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Proceedings Paper

Optical time-delay network for phased arrays
Author(s): Brad Kanack; R. Mark Boysel; Charles L. Goldsmith; Chris O. Hemmi; Gregory A. Magel; Carl E. Takle
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Paper Abstract

An optical time delay network (OTDN) for time delay steering of arrays of various sizes is being developed which features passive waveguides and micromechanical switches monolithically fabricated on silicon. Separately packaged directly modulated lasers and optical envelope detectors perform the RF and optical conversions. Recent developments in the areas of phosphosilicate glass (PSG) waveguides and micromechanical switches are presented. Broadband reactive matching circuits for commercially available directly modulated lasers and optical detectors are described which demonstrate VSWRs of less than 1.5:1 and improvement of 16 dB in overall RF/optical/RF conversion efficiency for an octave bandwidth. Finally, plans for demonstrating the operation of the time delay network in a 4 by 16 element phased array with an operating band of 2 to 4 GHz are presented.

Paper Details

Date Published: 17 September 1993
PDF: 19 pages
Proc. SPIE 1958, Transition of Optical Processors into Systems 1993, (17 September 1993); doi: 10.1117/12.157122
Show Author Affiliations
Brad Kanack, Texas Instruments Inc. (United States)
R. Mark Boysel, Texas Instruments Inc. (United States)
Charles L. Goldsmith, Texas Instruments Inc. (United States)
Chris O. Hemmi, Texas Instruments Inc. (United States)
Gregory A. Magel, Texas Instruments Inc. (United States)
Carl E. Takle, Texas Instruments Inc. (United States)

Published in SPIE Proceedings Vol. 1958:
Transition of Optical Processors into Systems 1993
David P. Casasent, Editor(s)

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