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Long period grating inscribed in multimode fibre interferometer and its application in refractive index sensing

Long period grating inscribed in multimode fibre interferometer and its application in refractive index sensing
Long period grating inscribed in multimode fibre interferometer and its application in refractive index sensing
A long period grating (LPG) is inscribed by a femtosecond laser in the multimode region of a singlemode-multimode-singlemode fibre device to provide a compact refractive index sensor. An average sensitivity of 39 nm/RIU and a resolvable index change of 2.56×10-4 are obtained experimentally with a 44.4 mm long multimode fibre over a measured refractive index range of 1.33-1.35. Because of its compactness, ease of fabrication, linear response, high sensitivity, easy connectivity to other fiberized optical components and low cost, this refractometer could find various applications in chemical and biological sensing.
Wang, Pengfei
a1ba240f-d4f0-4150-bcd8-cb418e841dcb
Zhao, Haoyu
39c8550b-f02b-4964-9487-b38c91894ab2
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8
Farrell, Gerald
6c4b8f27-d88c-41a2-87ff-f2466225798f
Yuan, Libo
0e48503a-1d82-44a0-9ca9-7b90f74097a3
Wang, Pengfei
a1ba240f-d4f0-4150-bcd8-cb418e841dcb
Zhao, Haoyu
39c8550b-f02b-4964-9487-b38c91894ab2
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8
Farrell, Gerald
6c4b8f27-d88c-41a2-87ff-f2466225798f
Yuan, Libo
0e48503a-1d82-44a0-9ca9-7b90f74097a3

Wang, Pengfei, Zhao, Haoyu, Brambilla, Gilberto, Farrell, Gerald and Yuan, Libo (2015) Long period grating inscribed in multimode fibre interferometer and its application in refractive index sensing. 24th International Conference on Conference on Optical Fibre Sensors, Brazil. 28 Sep 2015. (doi:10.1117/12.2191126).

Record type: Conference or Workshop Item (Paper)

Abstract

A long period grating (LPG) is inscribed by a femtosecond laser in the multimode region of a singlemode-multimode-singlemode fibre device to provide a compact refractive index sensor. An average sensitivity of 39 nm/RIU and a resolvable index change of 2.56×10-4 are obtained experimentally with a 44.4 mm long multimode fibre over a measured refractive index range of 1.33-1.35. Because of its compactness, ease of fabrication, linear response, high sensitivity, easy connectivity to other fiberized optical components and low cost, this refractometer could find various applications in chemical and biological sensing.

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Published date: 28 September 2015
Venue - Dates: 24th International Conference on Conference on Optical Fibre Sensors, Brazil, 2015-09-28 - 2015-09-28
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 385225
URI: https://eprints.soton.ac.uk/id/eprint/385225
PURE UUID: 5bb3bc1b-9609-4532-b40a-c78101b23284

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Date deposited: 12 Jan 2016 12:37
Last modified: 30 Sep 2019 18:44

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