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Suspended ring-core photonic crystal fiber gas sensor with high sensitivity and fast response

Suspended ring-core photonic crystal fiber gas sensor with high sensitivity and fast response
Suspended ring-core photonic crystal fiber gas sensor with high sensitivity and fast response
We demonstrate the design and fabrication of an in-line evanescent field gas sensor based on a novel suspended ring-core photonic crystal fiber (PCF) to further overcome limitations in sensing capability. The suspended ring-core PCF is made by the stack-and-draw technique with a large central capillary of ~60µm and adapted small capillaries in a larger cladding tube. Sensing capabilities of two variations of the proposed suspended ring-core PCFs were investigated experimentally by detecting absorption lines of acetylene gas. The sensitivity of the two PCF structures was also numerically analyzed using a full-vectorial finite-element method. The dynamic response of the sensors was quantified in detail. The results demonstrated significant improvement in both sensitivity and response time of the suspended ring-core PCF as this special PCF can provide larger gas diffusion and higher overlap between the sensing species and the guided light than either a Ge-doped ring defect PCF or a conventional index-guided PCF.
sensors, fiber optics systems, photonic crystal fiber
1943-0655
1-9
Kassani, Sahar Hosseinzadeh
1d946041-5f88-4509-a7f8-2382eb1ce390
Khazaeinezhad, Reza
42b87d5f-d037-4b3a-8d98-22827f9d7ab0
Jung, Yongmin
6685e51e-be47-4c96-8c4b-65aee3b5126d
Kobelke, Jens
5d374399-46c9-4c25-910e-343da26ed869
Oh, Kyunghwan
b4a576b7-fc35-4c55-aa2a-50b3f3260d1b
Kassani, Sahar Hosseinzadeh
1d946041-5f88-4509-a7f8-2382eb1ce390
Khazaeinezhad, Reza
42b87d5f-d037-4b3a-8d98-22827f9d7ab0
Jung, Yongmin
6685e51e-be47-4c96-8c4b-65aee3b5126d
Kobelke, Jens
5d374399-46c9-4c25-910e-343da26ed869
Oh, Kyunghwan
b4a576b7-fc35-4c55-aa2a-50b3f3260d1b

Kassani, Sahar Hosseinzadeh, Khazaeinezhad, Reza, Jung, Yongmin, Kobelke, Jens and Oh, Kyunghwan (2015) Suspended ring-core photonic crystal fiber gas sensor with high sensitivity and fast response. IEEE Photonics Journal, 7 (1), 1-9. (doi:10.1109/JPHOT.2015.2396121).

Record type: Article

Abstract

We demonstrate the design and fabrication of an in-line evanescent field gas sensor based on a novel suspended ring-core photonic crystal fiber (PCF) to further overcome limitations in sensing capability. The suspended ring-core PCF is made by the stack-and-draw technique with a large central capillary of ~60µm and adapted small capillaries in a larger cladding tube. Sensing capabilities of two variations of the proposed suspended ring-core PCFs were investigated experimentally by detecting absorption lines of acetylene gas. The sensitivity of the two PCF structures was also numerically analyzed using a full-vectorial finite-element method. The dynamic response of the sensors was quantified in detail. The results demonstrated significant improvement in both sensitivity and response time of the suspended ring-core PCF as this special PCF can provide larger gas diffusion and higher overlap between the sensing species and the guided light than either a Ge-doped ring defect PCF or a conventional index-guided PCF.

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More information

Accepted/In Press date: 19 January 2015
Published date: February 2015
Keywords: sensors, fiber optics systems, photonic crystal fiber
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 375795
URI: https://eprints.soton.ac.uk/id/eprint/375795
ISSN: 1943-0655
PURE UUID: 1712f851-b0d6-404e-9def-601f3694bc16

Catalogue record

Date deposited: 14 Apr 2015 13:11
Last modified: 27 Nov 2018 17:31

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