Spatial frequency diversity in liquid crystal spatial light modulators applied to signal-to-noise ratio improvement in coherent optodigital processors

Angel Sauceda-Carvajal; Maximiliano Vera Perez; Victor Hugo Diaz Ramirez; Arturo Bocanegra-Haro; Eduardo Tepichin-Rodriguez

doi:10.1117/12.514677

30 September 2003 Spatial frequency diversity in liquid crystal spatial light modulators applied to signal-to-noise ratio improvement in coherent optodigital processors

Angel Sauceda-Carvajal, Maximiliano Vera Perez, Victor Hugo Diaz Ramirez, Arturo Bocanegra-Haro, Eduardo Tepichin-Rodriguez

Author Affiliations +

Proceedings Volume 5264, Optomechatronic Systems IV; (2003) https://doi.org/10.1117/12.514677
Event: Photonics Technologies for Robotics, Automation, and Manufacturing, 2003, Providence, RI, United States

Abstract

Intrinsic properties of liquid crystals spatial light modulators, as sampling devices are commonly seen as disadvantages in opto-digital data processing; because the loss of light power due the replicated spectrum at the sampling process. We claim this apparent disadvantage can be seen as an advantage if we consider to filter Q replicates of the Sampled image Fourier spectrum. Moreover, we can use this technique to improve the signal to noise ratio (S/N), or to develop several operations in parallel over the same input data. In this work we are interestd in improving the S/N in opto-digital image substraction. Experimental results which reveal the advantage of this technique are shown.

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Angel Sauceda-Carvajal, Maximiliano Vera Perez, Victor Hugo Diaz Ramirez, Arturo Bocanegra-Haro, and Eduardo Tepichin-Rodriguez "Spatial frequency diversity in liquid crystal spatial light modulators applied to signal-to-noise ratio improvement in coherent optodigital processors", Proc. SPIE 5264, Optomechatronic Systems IV, (30 September 2003); https://doi.org/10.1117/12.514677

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