All-fiber Sagnac loop hybrid interferometer based on a highly birefringent photonic crystal fiber with two asymmetric cores and its sensing applications

Khurram Naeem; Bok Hyeon Kim; Bongkyun Kim; Youngjoo Chung

doi:10.1117/12.2184255

1 July 2015 All-fiber Sagnac loop hybrid interferometer based on a highly birefringent photonic crystal fiber with two asymmetric cores and its sensing applications

Khurram Naeem, Bok Hyeon Kim, Bongkyun Kim, Youngjoo Chung

Author Affiliations +

Proceedings Volume 9655, Fifth Asia-Pacific Optical Sensors Conference; 96551X (2015) https://doi.org/10.1117/12.2184255
Event: Fifth Asia Pacific Optical Sensors Conference, 2015, Jeju, Korea, Republic of

Abstract

We experimentally demonstrate a novel all-fiber Sagnac loop hybrid interferometer (SLHI) based on a highlybirefringent photonic crystal fiber with two asymmetric cores. Two cores exhibit unique birefringence properties and the light launched into them propagates with negligible coupling. Fast Fourier transform analysis of the transmission spectrum shows six frequency peaks in the spatial domain due to multiple interferences comprising the intra-core and inter-core mode interferences characterized by the four-beam interference model. The device response is investigated under the application of torsion, strain and temperature by measuring the phase-shift responses of three fiber interferences in the SLHI. The device application in simultaneous multi-parameter measurement is also discussed.

Citation Download Citation

Khurram Naeem, Bok Hyeon Kim, Bongkyun Kim, and Youngjoo Chung "All-fiber Sagnac loop hybrid interferometer based on a highly birefringent photonic crystal fiber with two asymmetric cores and its sensing applications", Proc. SPIE 9655, Fifth Asia-Pacific Optical Sensors Conference, 96551X (1 July 2015); https://doi.org/10.1117/12.2184255

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