Abstract: Disclosed is a high voltage output device having a serial-parallel stack structure of capacitors. The high voltage output device includes a substrate includes a capacitor element and a pillar structure provided on an upper surface of the substrate. The substrate includes a first electrode and a second electrode, which have different potentials from each other. The capacitor element is connected to at least one of the first electrode and the second electrode.

Abstract: A telescopic pipe includes a base pipe having a base inner pipe rotated by external force, and a base outer pipe arranged to receive the base inner pipe; a connecting pipe having a connecting inner pipe coupled to the base inner pipe to be extendable to transfer rotational force, and a connecting outer pipe screw-coupled to the inner circumferential surface of the base outer pipe to be extendable; and a finishing pipe including a finishing inner pipe coupled to the connecting inner pipe to be extendable and to be rotated, and a finishing outer pipe that is interlocked by means of rotation of the finishing inner pipe and is screw-coupled to the inner circumferential surface of the connecting outer-pipe to be extendable, wherein the connecting outer pipe is interlocked by the rotational force of the extended finishing outer pipe and thus is extended and retracted along the base outer pipe.

Abstract: A telescopic pipe includes a base pipe having a base inner pipe rotated by external force, and a base outer pipe arranged to receive the base inner pipe; a connecting pipe having a connecting inner pipe coupled to the base inner pipe to be extendable to transfer rotational force, and a connecting outer pipe screw-coupled to the inner circumferential surface of the base outer pipe to be extendable; and a finishing pipe including a finishing inner pipe coupled to the connecting inner pipe to be extendable and to be rotated, and a finishing outer pipe that is interlocked by means of rotation of the finishing inner pipe and is screw-coupled to the inner circumferential surface of the connecting outer-pipe to be extendable, wherein the connecting outer pipe is interlocked by the rotational force of the extended finishing outer pipe and thus is extended and retracted along the base outer pipe.

Abstract: The present invention relates to bonding of optical elements such as an optical waveguide, an optical collimator, an optical attenuator, an optical isolator, etc., and in particular, to an apparatus and method for bonding the optical elements by non-contact soldering to prevent moisture from penetrate into inside the optical elements by performing soldering without being in direct contact with a bonding portion of optical elements and by sealing up completely a gap formed in the bonding portion between the housings during packaging or bonding optical elements.

Abstract: An optical part packaging method and a collimator assembly method are provided. In the method for packaging an optical part having collimators which convert light emitted from a fine light source to a parallel light, and focus the transmitted parallel light, optical devices are bonded in the collimators by a conductive adhesive to increase the adhesiveness between the optical devices and the tensile strength of the optical devices. Then, the collimators are aligned in both sides of the optical part, a first housing, integrally formed, is bonded around the collimators by soldering to protect the optical devices and bond the collimators, and a second housing is bonded around the first housing by a waterproof and vibroisolating material to increase the mechanical strength of the first housing. Finally, protection tubes are bonded to the respective collimators by epoxy sealing to protect the ends of optical fibers in the collimators.

Abstract: A light amplifier is constructed with only one multi-stage optical isolator so as to reduce the size thereof and to lower the fabrication cost thereof. The multi-stage optical isolator has two input ports and two output ports for cutting-off a reverse flow of a forwarding light when a following input light enters a first input port and when an output light enters a second input port. A source pump generates light used to amplify weak input light. A wavelength division multiplexer division-modulates wavelengths of the light generated by the source pump and the light forwarded through the multi-stage optical isolator. An optical fiber amplifies the light from the wavelength division multiplexer, and emits the amplified light through the first port of the multi-stage optical isolator.

Abstract: A optical isolator apparatus suppressing transmission of light in a backward direction having transmitting light detecting stages includes optical fibers respectively arranged at input and output stages without using optical distributers requiring a specifically-processed coating. The apparatus can be used for detecting transmitting light. In other words, without using optical taps requiring a specifically-processed coating. The apparatus includes a first detecting optical fiber adapted to receive multi-reflected light generated in the interior of the optical isolator apparatus and to detect input-stage detection light based on the multi-reflected light and, a first lens adapted to collimate the input signal light. An output optical fiber is adapted to transmit an output signal light. A second detecting optical fiber is adapted to detect backward light reflected from the output optical fiber and introduced again in the interior of the optical isolator apparatus.

Abstract: An optical device comprises a signal transmission optical fiber for transmitting an input light signal to an output port, a scattered light rays absorbing optical fiber for absorbing multiply reflected light rays generated in the optical device, a ferrule for fixedly holding the signal transmission optical fiber and scattered light rays absorbing optical fiber, a lens for focusing the input light signal transmitted through the signal transmission optical fiber, and a sleeve for fixedly aligning the ferrule and the lens, thereby preventing the reflected light rays from being fed back to the signal transmission optical fiber.

Abstract: An optical coupling device includes a ferrule that holds an optical fiber; a ball lens that focuses light from the optical fiber upon a point; and a housing that aligns the ferrule and the ball lens. A method for manufacturing such an optical coupling device includes the steps of fabricating a ferrule to support and hold a single-core optical fiber; inserting and fitting the single-core optical fiber into the center of the ferrule; grinding the face of the ferrule holding the single-core optical fiber; fabricating a ball lens whose surface is coated with an anti-reflection film to focus light from the single-core optical fiber on a point; fabricating an integral housing on the basis of a calculation of an offset distance for aligning the ferrule and the ball lens; fixing the ferrule to the inside of the housing; and pushing the ball lens into the housing with a predetermined pressure to fix the ball lens to the inside of the housing.

Abstract: An aligning apparatus for optical fiber coupling and the manufacturing method there of are disclosed.