By Topic

Laser phase noise induced error-rate floors in differential n-level phase-shift-keying coherent receivers

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $33
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
G. Jacobsen ; Transmission and Networking Department, Acreo AB

A simple and illustrative analytical model for the phase noise influence in differential n-level phase shift keying (nPSK) systems is presented. Results for the phase noise sensitivity are given for a dual polarisation system configuration with basic baud-rate of 25 GS/s. Results emphasise the need for highly phase stable optical signal sources in higher constellation configurations as needed for total system capacities of 400 Gbit/s or more. Classical distributed feedback laser diodes with linewidth of 200 kHz-10 MHz are not feasible beyond the order of 200 Gbit/s capacity. 2n-level circular quadrature amplitude modulated (2nQAM) systems may increase the capacity by 50 Gbit/s compared to nPSK with no added phase noise penalty.

Published in:

Electronics Letters  (Volume:46 ,  Issue: 10 )