Feed-forward phase and frequency estimation in coherent digital and analog photonic links using digital signal processing

被引：0

作者：

Leven, Andreas ^{[1
]}

Kaneda, Noriaki ^{[1
]}

Koc, Ut-Va ^{[1
]}

Chen, Y. K. ^{[1
]}

机构：

[1] Bell Labs, Murray Hill, NJ 07974 USA

来源：

2007 IEEE/MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST, VOLS 1-6 | 2007年

关键词：

optical communication; coherent detection; frequency estimation;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

One of the biggest obstacles in coherent optical communication used to be the synchronization of transmit and local oscillator (LO) laser. Especially for homodyne systems, the need for optical phase-locked loops posed stringed requirements on the fine-width of transmit and LO lasers. To overcome these requirements, digital signal processing techniques have been proposed, which can be used to synchronize a free-running LO laser with the received optical signal in the digital domain. Only recently, advances in digital signal processor (DSP) technology allowed for lab demonstration of DSP-aided coherent optical receivers. In this paper, we will review some of the techniques for realizing robust coherent receivers with free-running LO lasers utilizing digital signal processing techniques. We will consider digital as well as analog links.

引用

页码：1506 / 1509

页数：4

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