Title :
16-level quadrature amplitude modulation by monolithic quad-parallel mach-zehnder optical modulator
Author :
Chiba, Akira ; Sakamoto, Takanori ; Kawanishi, Tetsuyas ; Higuma, Kaoru ; Sudo, M. ; Ichikawa, Junichiro
Author_Institution :
Nat. Inst. of Inf. & Commun. Technol., Koganei, Japan
Abstract :
A monolithically-integrated quad-parallel Mach-Zehnder optical modulator has been fabricated. 3 and 6 dB electro-optical bandwidths of Mach-Zehnder structures embedded in the modulator were evaluated as 22 and 36 GHz, respectively. By using the monolithic optical modulator, a 10 Gbaud 16-level quadrature amplitude modulation (QAM) signal was successfully obtained.
Keywords :
Mach-Zehnder interferometers; integrated optics; optical communication equipment; optical modulation; quadrature amplitude modulation; monolithic optical modulator; monolithic quadparallel Mach-Zehnder optical modulator; quadrature amplitude modulation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2010.3141
