Abstract
Integrated optical time-shift networks consisting of cascaded pairs of 2×2 linear electro-optic (EO) switches and optical delay lines in GaAs waveguides at 1.32 µm are investigated for true-time optical beamforming in phased array antennas. We report new state-of-the-art results in curved waveguide and corner bend insertion loss, and preliminary results from 2-bit time delay generators (TDGs) constructed in the form of GaAs-based photonic integrated circuits (PICs) utilizing these components. To our knowledge, these are the largest GaAs PICs built to date. These results represent significant progress in our longer-term goal of demonstrating a 7-bit TDG with a loss matching monolithic microwave integrated circuit (MMIC) delay line techniques, while providing very wide bandwidth unmatched by MMIC technology.
Original language | English (US) |
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Pages (from-to) | 264-271 |
Number of pages | 8 |
Journal | Proceedings of SPIE - The International Society for Optical Engineering |
Volume | 1703 |
DOIs | |
State | Published - Dec 2 1992 |
Event | Optical Technology for Microwave Applications VI and Optoelectronic Signal Processing for Phased-Array Antennas III 1992 - Orlando, United States Duration: Apr 20 1992 → … |
Bibliographical note
Publisher Copyright:© 1992 SPIE. All rights reserved.