Modulation instability-induced visibility fading in phase-sensitive OTDR

• Type: Article in International Conference Proceedings Book
• Date: 2013

Authors

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

Conference proceedings International

Title: FIFTH EUROPEAN WORKSHOP ON OPTICAL FIBRE SENSORS

5th European Workshop on Optical Fibre Sensors

Krakow, POLAND, MAY 19-22, 2013

Indexing

ISI Web of Knowledge - 1 Citation

Scopus - 1 Citation

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4