Optical correlation with phase encoding and phase filtering

The image-encoding optical activity of a deformable-mirror device (DMD) has been investigated by means of numerical simulations in the Fourier plane. Simulation results are presented which reveal the sensitivity of phase-encoded/phase-filtered systems to noise, in-plane rotation, and magnification. The present simulations are based on phase-only modulation in the input and filter planes, and do not illustrate the 'phase-mostly' nature of the devices. A procedure to achieve a filter for a real system is proposed based on a simplistic model of a DMD pixel and preliminary device data.