Open Access423 Tbit/s, 18 Gbaud 64 QAM WDM coherent transmission over 160 km in the C-band using an injection-locked homodyne receiver with a spectral efficiency of 9 bit/s/Hz
Author(s) -
Takashi Kikuchi,
Keisuke Kasai,
Masato Yoshida
Publication year - 2017
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.25.022726
Subject(s) - terabit , wavelength division multiplexing , optics , homodyne detection , multiplexing , multiplexer , physics , quadrature amplitude modulation , polarization division multiplexing , transmission (telecommunications) , phase noise , local oscillator , spectral efficiency , direct conversion receiver , bit error rate , channel (broadcasting) , telecommunications , wavelength , computer science
We demonstrate a 235-channel wavelength division multiplexing (WDM), polarization-multiplexed (pol-mux) 18-Gbaud 64 QAM coherent transmission of 160 km over the full C-band. By applying an injection-locked homodyne detection circuit to WDM coherent transmission, we have achieved low noise optical carrier-phase locking between transmitted data and a local oscillator over the full C-band range. As a result, a potential capacity of 42.3 Tbit/s data with a spectral efficiency of 9 bit/s/Hz was transmitted.