High-resolution microwave frequency measurement based on temporal channelization using a mode-locked laser

Wang, Chao and Yao, Jianping (2012) High-resolution microwave frequency measurement based on temporal channelization using a mode-locked laser. In: 2012 IEEE/MTT-S International Microwave Symposium Digest. IEEE pp. 1-3. ISBN 9781467310857. (doi:https://doi.org/10.1109/MWSYM.2012.6259440) (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)

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. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1109/MWSYM.2012.6259440

Abstract

High resolution microwave frequency measurement based on temporal channelization using a mode-locked laser is proposed and demonstrated. In the proposed system, a highly chirped optical pulse is modulated by a microwave signal with its frequency to be measured. The temporal microwave waveform is then mapped to the spectral domain thanks to dispersive Fourier transformation in a dispersive fiber. An optical channelizer is then employed to filter the spectrum, which is equivalent to performing temporal sampling of the temporal waveform. The microwave signal can then be reconstructed and its spectral distribution can be analyzed. Our method features greatly improved measurement resolution, which is more than two orders of magnitude higher than that based on the direct use of an optical channelizer. To evaluate the proposed technique, frequency measurement of a single-tone and a two-tone microwave signals is demonstrated. A measurement resolution as high as 200 MHz is achieved using an optical channelizer with 25-GHz channel spacing.

Item Type: Conference or workshop item (Paper)
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: 31 Oct 2013 14:23 UTC
Last Modified: 04 Nov 2013 11:25 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/35891 (The current URI for this page, for reference purposes)
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