Response of hydrogel coated cascaded long period gratings to relative humidity

Xiujuan Yu; Min Zhang; Shengchun Liu; Yanbiao Liao; Wei Jin

doi:10.1117/12.883614

Response of hydrogel coated cascaded long period gratings to relative humidity

Xiujuan Yu, Min Zhang, Shengchun Liu, Yanbiao Liao, Wei Jin

The Hong Kong Polytechnic University

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

2 Citations (Scopus)

Abstract

The response of transmission spectrum of cascaded long period gratings with hydrogel coating to relative humidity is investigated experimentally. Two configurations in terms of coated/not coated areas of the cascaded LPGs are explored to gain a significant enhancement of RH sensitivity. For humidity level greater than 50%RH, the visibility of the interference fringes is highly sensitive to relative humidity, showing a good linearity. The sensitivities of the two proposed hydrogel coated cascaded LPGs devices are 7.71 × 10-3/%RH and 7.08 × 10-3/%RH, respectively. RH accuracies of ± 0.45% and ± 0.32% are achieved, respectively.

Original language	English
Title of host publication	21st International Conference on Optical Fiber Sensors
Volume	7753
DOIs	https://doi.org/10.1117/12.883614
Publication status	Published - 9 Jun 2011
Event	21st International Conference on Optical Fiber Sensors - Ottawa, ON, Canada Duration: 15 May 2011 → 19 May 2011

Conference

Conference	21st International Conference on Optical Fiber Sensors
Country/Territory	Canada
City	Ottawa, ON
Period	15/05/11 → 19/05/11

Keywords

cascaded long period gratings
hydrogel
optical fiber sensor
relative humidity sensor

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

More information

10.1117/12.883614

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title = "Response of hydrogel coated cascaded long period gratings to relative humidity",

abstract = "The response of transmission spectrum of cascaded long period gratings with hydrogel coating to relative humidity is investigated experimentally. Two configurations in terms of coated/not coated areas of the cascaded LPGs are explored to gain a significant enhancement of RH sensitivity. For humidity level greater than 50%RH, the visibility of the interference fringes is highly sensitive to relative humidity, showing a good linearity. The sensitivities of the two proposed hydrogel coated cascaded LPGs devices are 7.71 × 10-3/%RH and 7.08 × 10-3/%RH, respectively. RH accuracies of ± 0.45% and ± 0.32% are achieved, respectively.",

keywords = "cascaded long period gratings, hydrogel, optical fiber sensor, relative humidity sensor",

author = "Xiujuan Yu and Min Zhang and Shengchun Liu and Yanbiao Liao and Wei Jin",

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doi = "10.1117/12.883614",

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T1 - Response of hydrogel coated cascaded long period gratings to relative humidity

AU - Yu, Xiujuan

AU - Zhang, Min

AU - Liu, Shengchun

AU - Liao, Yanbiao

AU - Jin, Wei

PY - 2011/6/9

Y1 - 2011/6/9

N2 - The response of transmission spectrum of cascaded long period gratings with hydrogel coating to relative humidity is investigated experimentally. Two configurations in terms of coated/not coated areas of the cascaded LPGs are explored to gain a significant enhancement of RH sensitivity. For humidity level greater than 50%RH, the visibility of the interference fringes is highly sensitive to relative humidity, showing a good linearity. The sensitivities of the two proposed hydrogel coated cascaded LPGs devices are 7.71 × 10-3/%RH and 7.08 × 10-3/%RH, respectively. RH accuracies of ± 0.45% and ± 0.32% are achieved, respectively.

AB - The response of transmission spectrum of cascaded long period gratings with hydrogel coating to relative humidity is investigated experimentally. Two configurations in terms of coated/not coated areas of the cascaded LPGs are explored to gain a significant enhancement of RH sensitivity. For humidity level greater than 50%RH, the visibility of the interference fringes is highly sensitive to relative humidity, showing a good linearity. The sensitivities of the two proposed hydrogel coated cascaded LPGs devices are 7.71 × 10-3/%RH and 7.08 × 10-3/%RH, respectively. RH accuracies of ± 0.45% and ± 0.32% are achieved, respectively.

KW - cascaded long period gratings

KW - hydrogel

KW - optical fiber sensor

KW - relative humidity sensor

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U2 - 10.1117/12.883614

DO - 10.1117/12.883614

M3 - Conference article published in proceeding or book

SN - 9780819482464

VL - 7753

BT - 21st International Conference on Optical Fiber Sensors

T2 - 21st International Conference on Optical Fiber Sensors

Y2 - 15 May 2011 through 19 May 2011

ER -

Response of hydrogel coated cascaded long period gratings to relative humidity

Abstract

Conference

Keywords

ASJC Scopus subject areas

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