Amplitude regeneration of NRZ-DPSK signal with a feed-forward control circuit

作者：Kunigita N; Takamiya H; Fukutoku M; Inoue K^*

来源：Optical Fiber Technology, 2013, 19(1): 52-54.

DOI：10.1016/j.yofte.2012.10.003

• Optical communication
• DPSK
• Regenerator

An optical-and-electrical hybrid-type amplitude regenerator for an NRZ-DPSK signal suffering from optical amplifier noise is described. The system is a feed-forward control circuit composed of a coupler, a photo detector, and an intensity modulator, and works to suppress intensity fluctuations in a DPSK signal while preserving phase information. A schematic explanation of how the DPSK transmission performance is improved with intensity noise suppression during transmission is presented, and an experiment to demonstrate its effect is conducted.

• 出版日期2013-1