光纤技术产生超宽带脉冲信号仿真研究  

Simulated investigation of ultra-wideband pulse signal generation by fiber-optic technology

作　　者：杨春勇[1] 侯睿[2] 陈少平[1] 

机构地区：[1]中南民族大学电子信息工程学院,湖北武汉430074 [2]中南民族大学计算机科学学院,湖北武汉430074

出　　处：《光通信研究》2007年第6期31-33,共3页Study on Optical Communications

基　　金：中南民族大学自然科学基金资助项目(YZZ05009)

摘　　要：采用仿真方法研究在光纤传输过程中产生并分发超宽带脉冲信号。对系统频响特性的数值分析获知频率响应在低频段表现出带通滤波器特性,且中心波长越短,低频带宽越大。仿真12.5 Gbit/s伪随机序列传输特性表明,高斯脉冲通过系统后,时域上脉冲信号接近于FCC(美国联邦通信认证)的超宽带脉冲波形模板,频域上的信号频谱接近于FCC的频谱规范。Simulation technique is used to investigate the generation and distribution of Ultra-Wideband （UWB） pulse signals in fiber-optic transmissions. The numerical analysis of the system frequency response shows that it has the band-pass filter characteristics at lower frequency band and the shorter the central wavelength, the wider the lower frequency bandwidth. Transmission performance simulation for 12.5 Gbit/s pseudo-random sequence also shows that Gaussian pulse signals in time domain after fiber-optic transmission is close to FCC UWB pulse waveform template, while the signal spectrum in frequency domain to FCC spectrum specification.

关 键 词：光纤无线技术 超宽带 光纤传输 相位调制器 

分 类 号：TN929.11[电子电信—通信与信息系统]