基于半导体光放大器和整形滤波器的40 Gb/s的归零正码波长变换研究

理论上分析了通过整形滤波器方法实现正码波长变换的原理,并讨论了滤波器带宽及偏移方向对正码脉冲效果的影响,解释了目前实验报道中多采用蓝移滤波方案的技术根由。在实验上利用半导体光放大器(SOA)和通带滤波器完成了40Gb/s的归零码波长变换实验,验证了理论分析的结构,证明了整形滤波器加半导体光放大器的方案可以实现正码的波长变换。这对于简化网络的设计,提高信号传输质量都有重要的意义。

Noninverted Wavelength Conversion for 40 Gb/s Return-to-Zero Signal Based on Semiconductor Optical Amplifier and Optical Bandpass Filter

Noninverted wavelength conversion based on semiconductor optical amplifier and optical bandpass filter is theoretically analyzed,and the effect of bandwidth and deviation direction of optical bandpass filter on noninverted wavelength conversion is discussed,which well explain the widely reported experimental results on blue-shifted wavelength conversion.The experiment of the 40Gb/s RZ signal wavelength conversion has been completed by the assistance of the SOA and bandpass filter,which demonstrates the result of theoretical analysis,and the feasibility of the noninverted wavelength conversion based on SOA and optical bandpass filter.The method of noninverted wavelength conversion is significant to simplify the network design and to improve the quality of the signal transmission.