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12 December 2018 Tunable dual-bandpass microwave photonic filter based on a single broadband light source
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Proceedings Volume 10849, Fiber Optic Sensing and Optical Communication; 108490H (2018) https://doi.org/10.1117/12.2504145
Event: International Symposium on Optoelectronic Technology and Application 2018, 2018, Beijing, China
Abstract
In this paper, a tunable dual-bandpass microwave photonic filter (MPF) based on a single broadband light source (BBS) has been proposed and experimentally demonstrated. By cascading two chirped fiber Bragg gratings (CFBG) with different reflection bandwidth and chirp parameter, the different delay of the modulated light signal in the system is introduced and consequently, a MPF with two different passbands can be realized. Two different passbands with the frequency of 6.75 GHz and 16.01 GHz is obtained in the experiment. By changing the free spectral range (FSR) of the Mach Zehnder interferometer (MZI) through an optical tunable delay line (OTDL), the central frequency of the two passbands can be changed. The dual-bandpass MPF presented in this paper is easy to implement and has good tunability and stability.
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Biao Zhao, Pengfei Du, Jianghai Wo, Wenshan Cong, Junkai Zhang, and Lan Yu "Tunable dual-bandpass microwave photonic filter based on a single broadband light source", Proc. SPIE 10849, Fiber Optic Sensing and Optical Communication, 108490H (12 December 2018); https://doi.org/10.1117/12.2504145
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