Tapered photonic crystal fiber interferometer with enhanced sensitivity

Sun-jie Qiu; Ye Chen; Jun-long Kou; Fei Xu; Yan-qing Lu

doi:10.1117/12.903958

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29 November 2011 Tapered photonic crystal fiber interferometer with enhanced sensitivity

Sun-jie Qiu, Ye Chen, Jun-long Kou, Fei Xu, Yan-qing Lu

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Proceedings Volume 8307, Passive Components and Fiber-Based Devices VIII; 83071I (2011) https://doi.org/10.1117/12.903958
Event: SPIE/OSA/IEEE Asia Communications and Photonics, 2011, Shanghai, China

Abstract

We fabricate a miniature tapered photonic crystal fiber (PCF) interferometer with enhanced sensitivity by a new acid microdroplets etching method. This method, without elongating the PCF, moving and re-fixing the device during etching and measuring refractive index sensitivity, is very simple, cost-efficient and highly stable over time. We investigate the refractive index sensing properties with different PCF diameters both theoretically and experimentally. The size decreases and the sensitivity increases an order of magnitude after etching the PCF. If we can optimize the etching process, we can fabricate more uniformly and thinly tapered PCF interferometer with higher sensitivity (~ 100 times) theoretically in the future.

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Sun-jie Qiu, Ye Chen, Jun-long Kou, Fei Xu, and Yan-qing Lu "Tapered photonic crystal fiber interferometer with enhanced sensitivity", Proc. SPIE 8307, Passive Components and Fiber-Based Devices VIII, 83071I (29 November 2011); https://doi.org/10.1117/12.903958

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