A Nonuniformly Spaced Microwave Photonic Filter Using a Spatially Discrete Chirped FBG

Wang, Chao and Yao, Jianping (2013) A Nonuniformly Spaced Microwave Photonic Filter Using a Spatially Discrete Chirped FBG. IEEE Photonics Technology Letters, 25 (19). pp. 1889-1892. ISSN 1041-1135. (doi:https://doi.org/10.1109/LPT.2013.2279235) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
http://dx.doi.org/10.1109/LPT.2013.2279235

Abstract

We report an experimental demonstration of a nonuniformly spaced photonic microwave delay-line filter implemented using an incoherent broadband optical source and a spatially discrete chirped fiber Bragg grating (SD-CFBG). The SD-CFBG performs simultaneously three functions: 1) to slice the spectrum of the broadband optical source for generating the filter taps; 2) to provide nonuniform time delays; and 3) to control the weights of the filter taps. Since negative or complex coefficients are equivalently generated based on the nonuniform sampling, a filter with an arbitrary spectra response is achieved. To verify the effectiveness of the proposed method, a flat-top bandpass microwave filter with seven all-positive nonuniformly spaced taps at 12 GHz is experimentally demonstrated. The proposed method offers a cost-effective and easy-to-implement solution for photonic microwave filters having arbitrary frequency responses.

Item Type: Article
Subjects: T Technology
Divisions: Faculties > Sciences > School of Engineering and Digital Arts
Faculties > Sciences > School of Engineering and Digital Arts > Broadband & Wireless Communications
Depositing User: Tina Thompson
Date Deposited: 02 Dec 2013 15:39 UTC
Last Modified: 22 Oct 2014 11:34 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/37116 (The current URI for this page, for reference purposes)
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