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Proceedings Paper

Integrated high-speed digital optical true-time-delay module for synthetic aperture radars
Author(s): James Foshee; Suning Tang; Jennifer Colegrove; Yuanji Tang; Jibing Lin; Xuping Zhang
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Paper Abstract

This paper provides a description of the research for the development of an integrated high speed true-time-delay module for synthetic aperture radars. The unique feature of the approach is that the true-time-delay waveguide circuit and electro-optic switching elements are integrated. As a result this integration significantly reduces the device size while simplifying the difficult packaging problem associated with the interfaces between optical fibers and optical switches. Such a monolithic approach provides greater precision for the RF phase control that the phase control provided by fiber-delay-lines as a result to the submicrometer accuracy of lithography-defined polymeric waveguides. More importantly, the optical switched true-time-delay network requires less electrical power due to the low power consumption of electrically-switchable waveguide gratings. Furthermore, the electrically-switchable waveguide gratings have a very fast switching speed (<50 μs) that is at least 100 time faster than any existing commercial optical switching matrix.

Paper Details

Date Published: 17 January 2005
PDF: 9 pages
Proc. SPIE 5644, Optoelectronic Devices and Integration, (17 January 2005); doi: 10.1117/12.568952
Show Author Affiliations
James Foshee, Air Force Research Lab. (United States)
Suning Tang, Crystal Research, Inc. (United States)
Jennifer Colegrove, Crystal Research, Inc. (United States)
Yuanji Tang, Crystal Research, Inc. (United States)
Jibing Lin, Crystal Research, Inc. (United States)
Xuping Zhang, Crystal Research, Inc. (United States)


Published in SPIE Proceedings Vol. 5644:
Optoelectronic Devices and Integration
Hai Ming; Xuping Zhang; Maggie Yihong Chen, Editor(s)

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