Two-dimensional optical phased array antenna on silicon-on-Insulator
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- 10 June 2010
- journal article
- Published by Optica Publishing Group in Optics Express
- Vol. 18 (13) , 13655-13660
- https://doi.org/10.1364/oe.18.013655
Abstract
Optical wireless links can offer a very large bandwidth and can act as a complementary technology to radio-frequency links. However, optical components nowadays are rather bulky. Therefore, we have investigated the potential of silicon photonics to fabricate integrated components for wireless optical communication. This paper presents a two-dimensional phased array antenna consisting of grating couplers that couple light off-chip. Wavelength steering of 0.24°/nm is presented, reducing the need of active phase modulators. The required steering range is 1.5°. The 3dB angular coverage range of these antennas is 0.007π sr with a directivity of more than 38dBi and antenna losses smaller than 3dB.Keywords
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