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1·Utilizing phase modulator and dispersion compensation fiber (DCF) link, a non-return-zero (NRZ) data format is converted to return-zero (RZ) data format with tunable duty ratio.

提出了利用相位调制器和色散补偿光纤(DCF)把非归零(NRZ)码信号转换成为占空比可调的归零(RZ)码信号的方案。

2·Non – Return to Zero(recording)?

不归零制（记录） NRZ?。

3·A format conversion from a non-return-to-zero (NRZ) signal to return-to-zero (RZ) signal is presented based on four-wave mixing (FWM) and cross-phase modulation (XPM) in a silicon optical waveguide.

基于硅光波导的四波混频(FWM)和交叉相位调制(XPM)效应，提出非归零码(NRZ)到归零码(RZ)的光调制格式转换。

4·Pattern conversion is the key technology for all-optical clock recovery from non-return-to-zero (NRZ) signal.

码型转换是实现非归零(NRZ)信号全光时钟恢复的关键技术。

5·The MZM is driven by a non-return-to-zero (NRZ) data sequence and biased at the nonlinear point to generate edge-triggered pulses.

利用双输出口调制器典型的互补输出特性，通过偏置调制器于非线性传输点，可得到一对由NRZ序列边沿触发的明暗脉冲。