Sensing characteristics of tapered high-birefringent optical fiber

A. Layeghi; M. I. Zibaii; J. Sadeghi; O. Frazao; P. A. S. Jorge; H. Latifi

doi:10.1117/12.968581

7 November 2012 Sensing characteristics of tapered high-birefringent optical fiber

A. Layeghi, M. I. Zibaii, J. Sadeghi, O. Frazao, P. A. S. Jorge, H. Latifi

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84217O (2012) https://doi.org/10.1117/12.968581
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

A high-birefringent fiber (HBF) was tapered as adiabatic in sequence steps by utilizing a CO₂ laser and its birefringence was measured in fiber loop mirror (FLM) setup. The birefringence of tapered section and total sensor was obtained to be -8.02×10^-2, and 2.46×10^-4, respectively. Then, refractive index (RI) sensitivity increased and temperature sensitivity of the tapered Hi-Bi fiber (THBF) decreased. The sensitivity of the proposed FLM interferometer for RI changes in the range from 1.3380 to 1.3470 was measured to be 389.85 nm/RIU. The temperature sensitivity in the range from 50°C to 90 °C was measured to be -1.19nm/°C.

Citation Download Citation

A. Layeghi, M. I. Zibaii, J. Sadeghi, O. Frazao, P. A. S. Jorge, and H. Latifi "Sensing characteristics of tapered high-birefringent optical fiber", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84217O (7 November 2012); https://doi.org/10.1117/12.968581

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