We present an experimental demonstration of an optical pattern recognition scheme based on spatial homodyne detection. Our scheme is adaptive, all-optical, utilizes a single-element photo-detector, and provides a single parameter readout to quantify the efficacy of pattern recognition, thereby allowing very fast pattern recognition speeds. The spatial homodyne detector was applied to the identification of one- and two-dimensional phase profiles.
© 2010 Optical Society of America
Instrumentation, Measurement, and Metrology
Original Manuscript: September 7, 2010
Manuscript Accepted: October 14, 2010
Published: November 11, 2010
Magnus T. L. Hsu, Joachim Knittel, Jean-Francois Morizur, Hans-A. Bachor, and Warwick P. Bowen, "Optical pattern recognition via adaptive spatial homodyne detection," J. Opt. Soc. Am. A 27, 2583-2587 (2010)