Open AccessSingle-carrier 1-Tb/s PDM-16QAM transmission using high-speed InP MUX-DACs and an integrated OTDM modulator
Author(s) -
Hiroshi Yamazaki,
Akira Sano,
Munehiko Nagatani,
Yutaka Miyamoto
Publication year - 2015
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.23.012866
Subject(s) - quadrature amplitude modulation , multiplexer , modulation (music) , optics , multiplexing , transmission (telecommunications) , optical modulator , signal (programming language) , electronic engineering , phase modulation , computer science , physics , materials science , bit error rate , telecommunications , phase noise , engineering , channel (broadcasting) , acoustics , programming language
We generated a 1-Tb/s single-carrier PDM-16QAM signal using a single optical modulator with external PDM emulation. To achieve the high symbol rate of 125 Gbaud, we used high-speed InP MUX-DAC modules, each consisting of six 2:1 MUXs and a 6-bit DAC in a single package, and an integrated optical modulator, which contains a generator of two orthogonal CSRZ pulse trains for spectrally efficient OTDM followed by IQ modulators for each tributary. The signal was received and demodulated without using any time-domain demultiplexing. Transmission over 80-km SSMF was demonstrated.