Demonstrating doubly-differential quadrature phase shift keying in the optical domain


We report for the first time the experimental demonstration of doubly differential quadrature phase shift keying (DDQPSK) using optical coherent detection. This method is more robust against high frequency offsets (FO) than conventional single differential quadrature phase shift keying (SDQPSK) with offset compensation. DDQPSK is shown to be able to compensate large FOs (up to the baud rate) and has lower computational requirements than other FO compensation methods. DDQPSK is a simple algorithm to implement in a real-time decoder for optical burst switched network scenarios. Simulation results are also provided, which show good agreement with the experimental results for both SDQPSK and DDQPSK transmissions.

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Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
Additional Information: © 2013 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Uncontrolled Keywords: phase modulation,burst switching,optical fiber communication
Publication ISSN: 1941-0174
Last Modified: 12 Apr 2024 07:10
Date Deposited: 22 May 2014 13:05
Full Text Link: http://ieeexplo ... rnumber=6497500
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2013-06-01
Published Online Date: 2013-04-12
Authors: Walsh, Anthony J.
Shams, Haymen
Mountjoy, James
Fagan, Anthony
Zhao, Jian
Barry, Liam P.
Ellis, Andrew D. (ORCID Profile 0000-0002-0417-0547)



Version: Published Version

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