18 May 2011 Liquid core fibre Bragg grating based refractive index sensor formed by femtosecond assisted chemical etching technique
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Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 77538P (2011) https://doi.org/10.1117/12.885086
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada
Abstract
We report the fabrication of a refractive index (RI) sensor based on a liquid core fibre Bragg grating (FBG). A micro-slot FBG was created in standard telecom optical fibre employing the tightly focused femtosecond laser inscription aided chemical etching. A micro-slot with dimensions of 5.74(h) × 125(w) × 1388.72(l) μm was engraved across the whole fibre and along 1mm long FBG which gives advantage of a relatively robust liquid core waveguide. The device performed the refractive index sensitivity up to about 742.72 nm/RIU.
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P. Saffari, P. Saffari, Z. Yan, Z. Yan, K. Zhou, K. Zhou, L. Zhang, L. Zhang, I. Bennion, I. Bennion, } "Liquid core fibre Bragg grating based refractive index sensor formed by femtosecond assisted chemical etching technique", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77538P (18 May 2011); doi: 10.1117/12.885086; https://doi.org/10.1117/12.885086
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