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Proceedings Paper

Novel integrated optical beam former for phased-array antennas
Author(s): Mario Nicola Armenise; Michele Armenise; Roberto Diana
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Paper Abstract

We present the theoretical investigation, including design criteria, of a new optical beam former for phased-array active antennas. The device is formed by a Z-cut LiNbO3 channel- planar composite waveguide, an array of interferometric modulators and a linear microlens array. The basic element of the new architecture is the array of Mach-Zehnder Ti:liNbO3 intensity modulators having asymmetric coplanar-strip traveling-wave electrodes in which a relatively thick SiO2 buffer layer is utilized to reduce the phase velocity mismatch between the microwaves and optical waves. A comparison with other optical and electronic architectures already proposed shows a number of significant advantages. In particular, our device can be used in multichannel optical computing systems as well as in optical communication and RF signal processing systems allowing to overcome severe frequency limitations typical of devices reported in literature since it can work at frequencies greater than 30 GHz. So the very large transmission rate typical of the optical fiber communication systems may be conveniently exploited.

Paper Details

Date Published: 2 October 1998
PDF: 9 pages
Proc. SPIE 3464, Optical Devices and Methods for Microwave/Millimeter-Wave and Frontier Applications, (2 October 1998); doi: 10.1117/12.323133
Show Author Affiliations
Mario Nicola Armenise, Politecnico di Bari (Italy)
Michele Armenise, Politecnico di Bari (Italy)
Roberto Diana, Politecnico di Bari (Italy)

Published in SPIE Proceedings Vol. 3464:
Optical Devices and Methods for Microwave/Millimeter-Wave and Frontier Applications
Mario Nicola Armenise; Lev S. Sadovnik; Walter Pecorella; Lev S. Sadovnik, Editor(s)

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