Mapping of chromatic-dispersion distribution along optical fibers with 20-m spatial resolution
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.
Keywords: Optical fibers ; Single mode fibers ; Optical pumping ; Nonlinear optics ; Optical resolving power ; Four wave mixing ; Brillouin scattering ; Refractive index ; Polarization ; Waveform analysis ; Spectrum analysis ; Fourier transforms ; Mathematical models
Department of Electronic Engineering, The University of Tokyo, Tokyo 113-8656, Japan Compilation and indexing terms, Copyright 2008 Elsevier Inc. 06059671717 0733-8724 Optical fiber dispersion Optical-fiber measurement
Record created on 2008-09-29, modified on 2016-12-05