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Photonic microwave filters with ultra-high noise rejection [Invited]

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摘要 As a key figure-of-merit for high-performance microwave filters, the out-of-band noise rejection is of critical importance in a wide range of applications. This paper overviews the significant advances in photonic microwave filters(PMFs) having ultra-high rejection ratios for out-of-band noise suppression over the last ten years.Typically, two types of PMFs, the bandpass and bandstop ones, are introduced with fundamental principles,detailed approaches, and then cutting-edge results for noise rejection. Ultra-high noise rejection ratios of ~80 d B and >60 dB have been demonstrated for single-passband and single-stopband PMFs, respectively, which are comparable with the state-of-the-art electronic filters operating in stringent conditions. These PMFs are also characterized by wide frequency coverage, low frequency-dependent loss, and strong immunity to electromagnetic interference due to the intrinsic features from the advanced photonics technology.
作者 邹喜华 李沛轩 潘炜 闫连山 Xihua Zou;Peixuan Li;Wei Pan;Lianshan Yan(不详)
出处 《中国光学快报:英文版》 SCIE EI CAS CSCD 2019年第3期12-17,共6页 Chinese Optics Letters
基金 the National Natural Science Foundation of China (No. 61775185) the Sichuan Science and Technology Program (No. 2018HH0002).
作者简介 Corresponding author:邹喜华,zouxihua@swjtu.edu.cn.
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