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Chin. Opt. Lett.
 Home  List of Issues    Issue 11 , Vol. 15 , 2017    10.3788/COL201715.110603


Cascaded fiber Sagnac loop-based microwave photonic multiband bandpass filter with a selectable passband frequency
Jun Gu1, Fei Wang2, Youxi Lu1, Mengmeng Peng1, Lun Shi2, Chang-hee Lee3
1 School of Science, [Chongqing University of Technology], Chongqing 400054, China
2 School of Electrical and Electronic Engineering, [Chongqing University of Technology], Chongqing 400054, China
3 School of Electrical Engineering, [Korea Advanced Institute of Science and Technology (KAIST)], Daejeon 34141, South Korea

Chin. Opt. Lett., 2017, 15(11): pp.110603

DOI:10.3788/COL201715.110603
Topic:Fiber optics and optical communication
Keywords(OCIS Code): 060.5625  070.2615  200.4740  

Abstract
A passband frequency-electable microwave photonic multiband bandpass filter based on a cascaded fiber Sagnac loop is presented and experimentally demonstrated. A broadband light is sliced by the cascaded fiber Sagnac loop, which serves as a spectrum slicer. After broadband light passes through the spectrum slicer, the sliced broadband light will have the varied periodical spectral characteristics that will cause a transmitted spectral distribution with uniform or multiple periods, then will be modulated by an optical phase modulator and delayed by a dispersive medium. Therefore, a frequency-band-selectable microwave photonic multiband bandpass filter with a suppressed baseband is achieved that can be switched between the single-passband, dual-passband, and triple-passband state. The presented filter exhibits a maximal out-of-band rejection ratio of about 30 dB.

Copyright: © 2003-2012 . This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Received:2017/8/3
Accepted:2017/9/8
Posted online:2017/9/22

Get Citation: Jun Gu, Fei Wang, Youxi Lu, Mengmeng Peng, Lun Shi, Chang-hee Lee, "Cascaded fiber Sagnac loop-based microwave photonic multiband bandpass filter with a selectable passband frequency," Chin. Opt. Lett. 15(11), 110603(2017)

Note: This work was supported by the National Natural Science Foundation of China (Nos. 61575034, 11474233, and 61302026), the Key Project of the Natural Science Foundation Project of Chongqing (No. cstc2013jjB40002), the Commission of Education of Chongqing City of China (No. KJ1400942), the Chongqing Research Program of Basic Research and Frontier technology (No. cstc2015jcyjA40035), and the Chongqing University of Technology Graduate Innovation Fund (No. YCX2016235).



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