OPTICAL RECEIVER HAVING A DIGITAL CHROMATIC-DISPER

专利名称：OPTICAL RECEIVER HAVING A DIGITAL

CHROMATIC-DISPERSION COMPENSATORBASED ON REAL-VALUED ARITHMETIC

发明人：Sebastian A. Randel申请号：US14200506申请日：20140307

公开号：US20150256267A1公开日：20150910

专利附图：

摘要：An optical receiver comprising an optical-to-electrical converter and a digitalprocessor having first and second equalizer stages. The optical-to-electrical converter is

configured to mix an optical input signal and an optical reference signal to generate aplurality of electrical digital measures of the optical input signal. The digital processor isconfigured to process the electrical digital measures to recover the data carried by theoptical input signal. The first equalizer stage in the digital processor is configured toperform chromatic-dispersion-compensation processing in a manner that does not mixdifferent electrical digital measures prior to signal-equalization processing in the secondequalizer stage, which enables the first equalizer stage to operate using real-valuedarithmetic. These characteristics of the first equalizer stage enable the second equalizerstage to more-effectively mitigate signal impairments for signals received through CD-impaired optical-transport links because various orthogonality-degrading effects cannow be tracked and compensated more accurately therein.

申请人：Alcatel-Lucent USA Inc.

地址：Murray Hill NJ US

国籍：US

更多信息请下载全文后查看