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Photonic crystal fiber half-taper probe based refractometer

Photonic crystal fiber half-taper probe based refractometer
Photonic crystal fiber half-taper probe based refractometer
A compact singlemode - photonic crystal fiber - singlemode fiber tip (SPST) refractive index sensor is demonstrated in this paper. A CO2 laser cleaving technique is utilised to provide a clean-cut fiber tip which is then coated by a layer of gold to increase reflection. An average sensitivity of 39.1 nm/RIU and a resolvable index change of 2.56 x 10-4 are obtained experimentally with a ~3.2 µm diameter SPST. The temperature dependence of this fiber optic sensor probe is presented. The proposed SPST refractometer is also significantly less sensitive to temperature and an experimental demonstration of this reduced sensitivity is presented in the paper. Because of its compactness, ease of fabrication, linear response, low temperature dependency, easy connectivity to other fiberized optical components and low cost, this refractometer could find various applications in chemical and biological sensing.
0146-9592
2076-2079
Wang, Pengfei
a1ba240f-d4f0-4150-bcd8-cb418e841dcb
Ding, Ming
e9c86fb2-c1f5-4720-be85-0b56b8f75b3a
Bo, Lin
cffc25e8-2256-4f08-ada8-a1386c326810
Guan, Chunying
a2d5b5f2-bd7c-4968-8f70-8c0ffdb09948
Semenova, Yuliya
6e64157c-40b6-4eb5-938c-ae2dd348f652
Sun, Weimin
c442ab0d-7203-4962-a3ff-c12bc421c3e2
Yuan, Libo
0e48503a-1d82-44a0-9ca9-7b90f74097a3
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8
Farrell, Gerald
6c4b8f27-d88c-41a2-87ff-f2466225798f
Wang, Pengfei
a1ba240f-d4f0-4150-bcd8-cb418e841dcb
Ding, Ming
e9c86fb2-c1f5-4720-be85-0b56b8f75b3a
Bo, Lin
cffc25e8-2256-4f08-ada8-a1386c326810
Guan, Chunying
a2d5b5f2-bd7c-4968-8f70-8c0ffdb09948
Semenova, Yuliya
6e64157c-40b6-4eb5-938c-ae2dd348f652
Sun, Weimin
c442ab0d-7203-4962-a3ff-c12bc421c3e2
Yuan, Libo
0e48503a-1d82-44a0-9ca9-7b90f74097a3
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8
Farrell, Gerald
6c4b8f27-d88c-41a2-87ff-f2466225798f

Wang, Pengfei, Ding, Ming, Bo, Lin, Guan, Chunying, Semenova, Yuliya, Sun, Weimin, Yuan, Libo, Brambilla, Gilberto and Farrell, Gerald (2014) Photonic crystal fiber half-taper probe based refractometer. Optics Letters, 39 (7), 2076-2079. (doi:10.1364/OL.39.002076).

Record type: Article

Abstract

A compact singlemode - photonic crystal fiber - singlemode fiber tip (SPST) refractive index sensor is demonstrated in this paper. A CO2 laser cleaving technique is utilised to provide a clean-cut fiber tip which is then coated by a layer of gold to increase reflection. An average sensitivity of 39.1 nm/RIU and a resolvable index change of 2.56 x 10-4 are obtained experimentally with a ~3.2 µm diameter SPST. The temperature dependence of this fiber optic sensor probe is presented. The proposed SPST refractometer is also significantly less sensitive to temperature and an experimental demonstration of this reduced sensitivity is presented in the paper. Because of its compactness, ease of fabrication, linear response, low temperature dependency, 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: 27 March 2014
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 372181
URI: http://eprints.soton.ac.uk/id/eprint/372181
ISSN: 0146-9592
PURE UUID: b253dbcd-1a31-4fbc-a2c0-887ff80c8539
ORCID for Gilberto Brambilla: ORCID iD orcid.org/0000-0002-5730-0499

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Date deposited: 02 Dec 2014 11:58
Last modified: 02 Apr 2022 01:38

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Contributors

Author: Pengfei Wang
Author: Ming Ding
Author: Lin Bo
Author: Chunying Guan
Author: Yuliya Semenova
Author: Weimin Sun
Author: Libo Yuan
Author: Gerald Farrell

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