Temperature-independent refractive index sensor based on a Bragg grating in highly birefringent microfiber

Yang Ran; Long Jin; Li-Peng Sun; Jie Li; Bai-Ou Guan

doi:10.1117/12.974355

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7 November 2012 Temperature-independent refractive index sensor based on a Bragg grating in highly birefringent microfiber

Yang Ran, Long Jin, Li-Peng Sun, Jie Li, Bai-Ou Guan

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Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84217V (2012) https://doi.org/10.1117/12.974355
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

We demonstrated a novel method for temperature-independent refractive index measurement by use of a Bragg grating fabricated in a highly birefringent rectangular microfiber. The two reflective peaks corresponding to two polarization axes exhibit almost identical temperature sensitivity of 12.01 pm/°C and different responses to ambient refractive index of 38.9 and 46nm/RIU at RI of 1.36, respectively. By monitoring the wavelength separation between the two peaks, temperature-independent refractive index measurement can be achieved.

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Yang Ran, Long Jin, Li-Peng Sun, Jie Li, and Bai-Ou Guan "Temperature-independent refractive index sensor based on a Bragg grating in highly birefringent microfiber", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84217V (7 November 2012); https://doi.org/10.1117/12.974355

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