发明名称 |
METHOD AND APPARATUS FOR MEASURING FREQUENCY-RESOLVED STATESOF POLARIZATION OF A WORKING OPTICAL CHANNEL USING POLARIZATION-SCRAMBLED HETERODYNING |
摘要 |
An apparatus for measuring a set of frequency-resolved states of polarizatio n (SOP) of an optical signal includes a local oscillator (LO), a polarization scrambler, a coupler for mixing the polarization-scrambled signal with the optical signal to produce a heterodyned signal with a radio frequency (RF) component, and an analyzer for passing a fixed polarization component and resolving the polarization and frequency from the RF component. The apparatus is used for measuring, monitoring or compensating t he polarization mode dispersion (PMD) in a working channel of an optical telecommunication system. A method for measuring frequency-resolved SOP of an optical signal includes tuning and polarization-scrambling a local oscillator (LO), mixing the scrambled LO with the optical signal, and resolving the RF signal in frequency and polarization. T he method is applied to measure and monitor PMD in a working optical channel, and to dynamically compensate for the PMD.
|
申请公布号 |
CA2504442(C) |
申请公布日期 |
2010.02.02 |
申请号 |
CA20052504442 |
申请日期 |
2005.04.05 |
申请人 |
AT&T CORP. |
发明人 |
BRODSKY, MIKHAIL;MAGILL, PETER;FRIGO, NICHOLAS J.;BORODITSKY, MIKHAIL |
分类号 |
H04B10/04;H04B10/08;G01J4/00;H04B10/02;H04B10/06;H04B10/142;H04B10/148;H04B10/152;H04B10/18 |
主分类号 |
H04B10/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|