Open AccessCoherent optical MIMO transmission over 20 km GI multi-mode fiber by using digital coherent receiver with mode convergence unit
Author(s) -
Takahide Mori,
Taiji Sakamoto,
Takashi Yamamoto,
Shigeru Tomita
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.19.016252
Subject(s) - optics , transmission (telecommunications) , mimo , mode (computer interface) , physics , single mode optical fiber , convergence (economics) , optical fiber , radiation mode , channel (broadcasting) , electronic engineering , computer science , telecommunications , engineering , economics , economic growth , operating system
We describe a coherent optical MIMO transmission experiment that employs a digital coherent receiver with a mode convergence unit, which converges higher-order mode light into the fundamental mode while maintaining the phase and amplitude information of the higher-order mode. The coherent optical MIMO transmission of two 10 Gbit/s BPSK signals over 20 km of graded-index multi-mode fiber was successfully achieved by using this mode convergence unit. We also show numerically that multi channel signals for a coherent optical MIMO transmission can be recovered by employing sufficient mode diversity, even if mode conversion occurs in the transmission fiber.