发明名称 |
Upgraded optical communication system with increased transmission capacity and method |
摘要 |
A method for upgrading a wavelength division multiplex (WDM) optical communication system includes replacing an installed transmitter operable to transmit a data stream at a defined bit rate with a return-to-zero M-ary phased shift keying (RZ-mPSK) transmitter operable to transmit the data stream at the defined bit rate and at least one other data stream at the defined bit rate together in an RZ-mPSK signal having a combined bit rate at least double the defined bit rate and a symbol rate equal to the defined bit rate. An installed receiver operable to receive the data stream at the defined bit rate is replaced with an RZ-mPSK receiver operable to recover the data stream at the defined bit rate and the at least one other data stream at the defined bit rate from the RZ-mPSK signal.
|
申请公布号 |
US7593646(B2) |
申请公布日期 |
2009.09.22 |
申请号 |
US20080332755 |
申请日期 |
2008.12.11 |
申请人 |
FUJITSU LIMITED |
发明人 |
VASSILIEVA OLGA I.;HOSHIDA TAKESHI |
分类号 |
H04B10/04;H04B10/155;H04J14/02;H04J14/06 |
主分类号 |
H04B10/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|