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Birefringent Bragg grating in C-shaped optical fiber as a temperature-insensitive refractometer

Birefringent Bragg grating in C-shaped optical fiber as a temperature-insensitive refractometer
Birefringent Bragg grating in C-shaped optical fiber as a temperature-insensitive refractometer

We demonstrate a simple-to-fabricate refractometer based on the inscription of fiber Bragg gratings in a special C-shaped optical fiber. The C-shaped fiber was drawn into shape using a quarter cladding removed preform of a commercial standard single-mode fiber by simple machining. The sensor did not suffer from cross-sensitivity of the refractive index with ambient temperature fluctuations, commonly occurring with many optical fiber refractometers. A refractive index sensitivity of 1300 pm per refractive index unit (RIU) was achieved without employing any additional sensitization techniques such as tapering or etching.

fiber Bragg gratings, fiber sensors, refractometers, specialty fibers
1424-8220
1-10
Tan, Rex Xiao
b1b8f8e5-3a4d-431e-9d8b-9f8824d821a6
Ho, Daryl
15f30d4f-fd15-48b4-a1df-f91ac5af82b9
Tse, Chun Ho
4c0a0057-9fa0-4b50-bdd8-6567650fb9fe
Tan, Yung Chuen
8b616041-781f-497d-bcf7-3b9217a333b1
Yoo, Seong Woo
50e806a0-385e-4487-bfea-27edbba45e68
Tjin, Swee Chuan
507fa0fe-4697-4799-abe4-740a97ca5056
Ibsen, Morten
22e58138-5ce9-4bed-87e1-735c91f8f3b9
Tan, Rex Xiao
b1b8f8e5-3a4d-431e-9d8b-9f8824d821a6
Ho, Daryl
15f30d4f-fd15-48b4-a1df-f91ac5af82b9
Tse, Chun Ho
4c0a0057-9fa0-4b50-bdd8-6567650fb9fe
Tan, Yung Chuen
8b616041-781f-497d-bcf7-3b9217a333b1
Yoo, Seong Woo
50e806a0-385e-4487-bfea-27edbba45e68
Tjin, Swee Chuan
507fa0fe-4697-4799-abe4-740a97ca5056
Ibsen, Morten
22e58138-5ce9-4bed-87e1-735c91f8f3b9

Tan, Rex Xiao, Ho, Daryl, Tse, Chun Ho, Tan, Yung Chuen, Yoo, Seong Woo, Tjin, Swee Chuan and Ibsen, Morten (2018) Birefringent Bragg grating in C-shaped optical fiber as a temperature-insensitive refractometer. Sensors, 18 (10), 1-10. (doi:10.3390/s18103285).

Record type: Article

Abstract

We demonstrate a simple-to-fabricate refractometer based on the inscription of fiber Bragg gratings in a special C-shaped optical fiber. The C-shaped fiber was drawn into shape using a quarter cladding removed preform of a commercial standard single-mode fiber by simple machining. The sensor did not suffer from cross-sensitivity of the refractive index with ambient temperature fluctuations, commonly occurring with many optical fiber refractometers. A refractive index sensitivity of 1300 pm per refractive index unit (RIU) was achieved without employing any additional sensitization techniques such as tapering or etching.

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More information

Accepted/In Press date: 27 September 2018
e-pub ahead of print date: 29 September 2018
Keywords: fiber Bragg gratings, fiber sensors, refractometers, specialty fibers

Identifiers

Local EPrints ID: 425154
URI: https://eprints.soton.ac.uk/id/eprint/425154
ISSN: 1424-8220
PURE UUID: 68966b83-135f-4117-8026-415a9921a04d

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Date deposited: 11 Oct 2018 16:30
Last modified: 02 Dec 2019 17:54

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Contributors

Author: Rex Xiao Tan
Author: Daryl Ho
Author: Chun Ho Tse
Author: Yung Chuen Tan
Author: Seong Woo Yoo
Author: Swee Chuan Tjin
Author: Morten Ibsen

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