A curvature sensor using a novel side-leakage photonic crystal fiber based Sagnac interferometer

Shuqin Lou; Xinzhi Sheng; Liwen Wang; Guolu Yin

doi:10.1117/12.968600

17 October 2012 A curvature sensor using a novel side-leakage photonic crystal fiber based Sagnac interferometer

Shuqin Lou, Xinzhi Sheng, Liwen Wang, Guolu Yin

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84212S (2012) https://doi.org/10.1117/12.968600
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

A novel side-leakage PCF with high birefringence is designed and fabricated by introducing a linear side-leakage region into both sides of the elliptical Ge-doped core. A curvature sensor using the homemade side-leakage PCF based Sagnac interferometer is proposed and demonstrated experimentally. Experimental result shows that a high bending sensitivity of 10.798nm/m^-1 can be achieved when the linear side-leakage region is in the vertical with the direction of curvature. With the measuring matrix obtained from sensor's sensitivity matrix by measuring the wavelength shifts of two dip in the transmission spectrum, this sensor can also realize simultaneous measurement of curvature and temperature.

Citation Download Citation

Shuqin Lou, Xinzhi Sheng, Liwen Wang, and Guolu Yin "A curvature sensor using a novel side-leakage photonic crystal fiber based Sagnac interferometer", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84212S (17 October 2012); https://doi.org/10.1117/12.968600

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