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Photonics 2014, 1(4), 586-612; doi:10.3390/photonics1040586

Dispersive Fourier Transformation for Versatile Microwave Photonics Applications

School of Engineering and Digital Arts, University of Kent, Canterbury, Kent, CT2 7NT, UK
Received: 15 November 2014 / Revised: 12 December 2014 / Accepted: 12 December 2014 / Published: 18 December 2014
(This article belongs to the Special Issue Microwave Photonics)
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Abstract

Dispersive Fourier transformation (DFT) maps the broadband spectrum of an ultrashort optical pulse into a time stretched waveform with its intensity profile mirroring the spectrum using chromatic dispersion. Owing to its capability of continuous pulse-by-pulse spectroscopic measurement and manipulation, DFT has become an emerging technique for ultrafast signal generation and processing, and high-throughput real-time measurements, where the speed of traditional optical instruments falls short. In this paper, the principle and implementation methods of DFT are first introduced and the recent development in employing DFT technique for widespread microwave photonics applications are presented, with emphasis on real-time spectroscopy, microwave arbitrary waveform generation, and microwave spectrum sensing. Finally, possible future research directions for DFT-based microwave photonics techniques are discussed as well. View Full-Text
Keywords: dispersive Fourier transformation; microwave photonics; femtosecond lasers; dispersion; time stretch dispersive Fourier transformation; microwave photonics; femtosecond lasers; dispersion; time stretch
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Wang, C. Dispersive Fourier Transformation for Versatile Microwave Photonics Applications. Photonics 2014, 1, 586-612.

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