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A fiber tip refractive index sensor using FIB-milled gold-coated singlemode-multimode-singlemode structure

A fiber tip refractive index sensor using FIB-milled gold-coated singlemode-multimode-singlemode structure
A fiber tip refractive index sensor using FIB-milled gold-coated singlemode-multimode-singlemode structure
A compact fiber tip refractive index sensor using FIB-milled gold-coated singlemode-multimode-singlemode structure is demonstrated. Focused ion beam (FIB) is exploited to cut the fiber tip to obtain a flat end-face and then a layer of gold is coated on the tip surface, to increase its reflection. An average sensitivity of 265 nm/RIU is obtained experimentally with a ~2.94 µm diameter singlemode-multimode-singlemode fiber tip (SMST). Because of several advantages, including compactness, ease of fabrication, linear response, high sensitivity, easy connection with other fiberized optical components and low cost, this refractive index sensor could find various applications in chemical and biological area.
Ding, M.
441129e5-757f-4502-abb7-07fc24b86005
Wang, Pengfei
a1ba240f-d4f0-4150-bcd8-cb418e841dcb
Wang, Junlong
ed26f96b-c48d-4521-aa21-3727abd8db63
Yuan, H.
ea9cd4ef-c955-462a-8c04-d6323a1fea68
Brambilla, G.
815d9712-62c7-47d1-8860-9451a363a6c8
Ding, M.
441129e5-757f-4502-abb7-07fc24b86005
Wang, Pengfei
a1ba240f-d4f0-4150-bcd8-cb418e841dcb
Wang, Junlong
ed26f96b-c48d-4521-aa21-3727abd8db63
Yuan, H.
ea9cd4ef-c955-462a-8c04-d6323a1fea68
Brambilla, G.
815d9712-62c7-47d1-8860-9451a363a6c8

Ding, M., Wang, Pengfei, Wang, Junlong, Yuan, H. and Brambilla, G. (2014) A fiber tip refractive index sensor using FIB-milled gold-coated singlemode-multimode-singlemode structure. 23rd International Conference on Optical Fiber Sensors (OFS), , Santander, Spain. 01 - 05 Jun 2014. 4 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

A compact fiber tip refractive index sensor using FIB-milled gold-coated singlemode-multimode-singlemode structure is demonstrated. Focused ion beam (FIB) is exploited to cut the fiber tip to obtain a flat end-face and then a layer of gold is coated on the tip surface, to increase its reflection. An average sensitivity of 265 nm/RIU is obtained experimentally with a ~2.94 µm diameter singlemode-multimode-singlemode fiber tip (SMST). Because of several advantages, including compactness, ease of fabrication, linear response, high sensitivity, easy connection with other fiberized optical components and low cost, this refractive index sensor could find various applications in chemical and biological area.

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e-pub ahead of print date: 2014
Venue - Dates: 23rd International Conference on Optical Fiber Sensors (OFS), , Santander, Spain, 2014-06-01 - 2014-06-05
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 365893
URI: http://eprints.soton.ac.uk/id/eprint/365893
PURE UUID: 11143b20-0f15-48e9-85d6-b65581e6c61f
ORCID for G. Brambilla: ORCID iD orcid.org/0000-0002-5730-0499

Catalogue record

Date deposited: 23 Jun 2014 11:53
Last modified: 02 Apr 2022 01:38

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Contributors

Author: M. Ding
Author: Pengfei Wang
Author: Junlong Wang
Author: H. Yuan
Author: G. Brambilla ORCID iD

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