Realization of three notch bands in UWB bandpass filter based on stimulated Brillouin scattering

Qi Zhang, Jie Zhang, Qiang Li, Yubing Wang, Wei Dong and Xindong Zhang

Journal of Electromagnetic Waves and Applications, 2019, vol. 33, issue 2, 215-225

Abstract: An Ultra-wideband (UWB) bandpass filter with three notch bands based on multi-tone waveform and Stimulated Brillouin scattering (SBS) is proposed and demonstrated. The phase modulation (PM) and tunable optical bandpass filter (TOBF) of the system are used to implement a single bandpass filter. The SBS attenuation of the multi-pump generates three notch bands and the proposed filter can efficiently reduce the interference from undesired signals at 3.5 GHz in WiMAX, 5.7 GHz in WLAN and 8 GHz in satellite. The rejection ratio of notch bands can be optimized to 36 dB, 38 dB and 35 dB.

Date: 2019
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DOI: 10.1080/09205071.2018.1536563

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