公开(公告)号：US20030198477A1

公开(公告)日：2003-10-23

申请号：US10348770

申请日：2003-01-23

Applicant: Communications Research Lab. Indep. Admin. Inst.

Inventor： Toshiaki Kuri ,  Kenichi Kitayama

IPC: H04B010/04

CPC classification number: H04B10/67 ,  H04B10/2575 ,  H04B2210/006

Abstract: A modulated optical signal processing method and apparatus optically convert an optical signal to an intermediate frequency band that simplifies electrical processing after optical detection, thereby increasing the optical reception sensitivity. Either single-mode light is modulated with a first radio wave overlaid with data, or a modulated optical signal is directly generated, and the optical carrier and optical sideband contained in that modulated optical signal are transmitted, the transmitted optical carrier and optical sideband are input and the input optical carrier and optical sideband are mixed with a radio wave of a predetermined frequency and a combination of an adjacent optical carrier and optical sideband that are closer together than the frequency of the first radiofrequency electrical signal is optically selected from among a frequency-converted or frequency-unconverted optical carrier and optical sideband thus obtained and an electrical signal is detected from this selected optical signal.

Abstract translation: 调制光信号处理方法和装置将光信号光学地转换为简化光检测后的电处理的中频带，从而提高光接收灵敏度。 单模光被以数据叠加的第一无线电波调制，或者直接产生调制的光信号，并且发送包含在该调制光信号中的光载波和光边带，输入的光载波和光边带被输入 并且将输入光载波和光边带与频率比第一射频电信号的频率更靠近的预定频率的无线电波和相邻的光载波和光边带的组合混合， 转换或频率未转换的光载波和光边带，并从该选择的光信号中检测出电信号。