Peer-Reviewed Journal Details
Mandatory Fields
Walsh A.;Shams H.;Mountjoy J.;Fagan A.;Zhao J.;Barry L.;Ellis A.
2013
May
IEEE Photonics Technology Letters
Demonstrating doubly-differential quadrature phase shift keying in the optical domain
Published
5 ()
Optional Fields
Burst switching optical fiber communication phase modulation
25
11
1054
1057
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. © 1989-2012 IEEE.
1041-1135
10.1109/LPT.2013.2257726
Grant Details