光纤交叉相位调制

Key words ： Dense Wavelength Division Multiplexing; Cross phase modulation; Dispersion management; Wavelength converter 关键词
密集波分复用系统 交叉相位调制 色散管理 波长转换器
尽管交叉相位调制对系统性能有较大影 响，由于其非线性效应的瞬态响应 特性，在高速率全光信号处理方面它却 有其独特的用处。
A kind of wavelength converter based on XPM in dispersion shifted fiber(DSF) is studied in chapter 4, where the critical parameters and their influence on the performance of the wavelength converter are studied. 本文第四章研究了基于色散位移光纤中交叉 相位调制效应的波长转换器，得到了这种波 长转换器的一些关键参数及这些参数对波长 转换器性能的影响。
Although XPM can cause system performance degradation, it finds significant applications in all-optical high speed signal processing, since its response time is very short.
本文主要研究密集波分复用系统中的一种重 要的非线性效应——交叉相位调制对系统性 能的影响及减小其影响的方法，并研究基于 光纤中交叉相位调制的波长转换器。
First the commonly used algorithms — Split-step Fourier Method and its enhancement are introduced, as well as the simulation platform mainly used in this work — VPITransmissionmaker by VPI (With its former name PTDS, Photonic Transmission Design Suite).本文首先介绍了 光纤通信系统的仿真算法――分步傅立叶方 法及其改进形式，并介绍了本文中主要使用 的仿真平台：VPI 公司的 VPITransmissionmaker （原名 PTDS，Photonic Transmission Design Suite）。
ቤተ መጻሕፍቲ ባይዱ
With the increase of the input power and the reduction of the channel separation, nonlinear effects, which has been ignored in the low-bit rate linear systems, has distinguished itself and can not be neglected any more. 入纤功率的增加和信道间隔的减小都导 致了以前通常被忽略的非线性效应凸现 出来，并成为光纤通信容量进一步增长 的限制。
Then the optimal design of a single 40Gbps system and the influence of the dispersion compensation on systems are given. 在第二章研究了单信道 40Gbps 光纤通信系统的优化设计方案及色散补 偿方案对系统性能的影响。
This work mainly studies the influence of cross phase modulation (XPM) on DWDM systems and schemes to suppress the influence. In addition, all-optical wavelength converter based on XPM in optical fiber is studied.
The fiber-optic systems are developing into wide-band fiber-optic communication systems with huge capacity. As the most widely used method in the backbone communication networks, dense wavelength division multiplexing (DWDM) technology has made remarkable progress. 光纤通信系统正在向宽带、大容量的方向发 展。密集波分复用技术作为目前 干线光纤通信应用的最广泛的方式，也得到 了长足的发展。