We demonstrate optical true time delays using wavelength conversion coupled with chromatic dispersion. Using offset pumps, < 1 dB magnitude response fluctuations over ~40 GHz of bandwidth is achieved. Calculated linear frequency-modulated impulse response maintains a <-32 dB peak-to-sidelobe-ratio.
© 2011 OSA
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(280.5110) Remote sensing and sensors : Phased-array radar
(060.5625) Fiber optics and optical communications : Radio frequency photonics
O. F. Yilmaz, L. Yaron, S. Khaleghi, M. Chitgarha, M. Tur, and A. Willner, "True Time Delays using Conversion/Dispersion with Flat Magnitude Response for Wideband Analog RF Signals," in 37th European Conference and Exposition on Optical Communications, OSA Technical Digest (CD) (Optical Society of America, 2011), paper Mo.1.A.6.
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