Special Section on Free-Space Laser Communication

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

[+] Author Affiliations
William S. Rabinovich, Peter G. Goetz, Marcel W. Pruessner, Rita Mahon, Mike S. Ferraro, Doe Park, Erin Fleet

US Naval Research Laboratory, 4555 Overlook Avenue, Washington, DC 20375, United States

Michael J. DePrenger

Tekla, 3700 Fettler Park Drive, Suite 304, Quantico Center, Dumfries, Virginia 22025, United States

Opt. Eng. 55(11), 111603 (Aug 01, 2016). doi:10.1117/1.OE.55.11.111603
History: Received May 13, 2016; Accepted July 14, 2016
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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.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

William S. Rabinovich ; Peter G. Goetz ; Marcel W. Pruessner ; Rita Mahon ; Mike S. Ferraro, et al.
"Two-dimensional beam steering using a thermo-optic silicon photonic optical phased array", Opt. Eng. 55(11), 111603 (Aug 01, 2016). ; http://dx.doi.org/10.1117/1.OE.55.11.111603


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