Abstract: A method for preparing a fiber-optic polarizer involves a first step in which the cladding layer of a single-mode optical fiber is side-polished to form a planar surface contiguous to the core region of the single-mode optical fiber. The planar surface is formed thereon a buffer dielectric/metal composite thin film, or the planar surface is coated by sputtering with a metal layer which is then coated with a medium having a refractive index matching to that of the optical fiber. The polishing of the single-mode optical fiber is done by using a semiconductor substrate having one or more V-shaped recesses having a large curvature radius.

Abstract: A multi-quantum-well Mach-Zehnder optical phase modulator selectively generates positive and negative frequency chirp. The modulator has an asymmetric input y-junction coupler and an asymmetric output y-junction coupler joined by interferometric arms defining two optical paths of unequal length so as to generate a fixed phase difference of .pi. or an integral odd multiple thereof. The modulator has electrodes on each arm for receiving modulating electric fields in a push-pull relationship. A control electrode is provided on one of the arms for receiving a control electric field. The modulator, when driven without any control electric field generates negative frequency chirp, and selectively generates positive frequency chirp in response to adjustment of the control electric field. As an alternative, the length differential between respective arms can be selected to generate a phase difference of .pi./2, in which case control electrodes are required on each of the interferometric arms.

Abstract: A system includes mateable connectors (12, 14) with mateable optic fiber termini, which provides for precision alignment of the termini and which facilitates installation of an insert whose front end must be of rectangular shape. Two mating sets of optic fiber termini (30, 32) are precisely aligned by a pair of pin-receiving alignment holes (44, 46) in one connector and a pair of pins (40, 42) projecting from the other connector, wherein a first (40) of the alignment pins is precisely cylindrical and fits closely in the first hole, and a second (42) of the pins is also precisely cylindrical but fits into a hole (46) that is elongated in a direction toward and away from the first hole. A front portion (110) of an insert is of largely rectangular cross-section, while the rear portion (112) of the insert is of largely circular cross-section to enable retention by a circular retainer clip (120) and to provide threads (122) for threading into a backshell.

Abstract: An optical fiber connector housing or facilitating the cross-connection or interconnection of optical fibers is provided having upper and lower plate members spaced apart from one another with the front edge of the lower plate member extending further forward than the front edge of the upper plate member. A connecter panel depends generally vertically downward from the front edge of the upper plate member thereby defining a shelf portion at the forward part of the lower plate member. A door is hingeably connected to the front edge of the lower plate member thereby defining a forward cable area, at least one side aperture, and at least one top aperture forward of the connector panel.

Abstract: A device is used for receiving input signal light and pump light from a first remote site through a first optical fiber and a second optical fiber, respectively, and for sending amplified signal light through a third optical fiber to a second remote site.

Abstract: The fiber optic interconnection apparatus includes a receptacle mounted at least partially within a wall of an enclosure, such as an optical network unit, a network interface device or a splice closure, and a fiber optic cable assembly for mating with the receptacle. By mating the fiber optic cable assembly with the receptacle in a predetermined aligned manner, one or more optical fibers of the fiber optic cable on which the fiber optic cable assembly is mounted can be optically interconnected with respective optical fibers held by the receptacle which extend through the receptacle and into the enclosure.

Abstract: A manifold for breaking out optical fibers from a multifiber bundle has at least one input channel and several output channels. The channels are initially laterally open so that fibers can be laid in the channels without having to thread a fiber end through an aperture, and can then be closed once the fiber has been laid in, to retain fiber.

Abstract: This invention relates to fluoride glass with a specific composition having wide infrared transmission. A fluoride optical fiber using this fluoride glass can give high efficiency with a low loss. The fluoride optical fiber having a second cladding on the outer periphery of a first cladding can adjust the refractive index of the first cladding suitably.

Abstract: A semiconductor laser module includes: a semiconductor substrate; a plurality of surface emitting lasers provided on a primary plane of the semiconductor substrate; a plurality of guiding holes provided on a secondary plane of the semiconductor substrate, the secondary plane being opposite to the primary plane; and an optical fiber tape including a plurality of optical fibers and a covering material which fixes the plurality of optical fibers in parallel with each other, one tip of the optical fiber tape being adjoined to the secondary plane of the semiconductor substrate. A pitch of the respective surface emitting lasers is equal to an interval of a center of the respective optical fibers. The respective guiding holes are aligned with the respective surface emitting lasers so that a center of a light beam emitted from each of the surface emitting lasers and a center of each of the guiding holes are at approximately the same position on the secondary plane of the semiconductor substrate.

Abstract: In a modular laser system, a plurality of laser modules are interchangeably mounted on a support rack with each laser module transmitting an output beam to a respective optical pump fiber, and the plurality of pump fibers are optically coupled to a laser rod for generating a combined output beam. A laser diode array is mounted within a sealed chamber of each module, and an output wave-guide of each module is coupled through a plurality of optical fibers to the diode array to receive the laser emissions. The other end of each output wave-guide has a first connector, and each pump fiber has a corresponding second connector permitting the output wave-guides to be interchangeably connected to the pump fibers. A control circuit of each laser module monitors the status of its laser diodes, the voltage and current supplied thereto, and the temperature conditions, and generates signals indicative of these parameters for detecting and replacing failed or defective laser modules.

Abstract: A fiber optic probe protector for protecting a fiber optic probe such that sterilization of the probe after each use is not necessary. The fiber optic probe protector includes a sheath, a window and a handle. The sheath defines a tubular configuration, a first end, and a second end and the window is mounted in the first end of the sheath. The handle defines a first end, a second end, an interior cavity and a locking means. The second end of the sheath is mounted to the first end of the handle and the interior cavity of the handle and the sheath provide a passage for a fiber optic probe therethrough such that the face of the probe abuts against the window. The locking means locks the fiber optic probe in position. The fiber optic probe protector also includes a vacuum assembly which when hooked to a vacuum removes secretions or fluid from the surface to be analyzed with the probe.

Abstract: The invention provides an optical coupling switch and flat panel display including an array of such optical coupling switches. The optical coupling switch includes a light storage plate adapted to set up conditions for total internal reflection such that light injected into the plate is internally reflected. A light tap is disposed proximal to a coupling surface of the light storage plate for coupling internally reflected light out of the light storage plate and into the light tap when the light tap is brought into contact with the light storage plate coupling surface. The light tap is capable of movement in a direction perpendicular to the light storage plate in response to an applied electrostatic force. The optical coupling switch includes a scattering mechanism, such as a scattering surface or scattering medium, for scattering light in the light tap into a viewing volume.

Abstract: An optical submount and a method of making the optical submount are described. A cavity is formed in a substrate. The cavity has sloping side walls. A photonics device is then mounted on the substrate at a predefined distance from the cavity with the optical axis of the photonics device aligned with a diagonal of the cavity. A spherical lens is seated in contact with the side walls of the cavity to have a predefined relationship with the photonics device without light beam obstruction.

Abstract: A method of manufacturing an integrated semiconductor optical device comprises forming an optical fiber positioning groove of a main surface of a support substrate, flattening the main surface of the support substrate, positioning an optical component on the flatted main surface, again exposing the groove, and assembling and positioning an optical fiber in the exposed groove.

Abstract: Apparatus for arranging a plurality of stacks of optical fibre splice oganizers in a closure comprises a frame and at least two optical fibre splice organizer supports located on the frame, each organizer support being arranged to support a stack of organizers. The frame may be elongate and the organizer supports may each support a stack of organizers which extends laterally with respect to the frame. The organizer supports may be in one or more pairs, the supports of each pair being arranged back-to-back.

Abstract: A limited rotation connection device includes a housing defining a central ole extending therethrough and a central shaft extending through the central hole of the housing and being rotatably mounted to the housing, the housing also defining an annular slot surrounding and extending in substantially perpendicular relation to the central shaft. The device also includes an elongated flexible communication element disposed in the annular slot of the housing and having a first opposite end portion mounted to the central shaft and a second opposite end portion mounted to the housing. The communication element is collapsible and expandable upon rotation of the central shaft relative to the housing so as to allow limited rotations of the opposite end portions of the communication element relative to one another before reversing rotation direction becomes necessary. The first opposite end portion of the communication element is connectable to a first external communication device.

Abstract: An optical fibre organizer, which comprises:1. a plurality of inlet ports through which optical fibers can pass;2. an outlet port through which optical fibers can pass;3. an organizer drum positioned with respect to the ports such that fibers passing from the inlet ports to the outlet port are constrained by an outer surface of the drum to a minimum bend radius at least equal to the critical bend radius of the fibers;in which each inlet port has bend control means adjacent thereto to direct a fibre passing through that port towards the surface of the drum at a minimum bend radius at least equal to the critical bend radius of that fiber.

Abstract: The proximal connector includes a stainless steel cone-shaped ferrule enclosing a proximal end of the optic fiber element. The ferrule is inserted within a matching aperture of a receiving block which is also made of stainless steel. The matching shapes of the ferrule and the aperture of the receiving block ensure effective heat transference from the ferrule into the receiving block. Both ferrule and the aperture are axially symmetric such that any rotation of the proximal connector while inserted into the receiving block does not change the location of the entrance aperture of the optic fiber element. The proximal connector also includes a case having an indented ring. A ball plunger biasing mechanism is mounted within the aperture of the receiving block and is positioned for engaging with the indented ring only while the proximal connector is fully and securely inserted within the aperture.

Abstract: A control jacket houses a line, such as a fiber optic ribbon cable or other conductor, and limits the amount of bending and twisting movement of the line. The jacket preferably includes a multi-dimensional matrix of engagement elements separated by a plurality of gaps and connected by an underlying web structure. As the jacket is bent or twisted, adjacent engagement elements move together into engagement with each other, limiting the bend radius or twist angle of the jacket, and thus of the fiber optic ribbon cable or other protected line. The jacket preferably includes at least one fastening mechanism, allowing the control jacket to be opened along its length for easy insertion and removal of the line as needed. Multiple jackets can be placed end-to-end along the line, to create a composite jacket of any desired length.

Abstract: An object of the present invention is to provide a light guide device which can emit light rays of high directivity with high efficiency irrespective of incident angles, and a light source device using the light guide device which can provide light rays of high directivity with high efficiency irrespective of emitting characteristics of light source lamps, and a liquid crystal display device which is small-sized and can display at very high luminance and is free from color tone changes depending on visual angles over a wide field angle. A substantial point light source is contained in a reflection box having an inside wall coated with a silver reflecting surface and an opening in the shape of a pinhole formed in a surface of the reflection box, and the light guide device is provided in the pinhole-shaped opening. The light guide device is a cylindrical transparent body. An incident end surface of the light guide device has a 1 mm-diameter, and an exit end surface of the light guide device has a 6.