Refractive index sensing measurement based on periodically tapered small core singlemode fibre
Refractive index sensing measurement based on periodically tapered small core singlemode fibre
An all-fibre refractive index sensor with a simple periodical tapers configuration is proposed and investigated experimentally. The proposed fibre refractive index sensor consists of a small core singlemode fibre with tapers periodically fabricated along the fibre using a focused CO2 laser beam, and sandwiched between two standard singlemode fibres. Such a structure can be used for sensing of refractive index by measuring the dip wavelength shift of the multimode interference within the small core fibre cladding. A minimum sensitivity of 125 nm/RIU is measured for a refractive index of 1.33 and a maximum sensitivity of 383 nm/RIU for a refractive index of 1.38. The proposed refractive index sensor benefits from simplicity and low-cost and achieves a competitive sensitivity compared with other fibre-optic sensors.
Wang, Pengfei
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Brambilla, G.
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Ding, M.
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Bo, L.
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Semenova, Y.
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Wu, Q.
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Farrell, G.
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Wang, Pengfei
a1ba240f-d4f0-4150-bcd8-cb418e841dcb
Brambilla, G.
815d9712-62c7-47d1-8860-9451a363a6c8
Ding, M.
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Bo, L.
bc436773-eba1-438a-892d-c92f389967b9
Semenova, Y.
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Wu, Q.
a013aa15-2165-47d6-bbe2-f83ae858e275
Farrell, G.
09f74789-4377-4964-a6da-793184ad8c13
Wang, Pengfei, Brambilla, G., Ding, M., Bo, L., Semenova, Y., Wu, Q. and Farrell, G.
(2012)
Refractive index sensing measurement based on periodically tapered small core singlemode fibre.
Optical Fiber Sensors Conference (OFS-22), , Beijing, China.
15 - 19 Oct 2012.
Record type:
Conference or Workshop Item
(Paper)
Abstract
An all-fibre refractive index sensor with a simple periodical tapers configuration is proposed and investigated experimentally. The proposed fibre refractive index sensor consists of a small core singlemode fibre with tapers periodically fabricated along the fibre using a focused CO2 laser beam, and sandwiched between two standard singlemode fibres. Such a structure can be used for sensing of refractive index by measuring the dip wavelength shift of the multimode interference within the small core fibre cladding. A minimum sensitivity of 125 nm/RIU is measured for a refractive index of 1.33 and a maximum sensitivity of 383 nm/RIU for a refractive index of 1.38. The proposed refractive index sensor benefits from simplicity and low-cost and achieves a competitive sensitivity compared with other fibre-optic sensors.
More information
e-pub ahead of print date: October 2012
Venue - Dates:
Optical Fiber Sensors Conference (OFS-22), , Beijing, China, 2012-10-15 - 2012-10-19
Organisations:
Optoelectronics Research Centre
Identifiers
Local EPrints ID: 368413
URI: http://eprints.soton.ac.uk/id/eprint/368413
PURE UUID: fe6ff8e2-f8b2-46ad-a2bd-eb49e16625c4
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Date deposited: 18 Sep 2014 11:17
Last modified: 15 Mar 2024 03:10
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Contributors
Author:
Pengfei Wang
Author:
M. Ding
Author:
L. Bo
Author:
Y. Semenova
Author:
Q. Wu
Author:
G. Farrell
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