Modulation instability-induced visibility fading in phase-sensitive OTDR

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2013

Autores

Martins, HF (Autor) Outra; Martin Lopez, S (Autor) Outra; Corredera, P (Autor) Outra; Salgado, P (Autor) Outra; Frazao, O (Autor) FCUP; Gonzalez Herraez, M (Autor) Outra

Ata de Conferência Internacional

Título: FIFTH EUROPEAN WORKSHOP ON OPTICAL FIBRE SENSORS

5th European Workshop on Optical Fibre Sensors

Krakow, POLAND, MAY 19-22, 2013

Indexação

ISI Web of Knowledge - 1 Citação

Scopus - 1 Citação

Outras Informações

ID Authenticus: P-006-FTS

DOI: 10.1117/12.2026062

Abstract (EN): Phase-sensitive optical time domain reflectometry (phi OTDR) 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 phi OTDR 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 phi OTDR, 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 4