Paper
17 September 1993 Optical time-delay network for phased arrays
Brad Kanack, R. Mark Boysel, Charles L. Goldsmith, Chris O. Hemmi, Gregory A. Magel, Carl E. Takle
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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.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Brad Kanack, R. Mark Boysel, Charles L. Goldsmith, Chris O. Hemmi, Gregory A. Magel, and Carl E. Takle "Optical time-delay network for phased arrays", Proc. SPIE 1958, Transition of Optical Processors into Systems 1993, (17 September 1993); https://doi.org/10.1117/12.157122
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Cited by 5 scholarly publications.
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KEYWORDS
Waveguides

Semiconductor lasers

Switches

Antennas

Phased array optics

Polysomnography

Signal attenuation

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