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

C. T. Sullivan, S. D. Mukherjee, M. K. Hibbs-Brenner, A. Gopinath, E. Kalweit, T. Marta, W. Goldberg, R. Walterson

Research output: Contribution to journalConference article

23 Scopus citations

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 languageEnglish (US)
Pages (from-to)264-271
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume1703
DOIs
StatePublished - Dec 2 1992
EventOptical Technology for Microwave Applications VI and Optoelectronic Signal Processing for Phased-Array Antennas III 1992 - Orlando, United States
Duration: Apr 20 1992 → …

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