Abstract: The unique properties of quadratic lead lanthanum zirconate titanate (PLZT) compositions make feasible the development of phased array optical scanners. Two implementations of integrated PLZT phased array scanners as two-port and three-port devices are presented. The three-port offers a significant reduction in the maximum electrode voltage required to effect a specific scan angle. The maximum electrode voltage of the PLZT phased array scanner is characterized in terms of the resolution of the scanner.

Abstract: An optical chirp processor for the collection and processing clutter samples is presented that allows the simultaneous estimation of both the clutter mean and variance. The estimated clutter mean and variance allow the actual calculation of both clutter model parameters using a power spectrum analyzer, and a CFAR special purpose processor unit. The power spectrum analyzer is composed of: a spatial frequency demultiplexor, and a four element photodetector array. The special purpose processor is composed of: an A/D converter, a square root calculator, an averaging calculator, a combiner unit, a parameter memory unit, and a threshold calculator unit. The components of the CFAR processor may be implemented in a conventional CFAR processor (when modified by the teachings of the present invention) or in individual electronics components.

Abstract: A prism coupling mount is provided for readily substituting various prisms and planar slab waveguides therein without damage to these components. For maximum coupling efficiency, the spacing between the coupling prism base and the waveguide can be adjusted, along with the mode selection angle and the prism surface incident tilt angle. A rotatable support stage supports the prism coupling mount and the center of rotation thereof is adjustable to ensure that it lies directly beneath the prism input surface.