A novel scheme for optical inverse return-to-zero-differential quadrature phase-shift-keying modulation

作者：Wen Aijun^*; Lü Liang; Yang Lei; Shang Lei; Li Xiaojun

来源：Chinese Journal of Lasers, 2010, 37(11): 2872-2878.

DOI：10.3788/CJL20103711.2872

• 40 Gb/s
• Amplitude and phase modulations
• Amplitude shift keying
• Differential quadrature
• Duty cycles
• Extinction ratios
• Inverse return-to-zero
• Long distance transmission
• Modulation formats
• Phase information
• Self-phase
• Single channels

A novel scheme to generate inverse return-to-zero-differential 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-differential quadrature phase-shift-keying (ASK-DQPSK) in a 40 Gb/s single channel long distance transmission by simulation. Results show that IRZ-DQPSK signal offers much better performance against SPM.

• 出版日期2010
• 单位西安电子科技大学