Silica-Based Optical Time-Shift Network.
Final technical rept. Aug 93-Aug 95,
HUGHES RESEARCH LABS MALIBU CA
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The objective of this program was to design, fabricate, package, and demonstrate a silica waveguide time delay network for evaluation in a phased array antenna testbed. Specifically, a 4-bit silica waveguide time shifter module, with programmable time delay steps of 0.248 nsec has been successfully developed. The silica waveguide module was inserted into a 96 element L band array, controlling the central column. Extensive demonstration and evaluation verified that the antenna has better than 50 instantaneous bandwidth scanning angles - 60 degrees. In addition, an improved, smaller package was developed and evaluated, resulting in a folded-chip package with dimensions of approximately 13 cm x 7 cm.
- Acoustooptic and Optoacoustic Devices