Abstract: Optical apparatus including an optical frequency conversion device, pumped by a non-polarized light beam. The apparatus may include a pump incident side, such as an optical fiber emitting non-polarized light beam, a polarization beam splitter to split the incident beam into two polarized beams, beam forming optics to shape the beams and rotate their polarization as required and couple them into the conversion device, and an optical frequency conversion device to convert the wavelength of both beams into a new wavelength.

Abstract: Optical apparatus including an optical frequency conversion device, pumped by a non-polarized light beam. The apparatus may include a pump incident side, such as an optical fiber emitting non-polarized light beam, a polarization beam splitter to split the incident beam into two polarized beams, beam forming optics to shape the beams and rotate their polarization as required and couple them into the conversion device, and an optical frequency conversion device to convert the wavelength of both beams into a new wavelength.

Abstract: Disclosed are methods and apparatus for homogenizing the exposure of different beams in a multi beam-plotter. The plotter typically operates on films or plates.

Abstract: Method and system for switching and routing, while logically managing and controlling, multichannel optical signals in an optical communication system, featuring (a) an optical package array of optically connected: optical switch elements, left side and bottom side input ports, right side and top side output ports, and, (b) an operatively connected management and control logic mechanism (MCLM). The system is used for forming a variety of general and specific extendable all optical cross connect (AOXC) chained optical package (COP) architectures. MCLM logically manages and controls switching and routing of light entering and exiting the optical switch elements via input and output ports. Includes optional optical signal switching and routing functions of grouping, multicasting, adding and/or dropping, converting, and, restoring, of single and groups of a plurality of wavelengths. The optical switch elements are preferably voltage controlled Electroholography based optical switches.