25 March 2004 Microphotonic interference mitigation filter for radio astronomy telescopes
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Abstract
MicroPhotonic broadband RF signal processors utilize the capability of photons to perform true-time delay processing at very low loss that is unattainable by conventional electronic methods. In this paper, we present a novel MicroPhotonic interference mitigation filter architecture that utilises a CMOS Si photoreceiver/VCSEL array in conjunction with a true-time-delay multi-cavity optical substrate to realise an adaptive transversal RF processor with arbitrary response. Results show that the proposed MicroPhotonic structure can synthesize adaptive interference mitigation with a shape factor (ratio of the -40dB bandwidth to the -3dB bandwidth) as low as 2 and passband ripples less than 0.25dB.
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Kamal Alameh, Abdesselam Bouzerdoum, Kamran Eshraghian, Selam Ahderom, Mehrdad Raisi, Xiaoli Zhao, Rong Zheng, Zhenglin Wang, "Microphotonic interference mitigation filter for radio astronomy telescopes", Proc. SPIE 5277, Photonics: Design, Technology, and Packaging, (25 March 2004); doi: 10.1117/12.522868; https://doi.org/10.1117/12.522868
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