Chinese Journal of Lasers, Volume. 37, Issue 11, 2872(2010)
A Novel Scheme for Optical Inverse Return-to-Zero-Differetial Quadrature Phase-Shift-Keying Modulation
A novel scheme to generate inverse return-to-zero-differetial quadrature phase-shift-keying (IRZ-DQPSK) modulation format is introduced. The IRZ signal generated in this scheme does not contain any original phase information, so it is convenient to combine IRZ modulation with the phase modulation, and both the duty cycle and the extinction ratio of the IRZ-DQPSK signal are tunable. The influence of self phase modulation (SPM) is compared between IRZ-DQPSK and amplitude shift keying-differetial quadrature phase-shift-keying (ASK-DQPSK) in a 40Gb/s single channel long distance transmission by simulation. Results show that IRZ-DQPSK signal offers much better performance against SPM.
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Wen Aijun, Lü Liang, Yang Lei, Shang Lei, Li Xiaojun. A Novel Scheme for Optical Inverse Return-to-Zero-Differetial Quadrature Phase-Shift-Keying Modulation[J]. Chinese Journal of Lasers, 2010, 37(11): 2872
Category: Optical communication
Received: Dec. 31, 2009
Accepted: --
Published Online: Nov. 16, 2010
The Author Email: Aijun Wen (ajwen@xidian.edu.cn)