Adaptive non-uniform photonic time stretch for blind RF signal detection with compressed time-bandwidth product

Mididoddi, Chaitanya K and Wang, Chao (2017) Adaptive non-uniform photonic time stretch for blind RF signal detection with compressed time-bandwidth product. Optics Communications, 396 . pp. 221-227. ISSN 0030-4018. (doi:https://doi.org/10.1016/j.optcom.2017.03.052) (Full text available)

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http://dx.doi.org/10.1016/j.optcom.2017.03.052

Abstract

Photonic time stretch significantly extends the effective bandwidth of existing analog-to-digital convertors by slowing down the input high-speed RF signals. Non-uniform photonic time stretch further enables time bandwidth product reduction in RF signal detection by selectively stretching high-frequency features more. However, it requires the prior knowledge of spectral-temporal distribution of the input RF signal and has to reconfigure the time stretch filter for different RF input signals. Here we propose for the first time an adaptive non-uniform photonic time stretch method based on microwave photonics pre-stretching that achieves blind detection of high-speed RF signals with reduced time bandwidth product. Non-uniform photonic time stretch using both quadratic and cubic group delay response has been demonstrated and time bandwidth product compression ratios of 72% and 56% have been achieved respectively.

Item Type: Article
Uncontrolled keywords: Analog to digital conversion, data compression, dispersion, microwave photonics, photonic time stretch, time bandwidth product
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101 Telecommunications > TK5103.59 Optical communications, Fibre-optics
Divisions: Faculties > Sciences > School of Engineering and Digital Arts > Broadband & Wireless Communications
Depositing User: Chao Wang
Date Deposited: 24 Mar 2017 22:33 UTC
Last Modified: 01 Apr 2017 15:36 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/61044 (The current URI for this page, for reference purposes)
Wang, Chao: https://orcid.org/0000-0002-0454-8079
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