发明名称 |
System and method for code division multiplexed optical communication |
摘要 |
A system for optical communication (2a) forms a family of orthogonal optical codes modulated by a data stream. The orthogonal codes are formed by creating a stream of evenly spaced-apart pulses using a pulse spreader circuit and modulating the pulses in amplitude and/or phase to form a family of orthogonal optical code words, each representing a symbol. A spreader calibration circuit is used to ensure accurate timing and modulation. Each code word is further modulated by a predetermined number of data bits. The data modulation scheme splits a code word into H and V components, and further processes the components prior to modulation with data, followed by recombining with a polarization beam combiner. The data-modulated code word is then sent, along with others to receiver. The received signal is detected and demodulated with the help of a symbol synchronization unit which establishes the beginning and end of the code words. A polarization mode distortion compensator (275) at the receiver cooperates with a state of polarization compensator at the transmitter to mitigate polarization distortion in the fiber. |
申请公布号 |
AU9643001(A) |
申请公布日期 |
2002.04.08 |
申请号 |
AU20010096430 |
申请日期 |
2001.09.26 |
申请人 |
CELIGHT, INC. |
发明人 |
MICHAEL TSEYTLIN;ISAAC SHPANTZER;YAAKOV ACHIAM;AVIV SALAMON;ISRAEL SMILANSKI;CHARLES SCIABARRA;PETER FELDMANN;ALPER DEMIR;PETER KINGET;NAGENDRA KRISHNAPURA;JAIJEET ROYCHOWDHURY;JACOB KHURGIN;JOSEPH SCHWARZWALDER;OLGA RITTERBUSH;GIOULANG (ERIC) LI;PAK SHING CHO;YEHOUDA MEIMAN |
分类号 |
H04B10/2569;H04B10/50;H04B10/508;H04J11/00;H04J13/00;H04J14/00;H04J14/02;H04J14/04;H04J14/06 |
主分类号 |
H04B10/2569 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|