We propose a hybrid multiplexing method for volume holographic correlators based on the combination of orthogonal random phase modulation of an object beam and two-dimensional angular multiplexing of a reference beam. This method implements storing multiple groups of library images in a single storage location and outputting multiple groups of correlation spots by switching the modulation phase masks. Three experiments are designed to test the validity of this method.
© 2008 Optical Society of America
Fourier optics and signal processing
Original Manuscript: February 1, 2008
Revised Manuscript: March 20, 2008
Manuscript Accepted: April 2, 2008
Published: May 14, 2008
Kai Ni, Wei Ren, Zongyao Qu, Liangcai Cao, Qingsheng He, and Guofan Jin, "Phase-modulated multigroup volume holographic correlator," Opt. Lett. 33, 1144-1146 (2008)