Optical time-delay network for phased arrays

Brad Kanack; R. Mark Boysel; Charles L. Goldsmith; Chris O. Hemmi; Gregory A. Magel; Carl E. Takle

doi:10.1117/12.157122

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

Proceedings Volume 1958, Transition of Optical Processors into Systems 1993; (1993) https://doi.org/10.1117/12.157122
Event: Optical Engineering and Photonics in Aerospace Sensing, 1993, Orlando, FL, United States

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.

Citation Download Citation

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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