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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 37, Iss. 4 — Feb. 15, 2012
  • pp: 608–610

Programmable multiple true-time-delay elements based on a Fourier-domain optical processor

Xiaoke Yi, Liwei Li, Thomas X. H. Huang, and Robert A. Minasian  »View Author Affiliations


Optics Letters, Vol. 37, Issue 4, pp. 608-610 (2012)
http://dx.doi.org/10.1364/OL.37.000608


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Abstract

A new technique to realize an array of multiple true-time-delay elements, which can be independently and continuously tuned, is reported. It is based on a WDM parallel signal processing approach in conjunction with a diffraction-based Fourier-domain optical signal processor. Programmable linear optical phase transfer functions are realized to obtain different electrical true-time delays. The technique can scale to a large number of wideband true-time-delay lines, with continuously tunable programmable delay. Results demonstrate multiple true-time-delay elements with independent tuning control and verify the concept by tuning the free spectral range of a microwave photonic notch filter. To our best knowledge, this is the first demonstration of multiple independently controllable true-time-delay lines for microwave photonic systems.

© 2012 Optical Society of America

OCIS Codes
(060.2360) Fiber optics and optical communications : Fiber optics links and subsystems
(070.1170) Fourier optics and signal processing : Analog optical signal processing
(350.4010) Other areas of optics : Microwaves
(060.5625) Fiber optics and optical communications : Radio frequency photonics

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: November 17, 2011
Manuscript Accepted: December 21, 2011
Published: February 9, 2012

Virtual Issues
April 18, 2012 Spotlight on Optics

Citation
Xiaoke Yi, Liwei Li, Thomas X. H. Huang, and Robert A. Minasian, "Programmable multiple true-time-delay elements based on a Fourier-domain optical processor," Opt. Lett. 37, 608-610 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-4-608


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