Abstract: Methods, systems, and apparatuses for producing time delays in optical signals are provided. The methods, systems, and apparatuses allow the time it takes for an individual light beam to travel an individual light path to be varied. In one example, the apparatuses have an array of actuator elements and first and second optical elements arranged such that the time it takes for an individual light beam to travel an individual light path between the array of actuator elements and the first and second optical elements is variable.

Abstract: The present invention provides an optical system and method that substantially eliminates or reduces disadvantages and problems associated with previously developed optical visual display systems and methods used for displaying critical visual symbology or rastered imagery in high ambient brightness environments.

Abstract: An object of the present invention is to provide a multiplexer/demultiplexer capable of preventing a decrease in multiplexing/demultiplexing efficiency due to an error in wavelength or due to a crosstalk with other wavelengths. A two-dimensional photonic crystal having holes 22 cyclically arranged is provided with an input waveguide 23 and an output waveguide 24. Located between the two waveguides are two point-like defects 25 and 26, each consisting of a region devoid of the holes 22. From the light including various wavelengths and propagating through the input waveguide 23, the two point-like defects extract a ray of light having a wavelength determined by the shape of the point-like defects and introduce it into the output waveguide 24.

Abstract: A telecommunications assembly including a housing and a plurality of modules mounted within the housing. The modules includes a rear face in which is mounted at least one fiber optic connector. Within an interior of the housing are positioned at least one fiber optic adapters. Inserting the module through a front opening of the housing at a mounting location positions the connector of the module for insertion into and mating with the adapter of the housing. The adapters within the interior of the housing are integrally formed as part of a removable adapter assembly. A method of mounting a telecommunications module within a chassis.

Abstract: An optical device is provided with first and second inputs. A first coupler coupled is coupled to the first input and produces at least a first and second output. A second coupler is coupled to the second input and produces at least a first and second output. A third coupler is coupled to the first output of the first coupler and to the first output of the second coupler. A fourth coupler is coupled to the second output of the first coupler and to the second output of the second coupler. First and second crossing waveguides are provided with an angle selected to minimize crosstalk and losses between the first and second cross waveguides. The first crossing waveguide connects one of the first or second outputs from the first coupler with an input of the fourth coupler. The second crossing waveguide connects one of the first or second outputs from the second coupler with an input of the third coupler. A first phase shifter is coupled to the first and second waveguides.

Abstract: One apparatus embodiment includes an optical emitter and a photodetector. At least a portion of the optical emitter extends a radial distance from a center point. The photodetector provided around at least a portion of the optical emitter and positioned outside the radial distance of the portion of the optical emitter.

Abstract: Optical cable, in particular for submarine connections. A water blocking resin filling composition of reduced hardness is disposed into interstices. Preferably, the resin composition is a polyurethane resin having less than about 35% by weight of a polyol/polyisocyanate mixture and about 60% to about 90% by weight of a mineral oil. The polyurethane resin preferably has less than about 12% by weight of a coupling agent. The cable has an optical core surrounded by a plurality of metallic wires and an outer polymeric sheath. The optical core is of the “tight” type with a plurality of optical fibers embedded into a polymeric matrix disposed around a strength member.

Abstract: There is provided an optical adaptor mounting metal fitting for mounting an optical adaptor through a panel without wobbling and an optical adaptor with the mounting metal fitting attached thereto. The optical adaptor mounting metal fitting includes a joining plate and a pair of facing side plates extending from either side of the joining plate nearly at a right angle, the side plates each have an elastic click engagement formed by cutting out and raising a middle part of the side plate so that a front end thereof closely faces the panel. A first side plate piece that is on a joining plate side of the elastic click engagement, and a second side plate piece that is on an opposite side of the elastic click engagement to the first side plate piece, and first elastic engagements each obliquely extend from a front end of the second side plate piece toward the joining plate and the optical adaptor.

Abstract: A process for preparing terminated fibers comprising: (a) positioning at least one fiber in a ferrule such that a portion of the fiber extends beyond the mating face of the ferrule; (b) affixing the fiber relative to the ferrule; and (c) cleaving the portion of the fiber.

Abstract: A lens assembly for transmitting an optical signal has a light-emitting element that diffuses the optical signal and a collimator lens that converts the optical signal diffused out of the light-emitting element from its diffused light into parallel light. The device also has a condenser lens that gathers the parallel light output from the collimator lens to focus the parallel light into an opening of an optical waveguide. The opening is provided in an end of the optical waveguide. An optical axis of the condenser lens is shifted toward the other 10 end of the waveguide by a predetermined distance with respect to an optical axis of the collimator lens.

Abstract: A method includes incorporating an optical fiber into a buffer tube, wherein the buffer tube has a first length. The buffer tube contains the optical fiber and a filler compound to create a buffer tube assembly. The buffer tube assembly is heated to an elevated temperature for a period of time, wherein the first length of the buffer tube decreases to a second length, such that extra optical fiber length is created relative to the second length. The buffer tube assembly is cooled to stabilize the second length and to retain the excess fiber length in the buffer tube.

Abstract: A method of aligning optical-fibers, including: holding a sheath of an optical-fiber ribbon cord using an optical-fiber holder so that distal ends of optical fibers extending from the sheath are located above grooves of a groove stage; arranging an optical-fiber guide on one side of the sheath, as the sheath is held by the optical-fiber holder, on a first side of the optical-fiber holder, wherein the optical-fiber guide has oblique portions adjacent to transverse sides of the sheath; moving the optical-fiber guide in a first direction toward the sheath so that at least one of the oblique portions aligns the sheath to the transverse center of the optical fiber guides; and moving the optical-fiber guide in a direction opposite the first direction to align the optical-fibers into the grooves of the groove stage.

Abstract: There is provided a holder for an optical fiber ferrule end face grinding apparatus that can make good use of a grinding film, in which the number of optical fiber ferrules held by the holder is greatly increased. The holder includes a holder plate including a plurality of insertion holes into which each of the ferrules is inserted. In the holder plate, the insertion holes are arranged in an area of a certain size extending from the center to the periphery thereof.

Abstract: The present invention provides an optical module with an improved temperature condition surrounding an opto-electronic device. The optical module of the present invention comprises an optical sub-assembly including an opto-electronic device, a first circuit board electrically connected to the optical sub-assembly, an electronic device mounted on the first circuit board, a lower housing for mounting the first circuit board, an upper housing for covering the circuit board and electronic device, and a metal cover for covering the upper housing. Constructed in the optical module are a first heat-dissipating path for dissipating heat from the electronic device to the cover via the upper housing, and a second heat-dissipating path, different from the first heat-dissipating path, for dissipating heat from the optical sub-assembly to the cover by way of the upper housing.

Abstract: An optical waveguide device is provided for receiving light that has a guided mode and an unguided mode. The device comprises an optically transmissive substrate having first and second substantially opposite surfaces, an input end, and an output end. An optical waveguide region is disposed within the substrate and extends from the input to the output. A plurality of electrodes is disposed on the first surface at predetermined locations with respect to the waveguide region. The device includes a plurality of optical barriers each disposed proximate one of the first and second surfaces and positioned to block a different optical path of the unguided mode.

Abstract: A method for manufacturing optical modules having excellent high-frequency properties that can be mass produced at low cost. Such a manufacturing method includes the following steps. First off, an optical device and an optical fiber are placed mechanically on an optical-alignment jig for optically coupling the optical device and optical fiber. Secondly, the optical device and optical fiber placed on the jig are bonded together to form a bonded part using a bonding material. Finally, the bonded part is removed from the jig and mounted to an optical module substrate.

Abstract: A method for concentrating particles, including: placing the particles close to and/or on at least one waveguide of a support, and injecting light radiation into the waveguide causing grouping of particles into one or plural clusters on the waveguides.

Abstract: An electro-optic modulator is formed from all flexible materials, to form a flexible electro-optic modulator. The formation process uses a photoresist which selectively adheres to one material more than it adheres to another material. This allows selective liftoff, where only parts of the substrate are lifted off. For example, this allows silicon ends on the modulator, thereby facilitating pig tailing and also facilitates handling. Another aspect describes testing the bending radius.

Abstract: A light emitting end face side front end part of an optical fiber bundle 16 is covered by a sleeve member 13 and an emitting part outer cover 14. A glass rod holding member 42, which holds a glass rod 40, is mounted to emitting part outer cover 14. Glass rod 40 is fixed to glass rod holding member 42 by means of positioning pins 44 and a light incidence end face 40i thereof opposes a light emitting end face 16o of optical fiber bundle 16. A light emitting end face 40o of glass rod 40 has a rectangular shape. The light emitting from light emitting end face 40o is made uniform in illuminance across the entirety of its cross section and the cross section thereof is shaped to a rectangular shape in the process of being propagated while being totally reflected at the boundary surface of glass rod 40.

Abstract: An optical harness assembly and method are provided. The optical harness assembly includes at least one optical harness cable having a termination end; at least one electrical connector having connector pins; and at least one active connector conversion unit coupled between the termination end of the optical harness cable and the electrical connector. A method for retrofitting an optical harness assembly into an existing platform is disclosed. The method includes removing a legacy wiring harness; installing an optical harness assembly having electrical connectors and an active connector conversion unit; and testing the compatibility of connector pins of the electrical connector to the active connector conversion unit. In another embodiment the method includes: identifying electrical signals present on each pin of each electrical connector presentation; programmatically adjusting an interface based on the identified electrical signals present; and mapping the electrical connector signals to digital signals.