Abstract: A small package is provided for a flash EEPROM memory. The small package uses terminals which are part of a bottom conductive layer of a circuit board. In this manner, the final package can be quite thin. The circuit board can be connected to the integrated circuits and passive devices and can be encapsulated in plastic or glued to a plastic cover. In this manner, a thin and relatively inexpensive package can be formed. Additionally, the circuit board can have testing connections which can be removed before forming the final package.

Abstract: In an optical amplifier, a filter is employed to reflect pump power into an erbium optical fiber carrying an input radiation signal, causing the signal to be amplified. The filter passes the amplified radiation signal to a partially reflecting optical interface which passes a small portion of the amplified radiation signal for monitoring purposes. Most of the amplified radiation signal is reflected by the interface and reflected again by another interface towards an output channel preferably parallel to the input channel for a compact design. Isolators may be employed between the filter and a first partially reflecting interface.

Abstract: A distributed matrix switch comprises a number of collimators each comprising a ferrule and a GRIN lens. A partially reflective coating is provided at the GRIN lens surface to pass a portion of an incoming light beam and to reflect the remainder. If the reflected portion is conveyed by means of an optical path to another collimators of similar construction, selected percentages of an incoming beam may be distributed along two or more optical paths. A receiving channel is then moved to different positions for receiving the portion of the light that is passed by one of the collimators to accomplish switching.

Abstract: An improved crucible cover for multiple pocket electron beam sources has been invented. The invention provides selection between one of the multiple pockets for evaporative heating and a noncontacting, line-of-sight blocking baffle between heated and unheated pockets. In one embodiment, the baffle is formed by the cooperation of a crucible surface groove with a cover feature that extends into the groove. In a second embodiment, the baffle is formed by a barrier extending upwards from the crucible surface between pockets that cooperates with a cover to form the line-of-sight baffle. The crucible and cover in these embodiments accommodate deposits without hindering the ability of the baffle to reduce contamination or interfere with the operation of the source. Additionally, the cover and crucible may be operated separately, with a cover lifting mechanism that lowers the cover to form a baffle and raises the cover to allow the separately controlled rotation of the crucible.