A 100-GHz-tunable photonic millimeter wave synthesizer for the Atacama Large Millimeter Array radiotelescope

被引：37

作者：

Cliche, Jean-Francois ^{[1
]}

Shillue, Bill ^{[2
]}

Tetu, Michel ^{[1
]}

Poulin, Michel ^{[1
]}

机构：

[1] TeraXion, 2716 Rue Einstein, Quebec City, PQ G1P 4S8, Canada

[2] Natl Radio Astron Observ, Charlottesville, VA 22903 USA

来源：

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

关键词：

millimeter wave generation; optical phase locked loops; phase noise; semiconductor lasers;

D O I：

10.1109/MWSYM.2007.380442

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：

We propose a broadband photonic millimeter wave synthesizer based on the optical phase locking of telecom-grade DFB semiconductor lasers. A mathematical model of the OPLL shows that the frequency noise profile of these lasers is such that millimeter wave beat notes with residual phase noise levels of 2x10(-5) rad(2) can be achieved with loop path lengths as long as 60 cm. Experiments on a simplified proof-of-concept unit validate this model. The synthesizer is tunable over more than 100 GHz by changing the laser junction temperature. The photonic millimeter wave synthesizer will be used to generate and distribute the LO reference signal of the Atacama Large Millimeter Array radiotelescope.

引用

页码：349 / +

页数：2

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