Graphene-based D-shaped fiber multicore mode interferometer for chemical gas sensing

Y. Wu; B. C. Yao; A. Q. Zhang; X. L. Cao; Z. G. Wang; Y. J. Rao; Y. Gong; W. Zhang; Y. F. Chen; K. S. Chiang

doi:10.1364/OL.39.006030

Graphene-based D-shaped fiber multicore mode interferometer for chemical gas sensing

Y. Wu
, B. C. Yao
, A. Q. Zhang
, X. L. Cao
, Z. G. Wang
, Y. J. Rao
, Y. Gong
, W. Zhang
, Y. F. Chen
, K. S. Chiang

Department of Electrical Engineering

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

53 Citations (Scopus)

Abstract

In this Letter, a graphene-coated D-shaped fiber (GDF) chemical gas sensor is proposed and demonstrated. Taking advantage of both the graphene-induced evanescent field enhancement and the in-fiber multimode interferometer, the GDF shows very high sensitivity for polar gas molecule adsorptions. An extinction ratio of up to 28 dB within the free spectrum range of ∼30 nm in the transmission spectrum is achieved. The maximum sensitivities for NH₃ and H₂O gas detections are ∼0.04 and ∼0.1 ppm, respectively. A hybrid sensing scheme with such compactness, high sensitivity, and online monitoring capabilities may pave the way for others to explore a series of graphene-based lab-on-fiber devices for biochemical sensing.

Original language	English
Pages (from-to)	6030-6033
Journal	Optics Letters
Volume	39
Issue number	20
Online published	15 Oct 2014
DOIs	https://doi.org/10.1364/OL.39.006030
Publication status	Published - 15 Oct 2014

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title = "Graphene-based D-shaped fiber multicore mode interferometer for chemical gas sensing",

abstract = "In this Letter, a graphene-coated D-shaped fiber (GDF) chemical gas sensor is proposed and demonstrated. Taking advantage of both the graphene-induced evanescent field enhancement and the in-fiber multimode interferometer, the GDF shows very high sensitivity for polar gas molecule adsorptions. An extinction ratio of up to 28 dB within the free spectrum range of ∼30 nm in the transmission spectrum is achieved. The maximum sensitivities for NH3 and H2O gas detections are ∼0.04 and ∼0.1 ppm, respectively. A hybrid sensing scheme with such compactness, high sensitivity, and online monitoring capabilities may pave the way for others to explore a series of graphene-based lab-on-fiber devices for biochemical sensing.",

author = "Y. Wu and Yao, \{B. C.\} and Zhang, \{A. Q.\} and Cao, \{X. L.\} and Wang, \{Z. G.\} and Rao, \{Y. J.\} and Y. Gong and W. Zhang and Chen, \{Y. F.\} and Chiang, \{K. S.\}",

year = "2014",

month = oct,

day = "15",

doi = "10.1364/OL.39.006030",

language = "English",

volume = "39",

pages = "6030--6033",

journal = "Optics Letters",

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TY - JOUR

T1 - Graphene-based D-shaped fiber multicore mode interferometer for chemical gas sensing

AU - Wu, Y.

AU - Yao, B. C.

AU - Zhang, A. Q.

AU - Cao, X. L.

AU - Wang, Z. G.

AU - Rao, Y. J.

AU - Gong, Y.

AU - Zhang, W.

AU - Chen, Y. F.

AU - Chiang, K. S.

PY - 2014/10/15

Y1 - 2014/10/15

N2 - In this Letter, a graphene-coated D-shaped fiber (GDF) chemical gas sensor is proposed and demonstrated. Taking advantage of both the graphene-induced evanescent field enhancement and the in-fiber multimode interferometer, the GDF shows very high sensitivity for polar gas molecule adsorptions. An extinction ratio of up to 28 dB within the free spectrum range of ∼30 nm in the transmission spectrum is achieved. The maximum sensitivities for NH3 and H2O gas detections are ∼0.04 and ∼0.1 ppm, respectively. A hybrid sensing scheme with such compactness, high sensitivity, and online monitoring capabilities may pave the way for others to explore a series of graphene-based lab-on-fiber devices for biochemical sensing.

AB - In this Letter, a graphene-coated D-shaped fiber (GDF) chemical gas sensor is proposed and demonstrated. Taking advantage of both the graphene-induced evanescent field enhancement and the in-fiber multimode interferometer, the GDF shows very high sensitivity for polar gas molecule adsorptions. An extinction ratio of up to 28 dB within the free spectrum range of ∼30 nm in the transmission spectrum is achieved. The maximum sensitivities for NH3 and H2O gas detections are ∼0.04 and ∼0.1 ppm, respectively. A hybrid sensing scheme with such compactness, high sensitivity, and online monitoring capabilities may pave the way for others to explore a series of graphene-based lab-on-fiber devices for biochemical sensing.

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UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84908108250&origin=recordpage

U2 - 10.1364/OL.39.006030

DO - 10.1364/OL.39.006030

M3 - RGC 21 - Publication in refereed journal

SN - 0146-9592

VL - 39

SP - 6030

EP - 6033

JO - Optics Letters

JF - Optics Letters

IS - 20

ER -

Graphene-based D-shaped fiber multicore mode interferometer for chemical gas sensing

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