Multiplexing of Fabry-Pérot Sensor by Frequency Modulated Continuous Wave Interferometry for Quais-Distributed Sensing Application

Zongda Zhu; Dexin Ba; Lu Liu; Liqiang Qiu; Shunhu Yang; Yongkang Dong

doi:10.1109/jlt.2021.3071718

Multiplexing of Fabry-Pérot Sensor by Frequency Modulated Continuous Wave Interferometry for Quais-Distributed Sensing Application

Zongda Zhu, Dexin Ba, Lu Liu, Liqiang Qiu, Shunhu Yang, Yongkang Dong

Harbin Institute of Technology

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

9 Scopus citations

Abstract

Fiber Fabry-Pérot (FP) sensor, as an optical sensor with simple structure and the most application fields, has attracted a lot of attention in recent decades, but it also faces the difficulty of multiplexing. In this paper, we propose and demonstrate a novel multiplexing method of FP sensor with multi-branch configuration interrogated with frequency modulated continuous wave interferometry. By an algorithm based on Fourier transform, the sub-sensors are addressable and their interference spectrum can be demodulated independently. For demonstration, the quasi-distributed refractive index (RI) sensing experiment is realized. The experiment results inherit high RI sensitivity of the traditional FP sensor around 1200 nm/RIU and high RI resolution smaller than 5 × 10-6 RIU. Besides, thanks to the advantage of coherence detection, the spectrum can be demodulated from the reflection signal of <2 pW, which provides the possibility for a huge multiplexing amount, about 8000 in theory. The proposed multiplexing method is significant for practical applications of the traditional FP sensor.

Original language	English
Article number	9399233
Pages (from-to)	4529-4534
Number of pages	6
Journal	Journal of Lightwave Technology
Volume	39
Issue number	13
DOIs	https://doi.org/10.1109/jlt.2021.3071718
State	Published - 1 Jul 2021
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 1983-2012 IEEE.

Funding

Manuscript received January 24, 2021; revised March 3, 2021 and March 28, 2021; accepted April 5, 2021. Date of publication April 8, 2021; date of current version July 2, 2021. This work was supported in part by the National Key Research and Development Program of China under Grant 2016YFE0202400, in part by the National Natural Science Foundation of China (NSFC) under Grant 61975045, and in part by the Natural Science Foundation of Heilongjiang Province under Grant LH2020F014. (Zongda Zhu and Dexin Ba contributed equally to this work.) (Corresponding author: Yongkang Dong.) Zongda Zhu, Dexin Ba, Liqiang Qiu, Shunhu Yang, and Yongkang Dong are with the National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology, Harbin 150001, China (e-mail: [email protected]; [email protected]; [email protected]; [email protected]; [email protected]).

Funders	Funder number
National Natural Science Foundation of China	61975045
Natural Science Foundation of Heilongjiang Province	LH2020F014
National Key Research and Development Program of China	2016YFE0202400

Keywords

FMCW interferometry
Fabry-Pérot sensor
multiplexing technique
quasi-distributed sensing

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10.1109/jlt.2021.3071718

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title = "Multiplexing of Fabry-P{\'e}rot Sensor by Frequency Modulated Continuous Wave Interferometry for Quais-Distributed Sensing Application",

abstract = "Fiber Fabry-P{\'e}rot (FP) sensor, as an optical sensor with simple structure and the most application fields, has attracted a lot of attention in recent decades, but it also faces the difficulty of multiplexing. In this paper, we propose and demonstrate a novel multiplexing method of FP sensor with multi-branch configuration interrogated with frequency modulated continuous wave interferometry. By an algorithm based on Fourier transform, the sub-sensors are addressable and their interference spectrum can be demodulated independently. For demonstration, the quasi-distributed refractive index (RI) sensing experiment is realized. The experiment results inherit high RI sensitivity of the traditional FP sensor around 1200 nm/RIU and high RI resolution smaller than 5 × 10-6 RIU. Besides, thanks to the advantage of coherence detection, the spectrum can be demodulated from the reflection signal of <2 pW, which provides the possibility for a huge multiplexing amount, about 8000 in theory. The proposed multiplexing method is significant for practical applications of the traditional FP sensor.",

keywords = "FMCW interferometry, Fabry-P{\'e}rot sensor, multiplexing technique, quasi-distributed sensing",

author = "Zongda Zhu and Dexin Ba and Lu Liu and Liqiang Qiu and Shunhu Yang and Yongkang Dong",

note = "Publisher Copyright: {\textcopyright} 1983-2012 IEEE.",

year = "2021",

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doi = "10.1109/jlt.2021.3071718",

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AU - Ba, Dexin

AU - Liu, Lu

AU - Qiu, Liqiang

AU - Yang, Shunhu

AU - Dong, Yongkang

PY - 2021/7/1

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N2 - Fiber Fabry-Pérot (FP) sensor, as an optical sensor with simple structure and the most application fields, has attracted a lot of attention in recent decades, but it also faces the difficulty of multiplexing. In this paper, we propose and demonstrate a novel multiplexing method of FP sensor with multi-branch configuration interrogated with frequency modulated continuous wave interferometry. By an algorithm based on Fourier transform, the sub-sensors are addressable and their interference spectrum can be demodulated independently. For demonstration, the quasi-distributed refractive index (RI) sensing experiment is realized. The experiment results inherit high RI sensitivity of the traditional FP sensor around 1200 nm/RIU and high RI resolution smaller than 5 × 10-6 RIU. Besides, thanks to the advantage of coherence detection, the spectrum can be demodulated from the reflection signal of <2 pW, which provides the possibility for a huge multiplexing amount, about 8000 in theory. The proposed multiplexing method is significant for practical applications of the traditional FP sensor.

AB - Fiber Fabry-Pérot (FP) sensor, as an optical sensor with simple structure and the most application fields, has attracted a lot of attention in recent decades, but it also faces the difficulty of multiplexing. In this paper, we propose and demonstrate a novel multiplexing method of FP sensor with multi-branch configuration interrogated with frequency modulated continuous wave interferometry. By an algorithm based on Fourier transform, the sub-sensors are addressable and their interference spectrum can be demodulated independently. For demonstration, the quasi-distributed refractive index (RI) sensing experiment is realized. The experiment results inherit high RI sensitivity of the traditional FP sensor around 1200 nm/RIU and high RI resolution smaller than 5 × 10-6 RIU. Besides, thanks to the advantage of coherence detection, the spectrum can be demodulated from the reflection signal of <2 pW, which provides the possibility for a huge multiplexing amount, about 8000 in theory. The proposed multiplexing method is significant for practical applications of the traditional FP sensor.

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Multiplexing of Fabry-Pérot Sensor by Frequency Modulated Continuous Wave Interferometry for Quais-Distributed Sensing Application

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