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

Walsh, Anthony J., Shams, Haymen, Mountjoy, James, Fagan, Anthony, Zhao, Jian, Barry, Liam P. and Ellis, Andrew D. (2013). Demonstrating doubly-differential quadrature phase shift keying in the optical domain. IEEE Photonics Technology Letters, 25 (11), pp. 1054-1057.

Abstract

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.

Publication DOI: https://doi.org/10.1109/LPT.2013.2257726
Divisions: Engineering & Applied Sciences > Electrical, electronic & power engineering
Engineering & Applied Sciences > Institute of Photonics
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
Full Text Link: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6497500
Related URLs: http://www.scopus.com/inward/record.url?scp=84877900411&partnerID=8YFLogxK (Scopus URL)
Published Date: 2013-06-01
Authors: Walsh, Anthony J.
Shams, Haymen
Mountjoy, James
Fagan, Anthony
Zhao, Jian
Barry, Liam P.
Ellis, Andrew D. ( 0000-0002-0417-0547)

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