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Proceedings Paper

Optical fibre cavity ring down measurement of refractive index with a microchannel drilled by femtosecond laser
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Paper Abstract

μA microchannel was inscribed in the fibre of a ring cavity which was constructed from two 0.1%:99.9% couplers and a 10m fibre loop. Cavity ring down spectroscopy (CRDS) was used to measure the refractive index (RI) of gels infused into the microchannel with high resolution. The ring down time discloses a nonlinear increase with respect to the RI of the gel and sensitivity up to 300μs/RI unit (RIU) and resolution of 5×10-4 were obtained.

Paper Details

Date Published: 5 October 2009
PDF: 4 pages
Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75035Y (5 October 2009); doi: 10.1117/12.835167
Show Author Affiliations
Kaiming Zhou, Aston Univ. (United Kingdom)
David Webb, Aston Univ. (United Kingdom)
Chengbo Mou, Aston Univ. (United Kingdom)
Mark Farries, Gooch & Housego Torquay Ltd (United Kingdom)
Neil Hayes, EvanesCo Ltd (United Kingdom)
Ian Bennion, Aston Univ. (United Kingdom)


Published in SPIE Proceedings Vol. 7503:
20th International Conference on Optical Fibre Sensors
Julian D. C. Jones, Editor(s)

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