SLM with Independent Phase and Amplitude Modulation

Period of Performance: 07/07/1998 - 10/31/2000


Phase 2 SBIR

Recipient Firm

Silicon Mountain Design, Inc.
5055 Corporate Plaza Drive,, Suite 100
Colorado Springs, CO 80919
Principal Investigator


In an optical processor, data is first converted to coherent light with a Spatial Light Modulator (SLM). Raw data is fed to an SLM and illuminated with a coherent reference beam to create a 2 dimensional data pattern. This approach requires converting data from its original parallel optical format to a serial electrical SLM input and then back to parallel optical form as a coherent reference beam illuminates the SLM. After optical processing, the parallel data output is then squeezed back into serial format as the imaging array outputs data in RS-170 or similar format. Because of this serial/parallel/serial conversion, the very power gained from the parallelisms of optical processing is typically forfeited at the input/output interface. The Phase II development proposed will focus on a high-speed architecture which maximizes input parallelism through the use of an optically addressed SLM. At the system output, throughput will again be maximized by digitally preprocessing correlation data within the camera itself. The marriage of an ultra high-speed front end SLM with smart digital processing at the processor output promises a new breed of correlator which more fully utilizes the power of optical computing.