Performance of a distributed simultaneous strain and temperature sensor based on a Fabry-Perot laser diode and a dual-stage FBG optical demultiplexer

Suhwan Kim; Hyungwoo Kwon; Injae Yang; Seungho Lee; Jeehyun Kim; Shinwon Kang

doi:10.3390/s131115452

Performance of a distributed simultaneous strain and temperature sensor based on a Fabry-Perot laser diode and a dual-stage FBG optical demultiplexer

Suhwan Kim, Hyungwoo Kwon, Injae Yang, Seungho Lee, Jeehyun Kim, Shinwon Kang

School of Electronics Engineering

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

10 Scopus citations

Abstract

A simultaneous strain and temperature measurement method using a Fabry-Perot laser diode (FP-LD) and a dual-stage fiber Bragg grating (FBG) optical demultiplexer was applied to a distributed sensor system based on Brillouin optical time domain reflectometry (BOTDR). By using a Kalman filter, we improved the performance of the FP-LD based OTDR, and decreased the noise using the dual-stage FBG optical demultiplexer. Applying the two developed components to the BOTDR system and using a temperature compensating algorithm, we successfully demonstrated the simultaneous measurement of strain and temperature distributions under various experimental conditions. The observed errors in the temperature and strain measured using the developed sensing system were 0.6 °C and 50 με, and the spatial resolution was 1 m, respectively.

Original language	English
Pages (from-to)	15452-15464
Number of pages	13
Journal	Sensors
Volume	13
Issue number	11
DOIs	https://doi.org/10.3390/s131115452
State	Published - 12 Nov 2013

Keywords

BOTDR
Distributed optical sensors
Fabry-Perot laser diode
OTDR
Simultaneous temperature and strain measurement

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10.3390/s131115452

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abstract = "A simultaneous strain and temperature measurement method using a Fabry-Perot laser diode (FP-LD) and a dual-stage fiber Bragg grating (FBG) optical demultiplexer was applied to a distributed sensor system based on Brillouin optical time domain reflectometry (BOTDR). By using a Kalman filter, we improved the performance of the FP-LD based OTDR, and decreased the noise using the dual-stage FBG optical demultiplexer. Applying the two developed components to the BOTDR system and using a temperature compensating algorithm, we successfully demonstrated the simultaneous measurement of strain and temperature distributions under various experimental conditions. The observed errors in the temperature and strain measured using the developed sensing system were 0.6 °C and 50 με, and the spatial resolution was 1 m, respectively.",

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author = "Suhwan Kim and Hyungwoo Kwon and Injae Yang and Seungho Lee and Jeehyun Kim and Shinwon Kang",

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AU - Kim, Suhwan

AU - Kwon, Hyungwoo

AU - Yang, Injae

AU - Lee, Seungho

AU - Kim, Jeehyun

AU - Kang, Shinwon

PY - 2013/11/12

Y1 - 2013/11/12

N2 - A simultaneous strain and temperature measurement method using a Fabry-Perot laser diode (FP-LD) and a dual-stage fiber Bragg grating (FBG) optical demultiplexer was applied to a distributed sensor system based on Brillouin optical time domain reflectometry (BOTDR). By using a Kalman filter, we improved the performance of the FP-LD based OTDR, and decreased the noise using the dual-stage FBG optical demultiplexer. Applying the two developed components to the BOTDR system and using a temperature compensating algorithm, we successfully demonstrated the simultaneous measurement of strain and temperature distributions under various experimental conditions. The observed errors in the temperature and strain measured using the developed sensing system were 0.6 °C and 50 με, and the spatial resolution was 1 m, respectively.

AB - A simultaneous strain and temperature measurement method using a Fabry-Perot laser diode (FP-LD) and a dual-stage fiber Bragg grating (FBG) optical demultiplexer was applied to a distributed sensor system based on Brillouin optical time domain reflectometry (BOTDR). By using a Kalman filter, we improved the performance of the FP-LD based OTDR, and decreased the noise using the dual-stage FBG optical demultiplexer. Applying the two developed components to the BOTDR system and using a temperature compensating algorithm, we successfully demonstrated the simultaneous measurement of strain and temperature distributions under various experimental conditions. The observed errors in the temperature and strain measured using the developed sensing system were 0.6 °C and 50 με, and the spatial resolution was 1 m, respectively.

KW - BOTDR

KW - Distributed optical sensors

KW - Fabry-Perot laser diode

KW - OTDR

KW - Simultaneous temperature and strain measurement

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U2 - 10.3390/s131115452

DO - 10.3390/s131115452

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JO - Sensors

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ER -

Performance of a distributed simultaneous strain and temperature sensor based on a Fabry-Perot laser diode and a dual-stage FBG optical demultiplexer

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Keywords

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