5 May 2012 Characterization of InGaAs avalanche photodiode arrays with varying geometries for free-space optical communication
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Abstract
Photodiode arrays are instrumental in providing pointing and tracking information for free space optical communication systems. Recent advances in the fabrication and development of low noise, high bandwidth avalanche photodiode (APD) arrays have enabled these devices to be used not only as position sensitive detectors (PSD) for tracking but also as communications receivers. In a collaborative effort with Optogration, Inc., the U.S. Naval Research Laboratory has developed avalanche photodiode arrays with three different geometries: a 3x3 square pixel array, a centered hexagonal pixel array, and a 5 pixel concentric array configuration with a center pixel and four periphery pixels. The characterization and performance of each array geometry will be described along with associated front-end and digital electronics. Design tradeoffs for maximizing the performance of a given array geometry will also be discussed.
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Mike S. Ferraro, Mike S. Ferraro, Harris R. Burris, Harris R. Burris, Rita Mahon, Rita Mahon, William S. Rabinovich, William S. Rabinovich, Wade T. Freeman, Wade T. Freeman, James L. Murphy, James L. Murphy, Peter G. Goetz, Peter G. Goetz, Christopher I. Moore, Christopher I. Moore, Linda M. Thomas, Linda M. Thomas, William R. Clark, William R. Clark, William D. Waters, William D. Waters, Kenneth Vaccaro, Kenneth Vaccaro, Brian D. Krejca, Brian D. Krejca, } "Characterization of InGaAs avalanche photodiode arrays with varying geometries for free-space optical communication", Proc. SPIE 8380, Atmospheric Propagation IX, 83800A (5 May 2012); doi: 10.1117/12.919924; https://doi.org/10.1117/12.919924
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