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Optical Engineering

Two-dimensional beam steering using a thermo-optic silicon photonic optical phased array
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Paper Abstract

Many components for free-space optical (FSO) communication systems have shrunken in size over the last decade. However, the steering systems have remained large and power hungry. Nonmechanical beam steering offers a path to reducing the size of these systems. Optical phased arrays can allow integrated beam steering elements. One of the most important aspects of an optical phased array technology is its scalability to a large number of elements. Silicon photonics can potentially offer this scalability using CMOS foundry techniques. A phased array that can steer in two dimensions using the thermo-optic effect is demonstrated. No wavelength tuning of the input laser is needed and the design allows a simple control system with only two inputs. A benchtop FSO link with the phased array in both transmit and receive mode is demonstrated.

Paper Details

Date Published: 1 August 2016
PDF: 7 pages
Opt. Eng. 55(11) 111603 doi: 10.1117/1.OE.55.11.111603
Published in: Optical Engineering Volume 55, Issue 11
Show Author Affiliations
William S. Rabinovich, U.S. Naval Research Lab. (United States)
Peter G. Goetz, U.S. Naval Research Lab. (United States)
Marcel W. Pruessner, U.S. Naval Research Lab. (United States)
Rita Mahon, U.S. Naval Research Lab. (United States)
Mike S. Ferraro, U.S. Naval Research Lab. (United States)
Doe Park, U.S. Naval Research Lab. (United States)
Erin F. Fleet, U.S. Naval Research Lab. (United States)
Michael J. DePrenger, Tekla (United States)

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