Abstract: A displacement output device according to the present invention includes: a memory; and at least one processor coupled to the memory. The processor performing operations. The operations include: acquiring a first ground surface displacement at a first point from a synthetic aperture radar; estimating a second ground surface displacement at a second point different from the first point using the acquired first ground surface displacement; clipping at least one of the first ground surface displacement and the second ground surface displacement included in a preset first region from the first ground surface displacement and the second ground surface displacement; and outputting at least one of the first ground surface displacement and the second ground surface displacement included in the first region.

Abstract: An electrically controlled optical device effective index includes a traveling wave electrode, a shield conductor and a thick buffer layer of a low dielectric constant. The thickness of an overlaid layer disposed between the traveling wave electrode and the shield conductor as well as the thickness of the buffer layer is so determined that an effective index of a microwave transmitted through the traveling wave electrode approaches an effective index of light transmitted through an optical waveguide, and that a microwave conductor loss is reduced, and that a characteristic impedance of said traveling wave electrode approaches a characteristic impedance of an associated external microwave circuit.

Abstract: An electrically controlled optical device includes a traveling wave electrode structure, a shield conductor and a thick buffer layer having a low dielectric constant. The thickness of an overlaid layer disposed between the traveling wave electrode structure and the shield conductor, as well as the thickness of the buffer layer, is determined so that the effective index of a microwave transmitted through the traveling wave electrode structure approaches the effective index of light transmitted through an optical waveguide, so that the microwave conductor loss is reduced, and so that the characteristic impedance of the traveling wave electrode structure approaches the characteristic impedance of an associated external microwave circuit.

Abstract: A surface acoustic wave (SAW) resonator in which a pair of surface acoustic wave reflectors are spaced apart on a piezoelectric substrate from each other by a suitable distance and each consists of a grating electrode construction and a periodic array of grooves and a surface acoustic wave transducer which consists of an interdigital electrode structure and a periodic array of grooves is interposed between the reflectors and spaced apart therefrom by a suitable distance. The electrode period L.sub.T of the transducer and the electrode period L.sub.R of the reflectors are so selected as to satisfy the following equation: ##EQU1## where C.sub.1T : the acoustic mismatching term at the boundary between the electroded portion and the non-electroded portion of the transducer and is given byC.sub.1T =.vertline.1-Z.sub.2 /Z.sub.1 .vertline./.pi.whereZ.sub.2 : the acoustic impedance of the electroded portion, andZ.sub.1 : the acoustic impedance of the non-electroded portion;C.sub.