Compact photonic crystal fiber refractometer based on modal interference

Wei Chang Wong; Chi Chiu Chan; Zhi Qiang Tou; Li Han Chen; Kam Chew Leong

doi:10.1117/12.884760

17 May 2011 Compact photonic crystal fiber refractometer based on modal interference

Wei Chang Wong, Chi Chiu Chan, Zhi Qiang Tou, Li Han Chen, Kam Chew Leong

Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 77531Y (2011) https://doi.org/10.1117/12.884760
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada

Abstract

A compact photonic crystal fiber (PCF) refractometer based on modal interference has been proposed by the use of commercial fusion splicer to collapse the holes of PCF to form a Mach Zehnder interferometer by splitting the fundamental core mode into cladding and core modes in the PCF. Collapsed of holes was done at the interface between the single mode fiber and PCF, and the PCF's end. The shift of the interference fringes was measured when the sensor was placed into different refractive index liquid. High linear sensitivity of 253.13nm/RIU with resolution of 3.950×10^-5RIU was obtained.

Citation Download Citation

Wei Chang Wong, Chi Chiu Chan, Zhi Qiang Tou, Li Han Chen, and Kam Chew Leong "Compact photonic crystal fiber refractometer based on modal interference", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77531Y (17 May 2011); https://doi.org/10.1117/12.884760

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