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Proceedings Paper

Optimization and characterization of femtosecond laser inscribed in-fiber microchannels for liquid sensing
Author(s): Graham C. B. Lee; Chengbo Mou; Kaiming Zhou; Kate Sugden
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Paper Abstract

In-fiber microchannels were fabricated directly in standard single mode fiber using the femtosecond laser inscribe and etch technique. This method of creating in-fiber microchannels offers great versatility since it allows complex three dimensional structures to be inscribed and then etched with hydrofluoric acid. Four in-fiber microchannel designs were experimentally investigated using this technique. Device characteristics were evaluated through monitoring the spectral change while inserting index matching oils into each microchannel - a R.I. sensitivity up to 1.55 dB/RIU was achieved. Furthermore, a simple Fabry-Pérot based refractometer with a R.I. sensitivity of 2.75 nm/RIU was also demonstrated.

Paper Details

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 915743 (2 June 2014); doi: 10.1117/12.2058315
Show Author Affiliations
Graham C. B. Lee, Aston Univ. (United Kingdom)
Chengbo Mou, Aston Univ. (United Kingdom)
Kaiming Zhou, Aston Univ. (United Kingdom)
Kate Sugden, Aston Univ. (United Kingdom)


Published in SPIE Proceedings Vol. 9157:
23rd International Conference on Optical Fibre Sensors
José M. López-Higuera; Julian D. C. Jones; Manuel López-Amo; José Luis Santos, Editor(s)

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