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Proceedings Paper

Phase sensitivity of hollow-core photonic bandgap fiber to internal gas pressure
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Paper Abstract

Phase sensitivity of the fundamental mode of hollow-core photonic bandgap fiber to gas pressure applied internally to its core is investigated. The measured phase sensitivity for a 95-cm-long fiber is 9.92 rad/kPa, over two orders of magnitude higher than that to external pressure. The large phase sensitivity is attributed mainly to the pressure-induced refractive index change of air inside the fiber core. Such an effect may be exploited for high sensitivity pressure sensing and biochemical and environmental process analysis involving pressure variations.

Paper Details

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91577M (2 June 2014); doi: 10.1117/12.2059018
Show Author Affiliations
Yingchun Cao, The Hong Kong Polytechnic Univ. (Hong Kong, China)
Fan Yang, The Hong Kong Polytechnic Univ. (Hong Kong, China)
Hoi Lut Ho, The Hong Kong Polytechnic Univ. (Hong Kong, China)
Wei Jin, The Hong Kong Polytechnic Univ. (Hong Kong, China)


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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