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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 14 — May. 10, 1999
  • pp: 3053–3059

Waveguide-hologram-based wavelength-multiplexed pseudoanalog true-time-delay module for wideband phased-array antennas

Zhenhai Fu, Charles Zhou, and Ray T. Chen  »View Author Affiliations


Applied Optics, Vol. 38, Issue 14, pp. 3053-3059 (1999)
http://dx.doi.org/10.1364/AO.38.003053


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Abstract

A pseudoanalog true-time-delay (TTD) module based on substrate-guided waves and wavelength-division multiplexing is presented. A 1-to-32 (5-bit) even fan-out is demonstrated by use of a two-dimensional waveguide hologram array. This module has a packing density of 2.5 lines/cm2 and very compact packaging (8 cm × 4 cm × 8 mm). It also reduces TTD system complexity by providing continuously tuned delay signals to parallel-control the whole phased-array antenna system. The device has a measured bandwidth of as high as 2.4 THz. The delay signal can range from tens of picoseconds to several nanoseconds.

© 1999 Optical Society of America

OCIS Codes
(050.7330) Diffraction and gratings : Volume gratings
(060.4230) Fiber optics and optical communications : Multiplexing
(200.4650) Optics in computing : Optical interconnects

History
Original Manuscript: July 31, 1998
Revised Manuscript: October 27, 1998
Published: May 10, 1999

Citation
Zhenhai Fu, Charles Zhou, and Ray T. Chen, "Waveguide-hologram-based wavelength-multiplexed pseudoanalog true-time-delay module for wideband phased-array antennas," Appl. Opt. 38, 3053-3059 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-14-3053


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