Abstract: An integrated electronic-optoelectronic module comprising: an ultrathin silicon-on-sapphire composite substrate; at least one electronic device fabricated in the ultrathin silicon; and at least one optoelectronic device bonded to the ultrathin silicon-on-sapphire composite substrate and in electrical communication with the at least one electronic device fabricated in the ultrathin silicon layer. For example, VCSELs and photodetectors are integrated with CMOS electronic circuitry to provide useful modules for electro-optical interconnects for computing and switching systems.

Abstract: An optical switch is disclosed which includes hollow waveguide structures having cantilevered beam deflectors to couple light out of the waveguide plane. An array of such waveguides with deflector combinations may be fabricated on a substrate. By combining substrates, devices such as all-optical cross bar switches, image display and scanning devices may be created.

Abstract: This invention pertains to the design of optimized far field viewing devices that simultaneously produce bright far field holographic light patterns and achieve good see-through performance to present a well focused scene. A far field transmission hologram recorded on a transparent substrate has regions having high diffraction efficiency juxtaposed with regions having low diffraction efficiency. The high diffraction efficiency regions contribute to production of bright far field holographic light patterns, whereas the low diffraction efficiency regions contribute to see-through performance.

Abstract: A method and a viewing device for generation of selective visual effects. The method entails encoding a holographic optical transparency for generating pre-selected patterns of light when stimulated by appropriate sources of light and a structure to enable viewing through such a transparency. The viewing device contains a suitably encoded holographic optical transparency and a structure produced with semi-rigid material which allow viewing of the natural scene through the transparency with two eyes. The encoding of the transparencies causes all limited extent light sources in a scene to be replaced with pre-selected patterns of light while producing minimal distortion in the remainder of the scene.

Abstract: A digital acousto-optic device for performing vector-matrix multiplication. The device comprises two multitransducer acousto-optic cells imaged onto each other. The first cell receives the elements of the input vector in parallel. The second cell receives the elements of sequential row vectors of the matrix in parallel. The data in the two cells act to modulate a light beam passing therethrough. The modulated light beam is detected to produce an output data stream containing the elements of the output vector. The invention uses binary coded data for high accuracy (.about.16-bits).

Abstract: Disclosed as a beamforming system, particularly useful for seismic exploration or undersea surveillance, in which data processing of the system is done optically. Sensor outputs are subjected to plural sets of time delays, and the system beams formed optically. Four embodiments are presented of the optical processing hardware.

Abstract: A triple matrix product processor for optically multiplying three matrices U. G, and V, comprising a matrix-vector processor for sequentially multiplying each column of an M.times.N matrix G by at least a row of a P.times.M matrix U so that the 1.sup.th column of G is multiplied by the at least a row of matrix U producing at least the il.sup.th element of an intermediate result. The triple matrix product processor further includes an outer product processor for multiplying at least the il.sup.th element of the intermediate result with the 1.sup.th row of an N.times.Q matrix V producing at least a row of an N.times.N outer product matrix in a first plane, and a time-integrating optical detector array for summing the light impinging on the first plane from the outer product processor to produce all or a portion of a P.times. triple matrix product after all of the N columns of the matrix G and all of the N rows of the matrix V have been cycled through the processors.

Abstract: An optical matrix multiplier using two linear modulating arrays in which the columns of the first matrix to be multiplied control the modulation of one array and the rows of the second matrix control the other array. Light is directed through all combinations of elements on the two arrays and the resultant beams measured by individual elements on a two-dimensional detector array. The detecting elements time integrates the intensity of light falling on each of them, which value corresponds to an element of the product of the two matrices. The invention may be implemented among other ways with two linear electrooptical arrays, a linear array of light emitting diodes and a linear electrooptical array, or two Bragg cells and a pulsed light source.

Abstract: An optical processor that can compute the moments of a two-dimensional image in parallel. The image is placed at the plane of a holographic mask which is disposed in the front focal plane of a Fourier-transforming lens and each of the desired moments is found at a respective one of a plurality of photodetectors arrayed in the back focal plane of the lens.

Abstract: This invention pertains to the design of optimized far field viewing devices that simultaneously produce bright far field holographic light patterns and achieve good see-through performance to present a well focused scene. A far field transmission hologram recorded on a transparent substrate has regions having high diffraction efficiency juxtaposed with regions having low diffraction efficiency. The high diffraction efficiency regions contribute to production of bright far field holographic light patterns, whereas the low diffraction efficiency regions contribute to see-through performance.