True time delays using conversion/dispersion with flat magnitude response for wideband analog RF signals | Zendy

Ömer Yılmaz | Zendy; Lior Yaron | Zendy; Salman Khaleghi | Zendy; Mohammad Reza Chitgarha | Zendy; Moshe Tur | Zendy; Alan E. Willner | Zendy

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True time delays using conversion/dispersion with flat magnitude response for wideband analog RF signals

Author(s) -

Ömer Yılmaz,

Lior Yaron,

Salman Khaleghi,

Mohammad Reza Chitgarha,

Moshe Tur,

Alan E. Willner

Publication year - 2012

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.20.008219

Subject(s) - optics , wideband , bandwidth (computing) , wavelength , offset (computer science) , dispersion (optics) , physics , materials science , transfer function , telecommunications , electrical engineering , computer science , programming language , engineering

We demonstrate optical true time delays using wavelength conversion coupled with chromatic dispersion. The transfer function of the delay system is investigated, and it is shown that 3-dB bandwidth of the system can be increased over 40 GHz by using offset pumps. A flat magnitude response (<1 dB peak-peak, 0.2 dB RMS deviation) is achieved in the 1-30 GHz band. Calculated matched filter output to LFM pulses shows good performance, maintaining a > 30 dB peak-to-sidelobe-ratio. The effect of pump depletion during wavelength conversion is also investigated.

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