发明名称 |
System and method for code divilsion multiplexed optical communication |
摘要 |
A system for optical communication 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 at the receiver cooperates with a state of polarization compensator at the transmitter to mitigate polarization distortion in the fiber.
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申请公布号 |
US2002145787(A1) |
申请公布日期 |
2002.10.10 |
申请号 |
US20010962243 |
申请日期 |
2001.09.26 |
申请人 |
SHPANTZER ISAAC;TSEYTLIN ISAAC;ACHIAM YAAKOV;SALAMON AVIV;SMILANSKI ISRAEL;RITTERBUSH OLGA;CHO PAK SHING;SCIABARRA CHARLES;KHURGIN JACOB;MEIMAN YEHOUDA;DEMIR ALPER;FELDMANN PETER;KINGET PETER;KRISHNAPURA NAGENDRA;ROYCHOWDHURY JAIJEET;SCHWARZWALDER JOSEPH;SCIABARRA CHARLES |
发明人 |
SHPANTZER ISAAC;TSEYTLIN ISAAC;ACHIAM YAAKOV;SALAMON AVIV;SMILANSKI ISRAEL;RITTERBUSH OLGA;CHO PAK SHING;SCIABARRA CHARLES;KHURGIN JACOB;MEIMAN YEHOUDA;DEMIR ALPER;FELDMANN PETER;KINGET PETER;KRISHNAPURA NAGENDRA;ROYCHOWDHURY JAIJEET;SCHWARZWALDER JOSEPH;SCIABARRA CHARLES |
分类号 |
H04B10/155;H04B10/18;H04J13/00;H04J14/00;H04J14/02;(IPC1-7):H04J14/08;H04B10/04 |
主分类号 |
H04B10/155 |
代理机构 |
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代理人 |
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主权项 |
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