公开(公告)号：US06583905B1

公开(公告)日：2003-06-24

申请号：US09315265

申请日：1999-05-20

申请人： Gainluca Bonato ,  Mauro Macchi ,  Paolo Ottolenghi

发明人： Gainluca Bonato ,  Mauro Macchi ,  Paolo Ottolenghi

IPC分类号： H04B1000

CPC分类号： H04B10/2519 ,  H04B10/25137 ,  H04B10/255 ,  H04B2210/252

摘要： An optical transmission system and method for reducing non-linear distortion caused by the interaction of Self-Phase Modulation and Group Velocity Dispersion is disclosed. An optical link includes a transmitter for providing signals at a first optical wavelength, a transponder for converting the first optical wavelength to a second optical wavelength, a plurality of spans of optical transmission fiber and optical fiber amplifiers, a dispersion compensating device, and a receiver. The system operates at a relatively high input power level. The transponder includes a device for smoothing edges of the rise and fall times of optical pulses, such as an electrical attenuator and low pass filter, so that sharp-edged pulses received from the transmitter are transformed to a Gaussian shape. A dispersion compensating device, such as an optical fiber grating, also helps to improve the bit error rate as a function of receiver sensitivity despite an overall link length less than 600 km.

摘要翻译： 公开了一种用于减少由自相位调制和组速度色散相互作用引起的非线性失真的光传输系统和方法。 光链路包括用于以第一光波长提供信号的发射机，用于将第一光波长转换为第二光波长的转发器，多个光传输光纤和光纤放大器的跨度，色散补偿装置和接收器 。 该系统以较高的输入功率电平工作。 应答器包括用于平滑光脉冲的上升和下降时间的边缘的装置，例如电衰减器和低通滤波器，使得从发射器接收的尖锐脉冲变换为高斯形状。 诸如光纤光栅之类的色散补偿装置也有助于提高作为接收机灵敏度的函数的误码率，尽管总长度小于600公里。