Open AccessDesign and fabrication of ultra-low crosstalk and low-loss multi-core fiber
Author(s) -
Tetsuya Hayashi,
Toshiki Taru,
Osamu Shimakawa,
Takashi Sasaki,
Eisuke Sasaoka
Publication year - 2011
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.19.016576
Subject(s) - materials science , crosstalk , trench , attenuation , optics , fabrication , optical fiber , photonic crystal fiber , refractive index , graded index fiber , plastic clad silica fiber , plastic optical fiber , optoelectronics , fiber optic sensor , composite material , physics , medicine , alternative medicine , layer (electronics) , pathology
We designed and fabricated a multi-core fiber (MCF) in which seven identical trench-assisted pure-silica cores were arranged hexagonally. To design MCF, the relation among the crosstalk, fiber parameters, and fiber bend was derived using a new approximation model based on the coupled-mode theory with the equivalent index model. The mean values of the statistical distributions of the crosstalk were observed to be extremely low and estimated to be less than -30 dB even after 10,000-km propagation because of the trench-assisted cores and utilization of the fiber bend. The attenuation of each core was very low for MCFs (0.175-0.181 dB/km at 1550 nm) because of the pure-silica cores. Both the crosstalk and attenuation values are the lowest achieved in MCFs.