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Proceedings Paper

Low-loss fiber optic time-delay element for phased-array antennas
Author(s): Lawrence J. Lembo; Terry L. Holcomb; Michael G. Wickham; Philip H. Wisseman; John C. Brock
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Paper Abstract

We present a novel concept, the fiber optic Bragg grating true- time-delay (TTD) element, for implementing true time delay in the distribution network of an optically fed phased array antenna. the device utilizes narrowband optical Bragg reflection gratings written holographically into the core of a single-mode fiber at various positions along its length. An optical carrier is modulated by the RF signal of interest and launched into this delay-line fiber. The desired RF time delay may be realized by wavelength-selectable nature of the TTD device offers the possibility for simplified beamsteering control and channel multiplexing.

Paper Details

Date Published: 10 June 1994
PDF: 11 pages
Proc. SPIE 2155, Optoelectronic Signal Processing for Phased-Array Antennas IV, (10 June 1994); doi: 10.1117/12.177398
Show Author Affiliations
Lawrence J. Lembo, TRW Research Ctr. (United States)
Terry L. Holcomb, TRW Research Ctr. (United States)
Michael G. Wickham, TRW Research Ctr. (United States)
Philip H. Wisseman, TRW Research Ctr. (United States)
John C. Brock, TRW Research Ctr. (United States)


Published in SPIE Proceedings Vol. 2155:
Optoelectronic Signal Processing for Phased-Array Antennas IV
Brian M. Hendrickson, Editor(s)

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