Title :
Mapping of chromatic-dispersion distribution along optical fibers with 20-m spatial resolution
Author :
Song, Kwang-Yong ; Herráez, Miguel González ; Thévenaz, Luc
Author_Institution :
Ecole Polytechnique Fed. de Lausanne, Nanophotonics & Metrol. Lab., Lausanne, Switzerland
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.
Keywords :
Brillouin spectra; multiwave mixing; optical fibre dispersion; optical fibre testing; 1.1 km; 6.7 km; Brillouin-optical-time-domain analysis; chromatic-dispersion distribution; dispersion-shifted fiber; four-wave-mixing; optical fibers; spatial resolution; Fiber nonlinear optics; Nonlinear optics; Optical fiber devices; Optical fiber dispersion; Optical fibers; Optical mixing; Optical noise; Optical scattering; Optical solitons; Spatial resolution; Brillouin scattering; nonlinear optics; optical-fiber dispersion; optical-fiber measurements;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2005.858240
