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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 46, Iss. 7 — Mar. 1, 2007
  • pp: 1032–1039

Compact tunable microwave filter using retroreflective acousto-optic filtering and delay controls

Nabeel A. Riza and Farzan N. Ghauri  »View Author Affiliations


Applied Optics, Vol. 46, Issue 7, pp. 1032-1039 (2007)
http://dx.doi.org/10.1364/AO.46.001032


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Abstract

Programmable broadband rf filters are demonstrated using a compact retroreflective optical design with an acousto-optic tunable filter and a chirped fiber Bragg grating. This design enables fast 34 μs domain analog-mode control of rf filter time delays and weights. Two proof-of-concept filters are demonstrated including a two-tap notch filter with > 35   dB notch depth and a four-tap bandpass filter. Both filters have 2–8 GHz tunability and a 34 μ s reset time.

© 2007 Optical Society of America

OCIS Codes
(070.1060) Fourier optics and signal processing : Acousto-optical signal processing
(070.1170) Fourier optics and signal processing : Analog optical signal processing
(070.6020) Fourier optics and signal processing : Continuous optical signal processing

History
Original Manuscript: August 4, 2006
Revised Manuscript: October 2, 2006
Manuscript Accepted: October 19, 2006
Published: February 12, 2007

Citation
Nabeel A. Riza and Farzan N. Ghauri, "Compact tunable microwave filter using retroreflective acousto-optic filtering and delay controls," Appl. Opt. 46, 1032-1039 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-7-1032

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