Abstract

The potential for higher spectral efficiency and recent activities in the area of coherent optical systems raise the interest in new multi-level modulation formats for optical transmission. In this paper Square-16-QAM is introduced as a novel candidate for future high-capacity and high spectrally efficient optical systems. Different possible transmitters as well as the homodyne| IQ-receiver are illustrated. At the transmitter side the implementation of an electrical level-generator is shown experimentally. At the receiver side options for the realization of the optical 2×4 90°-hybrid are discussed. Furthermore, an algorithm for Square-16-QAM digital phase estimation is developed, whose performance and limitations are investigated in simulations.

© 2006 Optical Society of America

PDF Article
More Like This
Modified CMA Based Blind Carrier-Phase Estimation for 16-QAM Homodyne Digital Coherent Optical Receivers

Md. Ibrahim Khalil, Arshad M. Chowdhury, and Gee-Kung Chang
JTh2A.12 CLEO: Applications and Technology (CLEO_AT) 2014

Transmitter IQ Mismatch Compensation Based on Second Order Moment Estimation for Coherent Optical M-QAM System

Chao Li, Zhengyuan Xu, Qi Yang, and Shaohua Yu
AF4B.1 Asia Communications and Photonics Conference (ACPC) 2016

Phase-Diversity Homodyne Receiver for Coherent Optical Communications

Kazuro Kikuchi
CThB3 Coherent Optical Technologies and Applications (COTA) 2006

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription