jeong, Young-Geun Han

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84212O (2012) https://doi.org/10.1117/12.966389
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

We propose the temperature-insensitive bending sensor based on a hole-assisted single polarization fiber (SPF). Without fiber grating structures, the SPF-based sensing probe can provide the sensing technique to measure the bending change. If bending is applied to the SPF, two cutoff wavelengths are shifted to shorter wavelengths and the transmission power is diminished because the structural deformation of the SPF induced by bending changes birefringence depending on principle axes of the SPF. However, the applied temperature variation has no effect on the birefringence change severely and two cutoff wavelengths are not shifted by changing temperature. Therefore, the proposed SPF-based sensing probe with temperature insensitivity can measure the bending change effectively.

Citation Download Citation

Oh-Jang Kwon, Hyun-Joo Kim, Jeehyun Kim, Byung Sup Rho, Chang-Seok Kim, Myung-Yong Jeong, and Young-Geun Han "Polarization-dependent bending sensor with temperature insensitivity", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84212O (17 October 2012); https://doi.org/10.1117/12.966389

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