Correlation Demodulation for Low- Finesse Fabry-Pérot Sensors Based on Microwave Photonics

Microwave photonics technology is gaining increasing popularity in the realm of optical fiber sensing. A new Fabry-Pérot (FP) correlative demodulation technique combining microwave photonics technology (MWP) and frequency-swept light source (FSL) method is proposed. The demodulation of FP cavity len...

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Published in:Journal of lightwave technology 2024-05, Vol.42 (10), p.3929-3935
Main Authors: Chen, Yuru, Lei, Xiaohua, Ma, Shuaihua, Zhang, Peng, Liu, Xianming
Format: Article
Language:English
Subjects:
Correlation
Correlation demodulation
Cross correlation
Demodulation
Fabry-Pérot sensor
Frequency modulation
Interference
Light sources
Microwave frequencies
Microwave photonics
Optical fibers
Photonics
Sensors
Signal generators
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container_issue 10
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creator Chen, Yuru
Lei, Xiaohua
Ma, Shuaihua
Zhang, Peng
Liu, Xianming
description Microwave photonics technology is gaining increasing popularity in the realm of optical fiber sensing. A new Fabry-Pérot (FP) correlative demodulation technique combining microwave photonics technology (MWP) and frequency-swept light source (FSL) method is proposed. The demodulation of FP cavity length is operated by the correlation calculations between the interference frequency of the FP sensor and the microwave frequency. The fundamental theory of cross-correlation makes the FSL-MWP method highly resistant to noise. The frequency interval of the microwave signal generator (MSG) and high sweeping rate of the FSL leads to enhanced resolution and precision.
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source IEEE Electronic Library (IEL) Journals
subjects Correlation
Correlation demodulation
Cross correlation
Demodulation
Fabry-Pérot sensor
Frequency modulation
Interference
Light sources
Microwave frequencies
Microwave photonics
Optical fibers
Photonics
Sensors
Signal generators
title Correlation Demodulation for Low- Finesse Fabry-Pérot Sensors Based on Microwave Photonics
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