A model for probe power stabilization in pulse coded distributed optical fiber sensors using EDFA dynamic gain control

Nejat Abdulwahid Hassen; Stefano Faralli; Yonas Muanenda; Fabrizio Di Pasquale

doi:10.1117/12.2644981

22 May 2023 A model for probe power stabilization in pulse coded distributed optical fiber sensors using EDFA dynamic gain control

Nejat Abdulwahid Hassen, Stefano Faralli, Yonas Muanenda, Fabrizio Di Pasquale

Author Affiliations +

Proceedings Volume 12327, SPIE Future Sensing Technologies 2023; 123271Z (2023) https://doi.org/10.1117/12.2644981
Event: SPIE Future Sensing Technologies, 2023, Yokohama, Japan

Conference Poster

Abstract

We propose a flexible computational EDFA dynamic model for amplified modulated probes used in long-distance distributed sensors based on pulse coding, employing Rayleigh, Raman and Brillouin Scattering phenomena. The EDFA dynamics is studied numerically solving the differential equations of the reservoir model for Erbium ion concentrations. The model allows one to identify the optimal choice of gain parameters as well as the gain control mechanism needed for gain stabilization, minimizing both the code-words output power fluctuations and avoiding nonlinear effects which can degrade the distributed sensor performance when using pulse coding techniques such as Simplex, Golay and Cyclic- Simplex. The technique allows distributed sensors to be robust against fluctuations induced by long amplified code sequences, ensuring at the same time enough optical gain to enhance their performance, especially in terms of sensing distance, without overcoming the threshold of nonlinear propagation effects.

Citation Download Citation

Nejat Abdulwahid Hassen, Stefano Faralli, Yonas Muanenda, and Fabrizio Di Pasquale "A model for probe power stabilization in pulse coded distributed optical fiber sensors using EDFA dynamic gain control", Proc. SPIE 12327, SPIE Future Sensing Technologies 2023, 123271Z (22 May 2023); https://doi.org/10.1117/12.2644981

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