Abstract: A measurement system includes a broadband light source that outputs a broadband light, an optical splitter that divides the broadband light into a plurality of divided light beams and a plurality of optical sensors, each optical sensor configured to receive a single one of the divided light beams and measure an electrical parameter of a conductor.

Abstract: Systems and methods are provided for digital transport of paramagnetic particles. The systems and methods may include providing a magnetic garnet film having a plurality of magnetic domain walls, disposing a liquid solution on a surface of the magnetic garnet film, wherein the liquid solution includes a plurality of paramagnetic particles, and applying an external field to transport at least a portion of the paramagnetic particles from a first magnetic domain wall to a second magnetic domain wall of the plurality of magnetic domain walls.

Abstract: A coupling apparatus includes a lens disposed between a port, such as a photodetector, and a light source, such as a fiber. The lens is aligned such that light emitted from the light source is focused by the lens onto the port. Between the lens and light source and/or lens and port, a low contrast medium is disposed to reduce reflection that could degrade signal strength.

Abstract: A nonvolatile magnetic memory array uses magnetic memory cells that are formed in two types of shapes. The cells lie at the intersections of rows and columns of electrically conductive lines, which serve as the conductive paths for the write currents used to change the magnetization states of the magnetic cells. The two types of cells have shapes that are mirror images of each other, i.e, the shape of the second type of cell is arrived at by rotating the first type of cell 180 degrees about an axis through the cell. The two types of cells are thus a pair of asymmetric cells because they are asymmetric in regard to the predominant axis of magnetization. In the preferred pattern, each of the cells has a parallelogram shape with a length and a width with the predominant axis of magnetization lying substantially along a line between the acute corners of the parallelogram.

Abstract: A device for the determination of the dynamic characteristics of a magnetic recording and reproducing head utilizes a support for the head to be analyzed and a standard head which are juxtaposed with common carrier and are controlled by a microcomputer through interface and shift register circuitry to automatically print out the saturation and response characteristics of the analyzed head. If a defect is determined, the standard head is activated so that the system can automatically detect whether the defect is an artifact of the recording medium or is a defect in the analyzed head.

Abstract: A current access bubble memory system includes a method and device for propagating and switching isolated bubbles within a plurality of orthogonal propagation channels. The device includes two orthogonal arrays of parallel current conductors oriented at 45.degree. angles to the two orthogonal bubble translation axes. The conductors in each array are regularly spaced a distance S apart from center to center. The first array of conductors are connected in parallel to a first current source and the second array of conductors are connected in parallel to a second current source. The propagation channels are defined by confining means to have a width d where d is the bubble diameter. The centerline of the channels are spaced a distance of about .sqroot.2 S/8 from the center of adjacent conductor intersections. Bubble translation occurs through sequential activation of the two bipolar current sources.

Abstract: A bias field control arrangement for correcting the bias field in accordance with stability range variations in magnetic domain thin film layers. A thin film layer is provided auxiliary to the layers, which auxiliary layer responds to external environmental conditions such as temperature in a manner substantially identical to that of the magnetic domain layers. A pair of register-detectors are defined on the layer in the form of permalloy domain propagating elements, the dimensions of the elements of one being optimized to propagate domains of a diameter larger than that of a domain of a diameter which is optimum in view of the stability range of the layers and the dimensions of the elements of the other being optimized to propagate domains of a diameter smaller than that of the optimum diameter domain. For normal operation, the domains will be propagated along both channels with equal facility and an output comparison section at the output of the detectors produces no control signal.