RT info:eu-repo/semantics/article
T1 Modulation instability-induced fading in phase-sensitive optical time-domain reflectometry
A1 Fidalgo Martins, Hugo
A1 Martín López, Sonia
A1 Corredera, Pedro
A1 Salgado, P.
A1 Frazão, O.
A1 González Herráez, Miguel
K1 Distributed monitoring
K1 Effective tool
K1 Interference signal
K1 Modulation instabilities
K1 Optical time domain reflectometry
K1 Phase-sensitive
K1 Signal fading
K1 Ciencias tecnológicas
K1 Electrónica
K1 Technology
K1 Electronics
AB Phase-sensitive optical time-domain reflectometry (φOTDR) is a simple and effective tool allowing the distributed monitoring of vibrations along single-mode fibers. We show in this Letter that modulation instability (MI) can induce a position-dependent signal fading in long-range φOTDR over conventional optical fibers. This fading leads to a complete masking of the interference signal recorded at certain positions and therefore to a sensitivity loss at these positions. We illustrate this effect both theoretically and experimentally. 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 recurrence associated with the MI process.
PB Optical Society of America
SN 0146-9592
YR 2013
FD 2013-03-15
LK http://hdl.handle.net/10017/26438
UL http://hdl.handle.net/10017/26438
LA eng
NO European Commission
DS MINDS@UW
RD 01-may-2024