A novel SOA-Based method for enhancing SNR in FBG-Based strain and temperature sensing

IF 1.4 4区工程技术 Q4 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE

Analog Integrated Circuits and Signal Processing Pub Date : 2025-08-21 DOI:10.1007/s10470-025-02478-x

Mohammad Reza Kalantari, Saeed Olyaee

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引用次数: 0

Abstract

This paper introduces the first integrated three-stage design including a semiconductor optical amplifier (SOA), an erbium-doped fiber amplifier (EDFA), and a noise suppression loop. This system effectively mitigates amplified spontaneous emission (ASE) noise in fiber Bragg grating (FBG)-based strain and temperature sensing applications. The proposed configuration addresses the persistent challenge of a low signal-to-noise ratio (SNR), which limits the sensitivity and precision of FBG sensors. The system consists of an SOA-based modulator, an EDFA pre-amplifier with feedback control, and a fast photodetector within a noise-suppression module. Previous interrogation methods have achieved SNRs approaching 30 dB. Our design exceeds this threshold, delivering an output SNR improvement of 35.34 dB compared to conventional single-stage architectures. Simulation results validate the effectiveness of the proposed design in enhancing signal quality. They also demonstrate its strong potential for deployment in high-precision sensing applications, including structural health monitoring, aerospace systems, and biomedical diagnostics.

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基于soa的fbg应变和温度传感信噪比提高方法

本文介绍了第一个集成的三级设计，包括半导体光放大器（SOA）、掺铒光纤放大器（EDFA）和噪声抑制环路。该系统有效地缓解了光纤布拉格光栅（FBG）应变和温度传感应用中的放大自发发射（ASE）噪声。提出的配置解决了低信噪比（SNR）的持续挑战，这限制了FBG传感器的灵敏度和精度。该系统由一个基于soa的调制器、一个带有反馈控制的EDFA前置放大器和一个噪声抑制模块内的快速光电探测器组成。以前的审讯方法的信噪比已经接近30分贝。我们的设计超过了这个阈值，与传统的单级架构相比，输出信噪比提高了35.34 dB。仿真结果验证了该设计在提高信号质量方面的有效性。它们还展示了其在高精度传感应用中部署的强大潜力，包括结构健康监测、航空航天系统和生物医学诊断。

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来源期刊

Analog Integrated Circuits and Signal Processing 工程技术-工程：电子与电气

CiteScore

0.30

自引率

7.10%

发文量

141

审稿时长

7.3 months

期刊介绍： Analog Integrated Circuits and Signal Processing is an archival peer reviewed journal dedicated to the design and application of analog, radio frequency (RF), and mixed signal integrated circuits (ICs) as well as signal processing circuits and systems. It features both new research results and tutorial views and reflects the large volume of cutting-edge research activity in the worldwide field today. A partial list of topics includes analog and mixed signal interface circuits and systems; analog and RFIC design; data converters; active-RC, switched-capacitor, and continuous-time integrated filters; mixed analog/digital VLSI systems; wireless radio transceivers; clock and data recovery circuits; and high speed optoelectronic circuits and systems.