1 March 1998 Optical processing with feedback using smart-pixel spatial light modulators
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Optical Engineering, 37(3), (1998). doi:10.1117/1.601646
Abstract
A spatial light modulator is often used as the basic element in real-time recognition architectures. However, many of the devices suffer from poor uniformity and/or nonlinearities that affect the overall performance of any real-time recognition scheme. We propose using optical feedback as a method of improving device performance. We demonstrate both positive and negative feedback separately through a mixture of on-board electronic processors and optical polarization intensity encoding. Placing the spatial light modulator in a positive feedback system causes the system to act like a memory. Placing the spatial light modulator in a negative feedback system makes the spatial light modulator response more analog, which in turn leads to improved uniformity.
Jonathan S. Kane, Thomas G. Kincaid, Philip L. Hemmer, "Optical processing with feedback using smart-pixel spatial light modulators," Optical Engineering 37(3), (1 March 1998). http://dx.doi.org/10.1117/1.601646
JOURNAL ARTICLE
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KEYWORDS
Positive feedback

Negative feedback

Optoelectronics

Spatial light modulators

Optical signal processing

Polarizers

Sensors

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