Amplitude regenerative characteristics of RZ-DPSK wavelength converter based on four-wave mixing in SOA

被引：12

作者：

Department of Electronic Engineering, Tsinghua University, Beijing 100084, China ^{[1
]}

机构：

[1] Department of Electronic Engineering, Tsinghua University

来源：

Chin. Phys. Lett. | 2008年 / 5卷 / 1697-1700期

关键词：

D O I：

10.1088/0256-307X/25/5/048

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学科分类号：

摘要：

We investigate the phase-preserving amplitude regenerative characteristics of the return-to-zero (RZ) differential-phase-shift-keying (DPSK) wavelength conversion based on four-wave mixing (FWM) in a semiconductor optical amplifier (SOA). The Q-factor and the optical signal-to-noise ratio (OSNR) before and after conversion are experimentally obtained and analysed in different input noise power levels. In both the continuous-wave and synchronous clock pumping cases, we find that there is amplitude clamping in the FWM conversion due to the gain saturation of SOA, which can suppress the amplitude fluctuation of the converted DPSK signal before and after demodulation. We have achieved 2-dB Q penalty improvement in our experiment demonstration of 10Gbit/s RZ-DPSK signal with OSNR lower than 19dB. © 2008 Chinese Physical Society and IOP Publishing Ltd.

引用

页码：1697 / 1700

页数：3