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    • 90. 发明申请
    • Optical Communication System and Method for Generating Dark Return-to-Zero and DWDM Optical MM-Wave Generation for ROF Downstream Link Using Optical Phase Modulator and Optical Interleaver
    • 用于通过光相位调制器和光交错器产生ROF下行链路的深度归零和DWDM光学MM波生成的光通信系统和方法
    • US20070166054A1
    • 2007-07-19
    • US11621765
    • 2007-01-10
    • Jianjun YuLei XuPhilip JiTing Wang
    • Jianjun YuLei XuPhilip JiTing Wang
    • H04B10/04
    • H04B10/508H04B10/2575H04B10/505H04J14/02H04J14/0256
    • A method of generating a dark-RZ pulse in an optical communications system with a dual-arm modulator by setting a direct current bias on the modulator to a specific value such that an output optical power from the modulator achieves a maximum value when the RF signals on the first and second arms of the modulator are off and maintaining the direct current bias at the specific value and applying RF signals to the first and second arms of the modulator and delaying one of the RF signals applied to one of the first and second arms relative to the other of the RF signals such that a dark-RZ pulse is generated with a duty cycle based on the delay. Another aspect of the invention provides a method for generating dense wave division multiplexing (DWDM) optical mm-waves in an optical transmission system by phase modulated DWDM optical signal and applying the phase modulated DWDM optical signal to an input port of an optical interleaver, the optical interleaver having a specified bandwidth to suppress the optical carriers and convert the DWDM optical signal to DWDM optical mm-waves; and amplifying the DWDM optical mm-waves and transmitting the DWDM optical mm-waves over single mode fiber (SMF).
    • 一种在具有双臂调制器的光通信系统中通过将调制器上的直流偏置设置为特定值来产生暗RZ脉冲的方法,使得来自调制器的输出光功率在RF信号 在调制器的第一和第二臂处关闭并将直流偏压保持在特定值并且将RF信号施加到调制器的第一和第二臂并且延迟施加到第一和第二臂之一的RF信号之一 相对于RF信号中的另一个,使得以基于延迟的占空比产生暗RZ脉冲。 本发明的另一方面提供了一种通过相位调制DWDM光信号在光传输系统中产生密集波分复用(DWDM)光学毫米波的方法,并将相位调制的DWDM光信号应用于光交织器的输入端口, 具有指定带宽的光交错器以抑制光载波并将DWDM光信号转换为DWDM光学毫米波; 并放大DWDM光学毫米波,并通过单模光纤(SMF)传输DWDM光学毫米波。