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, Kamal Alameh, Abdesselam Bouzerdoum, Abdesselam Bouzerdoum, Kamran Eshraghian, Kamran Eshraghian, Selam Ahderom, Selam Ahderom, Mehrdad Raisi, Mehrdad Raisi, Xiaoli Zhao, Xiaoli Zhao, Rong Zheng, Rong Zheng, Zhenglin Wang, 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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