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Fiber optic surface plasmon resonance sensor with a Bragg grating

Fiber optic surface plasmon resonance sensor with a Bragg grating
Fiber optic surface plasmon resonance sensor with a Bragg grating
We report a new optical sensor based on excitation of a surface plasmon (SP) in an optical fiber Bragg grating (FBG) structure. The sensing device consists of a side-polished single-mode optical fiber with a Bragg grating written into a fiber core and a thin gold overlayer supporting SP. If a coupling between a guided mode of the optical fiber and a SP mode is established, any change in the refractive index of analyte affects propagation constant of the fiber mode producing a change in the amount of light reflected by the FBG. A laboratory prototype of the sensor has been developed and its potential for refractometry has been examined. It has been demonstrated that the sensor's sensitivity to refractive index is as high as 750 dB/RIU (Refractive Index Unit).
0277-786X
154-158
Slavík, Radan
2591726a-ecc0-4d1a-8e1d-4d0fd8da8f7d
Čtyroký, J.
1a8cfc78-d014-48d6-a2b5-b9764f7a859a
Homola, Jiri
9ae778bd-5e0d-4e3c-9597-17409470a575
Slavík, Radan
2591726a-ecc0-4d1a-8e1d-4d0fd8da8f7d
Čtyroký, J.
1a8cfc78-d014-48d6-a2b5-b9764f7a859a
Homola, Jiri
9ae778bd-5e0d-4e3c-9597-17409470a575

Slavík, Radan, Čtyroký, J. and Homola, Jiri (2000) Fiber optic surface plasmon resonance sensor with a Bragg grating. In Proceedings of SPIE - The International Society for Optical Engineering. vol. 4016, pp. 154-158 .

Record type: Conference or Workshop Item (Paper)

Abstract

We report a new optical sensor based on excitation of a surface plasmon (SP) in an optical fiber Bragg grating (FBG) structure. The sensing device consists of a side-polished single-mode optical fiber with a Bragg grating written into a fiber core and a thin gold overlayer supporting SP. If a coupling between a guided mode of the optical fiber and a SP mode is established, any change in the refractive index of analyte affects propagation constant of the fiber mode producing a change in the amount of light reflected by the FBG. A laboratory prototype of the sensor has been developed and its potential for refractometry has been examined. It has been demonstrated that the sensor's sensitivity to refractive index is as high as 750 dB/RIU (Refractive Index Unit).

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More information

Published date: 2000
Additional Information: Copyright: Copyright 2004 Elsevier Science B.V., Amsterdam. All rights reserved.
Venue - Dates: 3rd Conference on Photonics, Devices, and Systems (PHOTONICS PRAGUE '99), , Prague, Czech Republic, 1999-06-21 - 1999-06-23

Identifiers

Local EPrints ID: 468184
URI: http://eprints.soton.ac.uk/id/eprint/468184
ISSN: 0277-786X
PURE UUID: 696f4c3d-6069-4356-a50c-93b98d212e1f
ORCID for Radan Slavík: ORCID iD orcid.org/0000-0002-9336-4262

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Date deposited: 04 Aug 2022 16:45
Last modified: 07 Feb 2023 02:51

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Contributors

Author: Radan Slavík ORCID iD
Author: J. Čtyroký
Author: Jiri Homola

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