Institute of Fundamental Technological Research
Polish Academy of Sciences

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George Chen

University of Southampton (GB)


Recent publications
1.  Chen G.Y., Codemard C.A., Lewis R.J., Jankowski Ł., Chan J.S., Gorman P.M, Zervas M.N., Enhanced responsivity with skew ray excitation of reflection- and transmission-type refractometric sensors, OPTICS LETTERS, ISSN: 0146-9592, DOI: 10.1364/OL.39.003822, Vol.39, No.13, pp.3822-3825, 2014

Abstract:
The responsivity of optical fibers to refractive index can be enhanced using high-order skew rays compared with using meridional rays. Skew rays can have a much higher number of reflections with increased interaction length along the core–cladding interface, which gives rise to stronger interactions with the external medium. Reflection/transmission-type refractometric sensors based on twin-coupled-core and multimode fibers showed one/two orders of magnitude increase in responsivity with skew ray excitation. The responsivity and sensitivity for the two types are ∼2000%/RIU, ∼1400%/RIU, and 4.9×10−5  RIU, 7.0×10−5  RIU, respectively.

Keywords:
Fiber optics sensors, Fiber properties, Remote sensing and sensors, Propagation, Biological sensing and sensors

Affiliations:
Chen G.Y. - University of Southampton (GB)
Codemard C.A. - Advanced Laser Laboratory SPI Lasers (GB)
Lewis R.J. - Cardiff University (GB)
Jankowski Ł. - IPPT PAN
Chan J.S. - University of Southampton (GB)
Gorman P.M - Advanced Laser Laboratory SPI Lasers (GB)
Zervas M.N. - University of Southampton (GB)

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