Injection-Locked Gain-Switched Comb Source for Radio Astronomy Local Oscillator

被引：0

作者：

Shillue, Bill ^{[1
]}

Smyth, Frank ^{[2
]}

Jacques, Cluistophe ^{[1
]}

Savage, Lacee ^{[1
,3
]}

Vaselaar, Dustin ^{[1
]}

Muehlberg, Jim ^{[1
]}

Castro, Jason ^{[1
]}

机构：

[1] Natl Radio Astron Observ, Cent Dev Lab, Charlottesville, VA 22903 USA

[2] Pilot Photon, Dublin, Ireland

[3] Boeing BDS, Oklahoma City, OK USA

来源：

2024 INTERNATIONAL TOPICAL MEETING ON MICROWAVE PHOTONICS, MWP 2024 | 2024年

关键词：

photonic; local oscillator; radio astronomy; frequency comb; phase noise; gain switching;

D O I：

10.1109/MWP62612.2024.10736218

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：

An injection-locked gain-switched optical frequency comb source is investigated as a reference source for radio astronomy. The Atacama Large Millimeter/Submillimeter Array (ALMA) is a 66-antenna synthesis array for millimeter and submillimeter radio astronomy with sky frequencies from 33-950 GHz. Existing ALMA systems including receivers, digitizers, and correlator have planned upgrades after more than ten years of astronomical observing. This investigation envisages a future upgrade of the millimeter wave local oscillator system by providing the frequency transfer of the LO reference frequency from the central building to the antennas using a frequency comb. We directly compare the resulting LO phase noise to that of the existing installation.

引用

页数：4

共 21 条

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