A Radio-Frequency-over-Fiber link for large-array radio astronomy applications
arXiv:1308.5481 · doi:10.1088/1748-0221/8/10/T10003
Abstract
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
arXiv comment17 pages, 13 figures; submitted to Journal of Instrumentation (JINST). This preprint is under review
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