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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 35 — Dec. 10, 2010
  • pp: 6718–6725

Electronically controlled agile lens-based broadband variable photonic delay line for photonic and radio frequency signal processing

Nabeel A. Riza, Syed Azer Reza, and Philip J. Marraccini  »View Author Affiliations

Applied Optics, Vol. 49, Issue 35, pp. 6718-6725 (2010)

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To the best of our knowledge, proposed for the first time is the design of an optically broadband variable photonic delay line (VPDL) using an electronically controlled variable focus lens (ECVFL), mirror motion, and beam-conditioned free-space laser beam propagation. This loss-minimized fiber-coupled VPDL design using micro-optic components has the ability to simultaneously provide optical attenuation controls and analog-mode high-resolution (subpicoseconds) continuous delays over a moderate (e.g., < 5 ns ) range of time delays. An example VPDL design using a liquid-based ECVFL demonstrates up to a 1 ns time-delay range with > 10 dB optical attenuation controls. The proposed VPDL is deployed to demonstrate a two-tap RF notch filter with tuned notches at 854.04 and 855.19 MHz with 22.6 dB notch depth control via VPDL attenuation control operations. The proposed VPDL is useful in signal conditioning applications requiring fiber-coupled broadband light time delay and attenuation controls.

© 2010 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(230.0230) Optical devices : Optical devices
(350.4010) Other areas of optics : Microwaves
(060.5625) Fiber optics and optical communications : Radio frequency photonics

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: July 12, 2010
Revised Manuscript: October 20, 2010
Manuscript Accepted: October 22, 2010
Published: December 2, 2010

Nabeel A. Riza, Syed Azer Reza, and Philip J. Marraccini, "Electronically controlled agile lens-based broadband variable photonic delay line for photonic and radio frequency signal processing," Appl. Opt. 49, 6718-6725 (2010)

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