Open AccessDetailed comparison between mode couplings along multi-core fibers and structural irregularities using a synchronous multi-channel OTDR system with a high dynamic range
Author(s) -
Masato Yoshida,
Toshihiko Hirooka,
Katsunori Imamura,
Ryuichi Sugizaki,
T. Yagi
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.029157
Subject(s) - optical time domain reflectometer , optics , dynamic range , coupling (piping) , optical fiber , core (optical fiber) , optical amplifier , materials science , channel (broadcasting) , fiber , amplifier , multi mode optical fiber , mode coupling , single mode optical fiber , polarization maintaining optical fiber , fiber optic sensor , optoelectronics , physics , telecommunications , computer science , cmos , laser , metallurgy , composite material
We have greatly increased the dynamic range of a synchronous multi-channel OTDR system for the mode coupling measurement of a multi-core fiber (MCF) by more than 20 dB by introducing an optical amplifier and an optical masking apparatus. We used the OTDR system to measure the mode coupling along 10 km-long MCFs with low crosstalks of less than -50 dB. Thus, we successfully measured the fiber structural irregularity dependence of mode coupling along the MCF.