Implementation issues for a noncoherent optical correlator

David P. Casasent; Gregory P. House

doi:10.1117/12.169422

1 March 1994 Implementation issues for a noncoherent optical correlator

David P. Casasent, Gregory P. House

Proceedings Volume 2237, Optical Pattern Recognition V; (1994) https://doi.org/10.1117/12.169422
Event: SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, 1994, Orlando, FL, United States

Abstract

This paper concerns the realization of a noncoherent correlator: the positioning tolerances and light budgets of a noncoherent correlator, the effect of the wavelength spread of the noncoherent source, the need for multiplexing noncoherent filters, the best input device (CRT or SLM) to use in a noncoherent correlator, and the light budget for the different noncoherent correlators. We conclude that a laser diode with a diffuser and input SLM laser diode array is the best choice for light source and input device. We demonstrate that a laser diode array can also be used to multiplex CGH's and that this is the preferable architecture.

Citation Download Citation

David P. Casasent and Gregory P. House "Implementation issues for a noncoherent optical correlator", Proc. SPIE 2237, Optical Pattern Recognition V, (1 March 1994); https://doi.org/10.1117/12.169422

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