Design of a large-capacity fiber Bragg grating demodulation system based on modulated grating Y-branch tunable laser

Le Wang; Mingli Dong; Xu Zhang; Wei Zhuang; Lianqing Zhu

doi:10.1117/12.3032735

13 September 2024 Design of a large-capacity fiber Bragg grating demodulation system based on modulated grating Y-branch tunable laser

Le Wang, Mingli Dong, Xu Zhang, Wei Zhuang, Lianqing Zhu

Author Affiliations +

Proceedings Volume 13178, Eleventh International Symposium on Precision Mechanical Measurements; 131781R (2024) https://doi.org/10.1117/12.3032735
Event: Eleventh International Symposium on Precision Mechanical Measurements, 2023, Guangzhou, China

Abstract

To achieve synchronous demodulation of a large-capacity Fiber Bragg Grating (FBG) sensor network, a FBG demodulation system based on modulated grating Y-branch (MG-Y) tunable laser is designed, combining wavelength division multiplexing and space division multiplexing technologies. The system consists of MG-Y tunable laser control module and FBG reflection spectrum acquisition module. By calibrating the MG-Y tunable laser, it can output quasi-continuous light with a bandwidth of 40nm and wavelength spacing of 20pm to meet the requirements of wavelength division multiplexing technology. In terms of space division multiplexing technology implementation, the spectrum acquisition module is designed for 16 channels. Finally, experiments were conducted using an Fabry-Perot (F-P) etalon to validate the functionality of the system.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Le Wang, Mingli Dong, Xu Zhang, Wei Zhuang, and Lianqing Zhu "Design of a large-capacity fiber Bragg grating demodulation system based on modulated grating Y-branch tunable laser", Proc. SPIE 13178, Eleventh International Symposium on Precision Mechanical Measurements, 131781R (13 September 2024); https://doi.org/10.1117/12.3032735

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KEYWORDS

Fiber Bragg gratings

Tunable lasers

Demodulation

Sensors

Reflection

Optical gratings

Reflectors

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