Switched time-delay elements based on AlGaAs/GaAs optical waveguide technology at 1.32um for optically controlled phased-array antennas

Charles T. Sullivan; Sayan D. Mukherjee; Mary K. Hibbs-Brenner; Anand Gopinath; Edith Kalweit; Terry Marta; W. Tim Goldberg; B. Walterson

doi:10.1117/12.138393

2 December 1992 Switched time-delay elements based on AlGaAs/GaAs optical waveguide technology at 1.32 μm for optically controlled phased-array antennas

Charles T. Sullivan, Sayan D. Mukherjee, Mary K. Hibbs-Brenner, Anand Gopinath, Edith Kalweit, Terry Marta, W. Tim Goldberg, B. Walterson

Author Affiliations +

Proceedings Volume 1703, Optical Technology for Microwave Applications VI and Optoelectronic Signal Processing for Phased-Array Antennas III; (1992) https://doi.org/10.1117/12.138393
Event: Aerospace Sensing, 1992, Orlando, FL, United States

Abstract

Integrated optical time-shift networks consisting of cascaded pairs of 2 x 2 linear electrooptic switches and optical delay lines in GaAs waveguides at 1.32 micron are investigated for true-time optical beam forming 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 utilizing these components. 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.

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Charles T. Sullivan, Sayan D. Mukherjee, Mary K. Hibbs-Brenner, Anand Gopinath, Edith Kalweit, Terry Marta, W. Tim Goldberg, and B. Walterson "Switched time-delay elements based on AlGaAs/GaAs optical waveguide technology at 1.32 μm for optically controlled phased-array antennas", Proc. SPIE 1703, Optical Technology for Microwave Applications VI and Optoelectronic Signal Processing for Phased-Array Antennas III, (2 December 1992); https://doi.org/10.1117/12.138393

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