Impact of non-Lorentzian laser phase noise on 𝝓-OTDR performance

Christian Dorize; Sterenn Guerrier; Élie Awwad; Jérémie Renaudier

doi:10.1117/12.2678119

23 May 2023 Impact of non-Lorentzian laser phase noise on Φ-OTDR performance

Christian Dorize, Sterenn Guerrier, Élie Awwad, Jérémie Renaudier

Proceedings Volume 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023); 1264321 (2023) https://doi.org/10.1117/12.2678119
Event: European Workshop on Optical Fibre Sensors (EWOFS 2023), 2023, Mons, Belgium

Abstract

We highlight the importance of the laser source phase noise in sensing applications and show that the standard Lorentzian linewidth criterion is not sufficient to characterize the performance of a sensing system. We then derive a laser linewidth related to the phase noise spectral region of interest, according to the length of the fiber to sense. This is illustrated in a setup based on coded interrogation and with two sensing dedicated laser sources.

Citation Download Citation

Christian Dorize, Sterenn Guerrier, Élie Awwad, and Jérémie Renaudier "Impact of non-Lorentzian laser phase noise on Φ-OTDR performance", Proc. SPIE 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023), 1264321 (23 May 2023); https://doi.org/10.1117/12.2678119

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