发明公开
EP0967743A2 Method and apparatus for optical frequency demodulation of an optical signal using interferometry
审中-公开
用于通过干涉法来的光信号的光频率解调的方法和装置
- 专利标题： Method and apparatus for optical frequency demodulation of an optical signal using interferometry
- 专利标题（中）： 用于通过干涉法来的光信号的光频率解调的方法和装置
-
申请号： EP99304932.9申请日： 1999-06-23
-
公开(公告)号： EP0967743A2公开(公告)日： 1999-12-29
- 发明人: Kim, Kinhong , Richardson, Bruce
- 申请人： NORTEL NETWORKS CORPORATION
- 申请人地址： World Trade Center of Montreal 380 St. Antoine Street West 8TH FLOOR Montreal, Quebec H2Y 3Y4 CA
- 专利权人： NORTEL NETWORKS CORPORATION
- 当前专利权人： NORTEL NETWORKS CORPORATION
- 当前专利权人地址： World Trade Center of Montreal 380 St. Antoine Street West 8TH FLOOR Montreal, Quebec H2Y 3Y4 CA
- 代理机构： Bewley, Ewan Stuart
- 优先权： GB9813412 19980623
- 主分类号： H04B10/158
- IPC分类号： H04B10/158
摘要：
The present invention provides an improved optical frequency demodulation technique for extracting overhead information from an optical channel signal carrying both high bit rate payload and low rate overhead data. The invention makes use of asymmetrical Mach-Zehnder interferometry (AMZI) in an optical frequency demodulator to efficiently extract the overhead information from the optical channel signal by frequency discrimination without necessitating a complete demodulation of the optical channel signal. By comparison to existing demodulation schemes, the invention provides an all-optical low cost, high gain technique for recovering the overhead data which improves the payload signal-to-noise ratio and enhance performance.
公开/授权文献
信息查询
