Open AccessHigh spatial-density, cladding-pumped 6-mode 7-core fiber amplifier for C-band operation
Author(s) -
Saurabh Jain,
Taiji Sakamoto,
Yongmin Jung,
Ian A. Davidson,
Pranabesh Barua,
J. R. Hayes,
Kohki Shibahara,
Takayuki Mizuno,
Yutaka Miyamoto,
Kazuhide Nakajima,
David J. Richardson
Publication year - 2021
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.428142
Subject(s) - optics , materials science , cladding (metalworking) , multi mode optical fiber , amplifier , dispersion shifted fiber , double clad fiber , fiber laser , polarization maintaining optical fiber , laser diode , optical fiber , plastic optical fiber , optoelectronics , fiber optic sensor , diode , physics , cmos , metallurgy
We present a C-band 6-mode 7-core fiber amplifier in an all-fiberized cladding-pumped configuration for space division multiplexed transmission supporting a record 42 spatial channels. With optimized fiber components (e.g. passively cooled pump laser diode, pump coupler, pump stripper), high power multimode pump light is coupled to the active fiber without any noticeable thermal degradation and an average gain of 18 dB and noise figure of 5.4 dB are obtained with an average differential modal gain of 3.4 dB.