A Radio-Frequency-over-Fiber link for large-array radio astronomy applications
A Radio-Frequency-over-Fiber link for large-array radio astronomy applications
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DOI：
10.1088/1748-0221/8/10/t10003
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发表时间：
2013-08
影响因子：
1.3
通讯作者：
J. Mena;K. Bandura;J. Cliche;M. Dobbs;A. Gilbert;Q. Y. Tang
中科院分区：
文献类型：
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作者：
J. Mena;K. Bandura;J. Cliche;M. Dobbs;A. Gilbert;Q. Y. Tang
介绍了一种用于加拿大氢强度测绘实验（CHIME）的425-850 MHz光纤射频（RFoF）链路原型。该设计基于直接调制法布里-珀罗（FP）激光器，在环境温度下工作，使用单模光纤。对RFoF链路的动态性能、增益稳定性和相位稳定性进行了表征。在Dominion射电天体物理天文台为CHIME样机建造的双元件干涉仪上进行的测试表明，RFoF可以成功地用作CHIME望远镜和其他大型阵列射电天文学应用中模拟信号传输的经济有效解决方案。
A prototype 425-850 MHz Radio-Frequency-over-Fiber (RFoF) link for the Canadian Hydrogen Intensity Mapping Experiment (CHIME) is presented. The design is based on a directly modulated Fabry-Perot (FP) laser, operating at ambient temperature, and a single-mode fiber. The dynamic performance, gain stability, and phase stability of the RFoF link are characterized. Tests on a two-element interferometer built at the Dominion Radio Astrophysical Observatory for CHIME prototyping demonstrate that RFoF can be successfully used as a cost-effective solution for analog signal transport on the CHIME telescope and other large-array radio astronomy applications.