Analysis of a true time delay photonic beamformer for tranmission of a linear frequency-modulated waveform

R. Rotman, O. Raz, M. Tur

Research output: Contribution to journalArticleAcademicpeer-review

28 Citations (Scopus)
82 Downloads (Pure)

Abstract

A generalized conversion matrix (GCM) and numerical analysis are used to study the distortions suffered by a linear frequency-modulated radio frequency (RF) pulse while propagating through photonic links to be used in wideband phased arrays. The analysis shows the effects of dispersion of all orders, coherent crosstalk and nonlinearity of the optical components on the RF pulse, and the high performance needed to achieve acceptable RF performance of the temporal (impulse) response. The effects of the electrical-to-optical (E/O) and optical-to-electrical (O/E) conversions are also considered. Using the GCM, the optical amplitude and phase fluctuations are converted into their RF counterparts, thereby reducing the optical problem into the well-understood RF domain. A photonic wavelength-controlled true delay device is experimentally shown to achieve good RF performance over a 4-GHz bandwidth, with predicted sidelobe levels below 30 dB.
Original languageEnglish
Pages (from-to)4026-4036
Number of pages10
JournalJournal of Lightwave Technology
Volume23
Issue number12
DOIs
Publication statusPublished - 2005

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