Abstract

The accurate mapping of chromatic-dispersion distribution along single-mode optical fibers with the best spatial resolution ever reported is experimentally demonstrated. The method consists of a new way of probing four-wave-mixing (FWM) efficiency along the fiber using Brillouin-optical-time-domain analysis (BOTDA). The new setup eliminates many noise problems found in previous configurations, allowing a tenfold improvement in the spatial resolution of this kind of measurements. Resolutions of 20 m in a 1.1-km standard fiber and 150 m in a 6.7-km dispersion-shifted fiber (DSF), respectively, were achieved.

© 2005 IEEE

Distributed measurement of chromatic dispersion by four-wave mixing and Brillouin optical-time-domain analysis

Miguel González Herráez, Luc Thévenaz, and Philippe Robert
Opt. Lett. 28(22) 2210-2212 (2003)

High-order dispersion mapping of an optical fiber

A. Gil-Molina, J. A. Castañeda, D. F. Londono-Giraldo, L. H. Gabrielli, A. M. Cárdenas, and H. L. Fragnito
Opt. Express 28(3) 4258-4273 (2020)

High spatial resolution distributed sensing in optical fibers by Brillouin gain-profile tracing

Tom Sperber, Avishay Eyal, Moshe Tur, and Luc Thévenaz
Opt. Express 18(8) 8671-8679 (2010)

Simplex-coded BOTDA fiber sensor with 1 m spatial resolution over a 50 km range

Marcelo A. Soto, Gabriele Bolognini, Fabrizio Di Pasquale, and Luc Thévenaz
Opt. Lett. 35(2) 259-261 (2010)

Differential Brillouin gain for improving the temperature accuracy and spatial resolution in a long-distance distributed fiber sensor

Yongkang Dong, Xiaoyi Bao, and Wenhai Li
Appl. Opt. 48(22) 4297-4301 (2009)