Liquid core fibre Bragg grating based refractive index sensor formed by femtosecond assisted chemical etching technique

P. Saffari; Z. Yan; K. Zhou; L. Zhang; I. Bennion

doi:10.1117/12.885086

18 May 2011 Liquid core fibre Bragg grating based refractive index sensor formed by femtosecond assisted chemical etching technique

P. Saffari, Z. Yan, K. Zhou, L. Zhang, I. Bennion

Author Affiliations +

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.

Citation Download Citation

P. Saffari, Z. Yan, K. Zhou, L. Zhang, and 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); https://doi.org/10.1117/12.885086

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