Open AccessUp to 80 Gbaud DP‐16QAM operation using InP‐based high‐bandwidth coherent driver modulator
Author(s) -
Ozaki J.,
Ogiso Y.,
Hashizume Y.,
Kanazawa S.,
Ueda Y.,
Nunoya N.,
Tanobe H.,
Ishikawa M.
Publication year - 2019
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2019.1439
Subject(s) - baud , bandwidth (computing) , quadrature amplitude modulation , optics , physics , optical modulator , coplanar waveguide , electronic engineering , optoelectronics , electrical engineering , computer science , bit error rate , phase modulation , engineering , telecommunications , phase noise , transmission (telecommunications) , channel (broadcasting) , microwave
The authors obtained very good back‐to‐back bit error rate performance in up to 80 Gbaud DP‐16QAM operation by using their coherent driver modulator of a 3‐dB electro‐optic bandwidth of over 50 GHz. To achieve high bandwidth and good signal integrity, they used double ultra‐low loop wires between the driver IC and the modulator and a differential capacitively loaded travelling‐wave RF electrode based on straight coupled coplanar waveguide with a ground‐signal–signal‐ground configuration for their InP modulator. As far as they know, this is the highest bandwidth and baud rate operation so far for the high‐bandwidth coherent driver modulator configuration.