Sensitivity enhancement in photonic crystal fiber interferometer

Sun-jie Qiu; Ye Chen

doi:10.1117/12.968583

7 November 2012 Sensitivity enhancement in photonic crystal fiber interferometer

Sun-jie Qiu, Ye Chen

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84216V (2012) https://doi.org/10.1117/12.968583
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

In this paper, we demonstrated two methods to enhance refractive index (RI) and temperature sensitivity of a photonic crystal fiber (PCF) in-line modal interferometer built via fusion splicing, respectively. First we fabricated a tapered PCF interferometer by an etching method with acid microdroplets. The RI sensitivity greatly increases (5 times) and the size decreases after tapering the PCF, while the temperature sensitivity does not change a lot. Then we obtained another PCF interferometer by inserting a short isopropanol-filled PCF between two single mode fibers (SMFs). The temperature sensitivity increases over an order of magnitude compared with the previous non-polarimetric sensors based on air-filled PCF interferometers.

Citation Download Citation

Sun-jie Qiu and Ye Chen "Sensitivity enhancement in photonic crystal fiber interferometer", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84216V (7 November 2012); https://doi.org/10.1117/12.968583

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