By Topic

Multifrequency modulation for high-sensitivity coherent optical systems

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
$31 $13
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

3 Author(s)
Betti, S. ; Fondazione Ugo Bordoni, Rome, Italy ; de Marchis, G. ; Iannone, E.

A new instantaneous multilevel modulation format is proposed that allows the optical bandwidth to be fully exploited without requiring an electrical bandwidth of the same order of magnitude. The format is more efficient than multilevel wide-deviation frequency-shift-keying (FSK), suffering only a limited penalty with respect to coherent pulse position modulation. The modulated signal is generated by the same criterion adopted for multilevel wide-deviation FSK, but for each optical carrier a modulation format more efficient than binary amplitude-shift-keying (ASK) is chosen. Multilevel four-quadrature modulation is used. In order to obtain power-efficient signaling, the transmitted symbols are associated with the field configurations in such a way that just one frequency carrier at a time is modulated

Published in:

Lightwave Technology, Journal of  (Volume:11 ,  Issue: 11 )