All-optical regeneration of DQPSK/QPSK signals based on phase-sensitive amplification

作者：Zheng Zheng; An Lin^*; Li Zheng; Zhao Xin; Liu Xiang

来源：Optics Communications, 2008, 281(10): 2755-2759.

DOI：10.1016/j.optcom.2008.01.046

• all-optical regeneration
• quadrature phase-shift keying (QPSK)
• phase-sensitive amplifier (PSA)
• Mach-Zehnder interferometer (MZI)
• nonlinear optical fiber

An all-optical regeneration scheme for DQPSK and QPSK signals using phase-sensitive amplifiers (PSAs) is studied and its effectiveness is investigated through numerical simulations. By leveraging the ability of PSAs to provide phase and amplitude regenerative amplification, we show significant simultaneous suppression of both phase and amplitude noises of (D)QPSK signals under optimized conditions. The reduction in the phase noise variance of a noise-corrupted DQPSK signal obtained by one such regenerative amplification can be as large as similar to 5.5 folds, showing its good potential for distributed optical regeneration of (D)QPSK signals.

• 出版日期2008-5-15
• 单位北京航空航天大学