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Modulation instability-induced visibility fading in phase-sensitive OTDR
Phase-sensitive optical time domain reflectometry (ΦOTDR) is a simple and effective tool that allows the distributed monitoring of vibrations along single-mode fibers. In this letter we study the effects of modulation instability (MI) in long-range ΦOTDR over conventional optical fibers. We demonstrate both theoretically and experimentally that MI can induce a position-dependent signal fading which leads to a nearly complete visibility loss in the interference signal recorded at certain positions and therefore to a sensitivity loss at these positions. While this effect is detrimental in the context of distributed vibration analysis using ΦOTDR, we also believe that the technique provides a clear and insightful way to evidence the Fermi-Pasta-Ulam (FPU) recurrence associated to the MI process. ; Ministerio de Economía y Competitividad ; Comunidad de Madrid ; European Commission
Modulation instability-induced visibility fading in phase-sensitive OTDR
Phase-sensitive optical time domain reflectometry (ΦOTDR) is a simple and effective tool that allows the distributed monitoring of vibrations along single-mode fibers. In this letter we study the effects of modulation instability (MI) in long-range ΦOTDR over conventional optical fibers. We demonstrate both theoretically and experimentally that MI can induce a position-dependent signal fading which leads to a nearly complete visibility loss in the interference signal recorded at certain positions and therefore to a sensitivity loss at these positions. While this effect is detrimental in the context of distributed vibration analysis using ΦOTDR, we also believe that the technique provides a clear and insightful way to evidence the Fermi-Pasta-Ulam (FPU) recurrence associated to the MI process. ; Ministerio de Economía y Competitividad ; Comunidad de Madrid ; European Commission
Modulation instability-induced visibility fading in phase-sensitive OTDR
Fidalgo Martins, Hugo (author) / Martín López, Sonia (author) / Corredera, Pedro (author) / Salgado, P. (author) / Frazão, O. (author) / González Herráez, Miguel (author) / Ingeniería Fotónica / Universidad de Alcalá. Departamento de Electrónica
2013-05-19
doi:10.1117/12.2026062
Article (Journal)
Electronic Resource
English
DDC:
624
Modulation instability-induced fading in phase-sensitive optical time-domain reflectometry
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