Investigation on the maximum signal handling capability of fiber optic interferometric sensor based on the digital heterodyne demodulation scheme

Zhang, Nan; Rao, Wei; Zhang, Meng; Xiong, Shuidong

doi:10.1016/j.ijleo.2014.07.017

Cited by 3 publications

(1 citation statement)

References 15 publications

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“…Various signal detection schemes and corresponding optimization methods have been investigated [3][4][5][6]. Among these, heterodyne detection techniques have received attention and research, showing excellent performance in the dynamic range [7][8][9]. Still, some applications require a dynamic range beyond the existing signal detection techniques [10].…”

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Dynamic range extension for heterodyne fibre‐optic hydrophone by using instantaneous frequency‐tracking method

Yang,

Zhang,

Wang

2023

Electronics Letters

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This letter proposes a novel dynamic range extension method using an instantaneous frequency (IF)‐tracking method for heterodyne fibre optic hydrophones (FOHs). IFs are used to compensate for large signal amplitudes in the demodulator. Theoretical analysis and simulation prove the effectiveness of the proposed algorithm. Simulation results achieve at least 19.76 dB dynamic range improvement, demonstrating great potential for extending FOHs for hydroacoustic detection and communication applications.

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confidence: 99%

Dynamic range extension for heterodyne fibre‐optic hydrophone by using instantaneous frequency‐tracking method

Yang,

Zhang,

Wang

2023

Electronics Letters

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Design of High-precision Optical Heterodyne Interferometer Phase Demodulation System

Chen

Xie

Wang

et al. 2022

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE)

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A Novel PMDI Fiber Optic Hydrophone Incorporating IOC-Based Phase Modulator

2023

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Fiber-optic hydrophone (FOH) has significant potential in many applications of hydroacoustic sensing and underwater communication. A novel path-matched differential interferometer fiber optic hydrophone (PMDI-FOH) approach incorporating an integrated-optic component (IOC) is presented in this paper. It is presented to meet the demands for high-quality dynamic measurements, which solves the problems with the conventional homodyne detection system’s low modulation frequency. The IOC functions as a phase-generated carrier (PGC) component. The scheme is investigated both in theory and experiments. The theoretical and experimental results verify the effectiveness of the proposed scheme. It achieves a high SNR of up to 20.29 dB demodulations. The proposed system is cost-effective and has excellent potential in building next-generation underwater sensing and communication networks.

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Investigation on the maximum signal handling capability of fiber optic interferometric sensor based on the digital heterodyne demodulation scheme

Cited by 3 publications

References 15 publications

Dynamic range extension for heterodyne fibre‐optic hydrophone by using instantaneous frequency‐tracking method

Dynamic range extension for heterodyne fibre‐optic hydrophone by using instantaneous frequency‐tracking method

Design of High-precision Optical Heterodyne Interferometer Phase Demodulation System

A Novel PMDI Fiber Optic Hydrophone Incorporating IOC-Based Phase Modulator

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