Hydrogel based Fabry-Pérot cavity for a pH sensor

Abdullah Al Noman; Jitendra Narayan Dash; Xin Cheng; Chern Yang Leong; Hwa Yaw Tam; Changyuan Yu

doi:10.1364/OE.414636

Hydrogel based Fabry-Pérot cavity for a pH sensor

Abdullah Al Noman
, Jitendra Narayan Dash
, Xin Cheng
, Chern Yang Leong
, Hwa Yaw Tam
, Changyuan Yu

Research output: Contribution to journal › Article › peer-review

Abstract

A simple, reliable, and quick reactive Fabry-Pérot (FP) structure-based fiber optic pH sensor is presented. The pH-sensitive hydrogel and single-mode fiber (SMF) are placed inside a fused silica capillary to form the FP cavity. The gel thickness is characterized by the spin coating method with respect to different spin speeds. The proposed sensor shows a pH sensitivity of 0.30 nm/pH along with a fast response time of 15 s to 20 s for different pH solvents in the acidic range. Also, the temperature sensitivity of the FPI sensor is found to be -0.56 nm/°C.

Original language	English
Pages (from-to)	39648
Number of pages	1
Journal	Optics Express
Volume	28
Issue number	26
DOIs	https://doi.org/10.1364/OE.414636
Publication status	Published - 21 Dec 2020
Externally published	Yes

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title = "Hydrogel based Fabry-P{\'e}rot cavity for a pH sensor",

abstract = "A simple, reliable, and quick reactive Fabry-P{\'e}rot (FP) structure-based fiber optic pH sensor is presented. The pH-sensitive hydrogel and single-mode fiber (SMF) are placed inside a fused silica capillary to form the FP cavity. The gel thickness is characterized by the spin coating method with respect to different spin speeds. The proposed sensor shows a pH sensitivity of 0.30 nm/pH along with a fast response time of 15 s to 20 s for different pH solvents in the acidic range. Also, the temperature sensitivity of the FPI sensor is found to be -0.56 nm/°C.",

author = "Noman, \{Abdullah Al\} and Dash, \{Jitendra Narayan\} and Xin Cheng and Leong, \{Chern Yang\} and Tam, \{Hwa Yaw\} and Changyuan Yu",

note = "Publisher Copyright: {\textcopyright} 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement",

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doi = "10.1364/OE.414636",

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AU - Noman, Abdullah Al

AU - Dash, Jitendra Narayan

AU - Cheng, Xin

AU - Leong, Chern Yang

AU - Tam, Hwa Yaw

AU - Yu, Changyuan

PY - 2020/12/21

Y1 - 2020/12/21

N2 - A simple, reliable, and quick reactive Fabry-Pérot (FP) structure-based fiber optic pH sensor is presented. The pH-sensitive hydrogel and single-mode fiber (SMF) are placed inside a fused silica capillary to form the FP cavity. The gel thickness is characterized by the spin coating method with respect to different spin speeds. The proposed sensor shows a pH sensitivity of 0.30 nm/pH along with a fast response time of 15 s to 20 s for different pH solvents in the acidic range. Also, the temperature sensitivity of the FPI sensor is found to be -0.56 nm/°C.

AB - A simple, reliable, and quick reactive Fabry-Pérot (FP) structure-based fiber optic pH sensor is presented. The pH-sensitive hydrogel and single-mode fiber (SMF) are placed inside a fused silica capillary to form the FP cavity. The gel thickness is characterized by the spin coating method with respect to different spin speeds. The proposed sensor shows a pH sensitivity of 0.30 nm/pH along with a fast response time of 15 s to 20 s for different pH solvents in the acidic range. Also, the temperature sensitivity of the FPI sensor is found to be -0.56 nm/°C.

UR - https://www.scopus.com/pages/publications/85097623230

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DO - 10.1364/OE.414636

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SN - 1094-4087

VL - 28

SP - 39648

JO - Optics Express

JF - Optics Express

IS - 26

ER -

Hydrogel based Fabry-Pérot cavity for a pH sensor

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