| Patents for G02B 6 - Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings (176,023) | 
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| 06/12/1991 | EP0431698A2 Actively phase matched frequency doubling optical waveguide and frequency doubling system  | 
| 06/12/1991 | EP0431527A2 Optical coupling device using wavelength selective optical coupler  | 
| 06/12/1991 | EP0431318A2 Protection arrangement for a missile guidance wire  | 
| 06/12/1991 | EP0431311A2 Achromatic fiber optic coupler and method of making it  | 
| 06/12/1991 | EP0431281A1 Optical device containing a photonucleable glass, and method of making it  | 
| 06/12/1991 | EP0431279A1 Means for installing an elongate flexible body, such as a fibre cable  | 
| 06/12/1991 | EP0431035A1 Re-entry and reclosure of cable splice case.  | 
| 06/12/1991 | CN1052223A Active fiber optical amplifier having wide band signal wavelength  | 
| 06/12/1991 | CN1012813B Method of soot overcoating optical preform  | 
| 06/11/1991 | US5023947 Optical equalization receiver for lightwave communication systems  | 
| 06/11/1991 | US5023881 Optical  | 
| 06/11/1991 | US5023447 Photo-semiconductor module employing semi-spherical lens to enhance detection  | 
| 06/11/1991 | US5023446 Apparatus for measuring distances with a measuring element operating on an optical basis  | 
| 06/11/1991 | US5023399 Support assembly including a stress limiter for non-metallic cable, and method of fitting the stress limiter  | 
| 06/11/1991 | US5023302 Process for preparation of methacrylimide group containing polymer and light-transmitting fiber comprising polymer made by the process  | 
| 06/11/1991 | US5022752 Echo cancelling circuit for use with laser  | 
| 06/11/1991 | US5022736 Solar ray device for illumination  | 
| 06/11/1991 | US5022735 Fiber splice coating system  | 
| 06/11/1991 | US5022734 Method of modifying an optical waveguide and waveguide so modified  | 
| 06/11/1991 | US5022733 Low-reflection ball lens connector part  | 
| 06/11/1991 | US5022732 Fiber optic intermode coupling single sideband frequency shifter  | 
| 06/11/1991 | US5022731 Device for optical frequency translation and a modulator in which said device is employed  | 
| 06/11/1991 | US5022730 Wavelength tunable optical filter  | 
| 06/11/1991 | US5022728 Device composed of a light guide plate  | 
| 06/11/1991 | US5022634 Optical fibre installation  | 
| 06/11/1991 | US5022607 Coupling fiberoptic lead  | 
| 06/11/1991 | US5022603 Coil of very long optical fibre usable on a wire-guided missile  | 
| 06/11/1991 | US5022602 Fiber dispenser  | 
| 06/11/1991 | US5022600 Winder-unwinder for optical fibre cables  | 
| 06/11/1991 | US5022580 Vernier structure for flip chip bonded devices  | 
| 06/11/1991 | US5022383 Winding type endoscope apparatus  | 
| 06/11/1991 | US5022344 Method and apparatus for applying particulate matter to a cable core  | 
| 06/08/1991 | CA2023360A1 Optical fiber splice retainer and method for it's use  | 
| 06/06/1991 | WO1991008501A1 Apparatus for and method of manufacturing optical fiber cable covered with metal pipe  | 
| 06/06/1991 | WO1991008500A1 Apparatus for and method of manufacturing optical fiber cable covered with metal pipe  | 
| 06/06/1991 | WO1991008079A1 Method and apparatus for manufacturing metal pipe clad optical fiber cable  | 
| 06/06/1991 | DE3939887A1 Support structure for joining 2 optical fibres - comprises high precision grooves made by expansion of material at softening pt. inside tool with correct shape  | 
| 06/06/1991 | DE3939497A1 Visualising corer of optical fibre(s) - irradiating optical fibre by light arc and focussing optical observing members  | 
| 06/06/1991 | CA2046623A1 Apparatus for manufacturing metal tube covered optical fiber cable and method therefor  | 
| 06/06/1991 | CA2046622A1 Apparatus for manufacturing metal tube covered optical fiber cable and method therefor  | 
| 06/06/1991 | CA2046319A1 Apparatus for manufacturing metal tube covered optical fiber cable and method therefor  | 
| 06/05/1991 | EP0430911A1 Optical coupling device  | 
| 06/05/1991 | EP0430868A1 Method and device for stripping the ends of optical cables  | 
| 06/05/1991 | EP0430533A2 Water blocked cable portion and methods of making same  | 
| 06/05/1991 | EP0430532A2 Coupling of optical devices to optical fibers by means of microlenses  | 
| 06/05/1991 | EP0430516A2 A periodic array with a nearly ideal element pattern  | 
| 06/05/1991 | EP0430515A2 Erbium-doped fiber amplifier  | 
| 06/05/1991 | EP0430503A1 Filament gripper  | 
| 06/05/1991 | EP0430361A1 Gap tuned optical waveguide device  | 
| 06/05/1991 | EP0430183A2 Fiber type light wave-length converting apparatus  | 
| 06/05/1991 | EP0430140A2 Instrument display apparatus  | 
| 06/05/1991 | EP0430124A1 Optically double-coupled device, especially for fibre-optic transmission system  | 
| 06/05/1991 | EP0430107A2 Optical connector  | 
| 06/05/1991 | EP0429877A2 Device for positioning optical fibres in connector elements  | 
| 06/05/1991 | EP0429520A1 Orientating optical fibres.  | 
| 06/05/1991 | EP0429457A1 Conduit liner assembly  | 
| 06/05/1991 | CN1052013A Amplifier for optical fiber telecommunication lines and optical fiber telecommunication lines incorporating said amplifier  | 
| 06/05/1991 | CN1051982A Optical fiber splicing device  | 
| 06/04/1991 | US5021072 Hermetic sealing for corrosion resistance; curing heat curable polymeric liquid by inductive heating of carbon; bubble-free  | 
| 06/04/1991 | US5020879 Flexible replica grating  | 
| 06/04/1991 | US5020874 Method of and device for feeding a plurality of optical waveguides into a clamping device  | 
| 06/04/1991 | US5020873 Optical component for accurately locating the end face of an optical waveguide with respect to an optical device  | 
| 06/04/1991 | US5020871 Optical fiber wiring apparatus  | 
| 06/04/1991 | CA1284683C Optical amplifiers  | 
| 06/04/1991 | CA1284678C Assembly for establishing an electrical connection through a duct made of several elements and method for inserting said assembly into said duct  | 
| 06/04/1991 | CA1284600C Oximeter  | 
| 05/30/1991 | WO1991007788A1 Laser diode with built-in signal detector  | 
| 05/30/1991 | WO1991007681A1 Optical image processing  | 
| 05/30/1991 | WO1991007680A2 Telecommunication closures  | 
| 05/30/1991 | WO1991007679A1 A method of and an apparatus for producing an optical multi-fibre cable element  | 
| 05/30/1991 | WO1991007678A1 Manufacture of optical cable  | 
| 05/30/1991 | WO1991007676A1 Fiber to fiber connection  | 
| 05/30/1991 | WO1991007441A1 Photo-setting resin composition and plastic-clad optical fibers produced therefrom  | 
| 05/30/1991 | WO1991007355A1 Process for aligning an optical fibre in a bore, and device for carrying out the process  | 
| 05/30/1991 | WO1991007344A1 An apparatus for unreeling a thread  | 
| 05/29/1991 | EP0429398A2 Connector for an optical fibre and positioning method using the connector  | 
| 05/29/1991 | EP0429368A1 Light-beam focalization device allowing a focal spot with oblong shape to be obtained  | 
| 05/29/1991 | EP0429337A1 Optical head integrable on a hybrid circuit  | 
| 05/29/1991 | EP0429243A2 Beam shaping system using diffraction  | 
| 05/29/1991 | EP0429238A2 Self-supporting coil of optical fiber and method of forming the coil  | 
| 05/29/1991 | EP0429216A2 Hybrid optical isolator, circulator or switch, and systems utilizing same  | 
| 05/29/1991 | EP0429163A1 Optical fiber splicing device  | 
| 05/29/1991 | EP0428951A2 Optical divider for multimode optical fiber systems  | 
| 05/29/1991 | EP0428931A2 Method of splice-free connection of subscribers  | 
| 05/29/1991 | EP0428830A2 Method and apparatus for laying or collecting communication wires  | 
| 05/29/1991 | DE3937695C1 Optical cable for subscriber distribution in housing area - has markings on sheath surface giving unambiguous positions for fibres  | 
| 05/29/1991 | CN1051795A Stamped precision lightguide interconnect centering element  | 
| 05/29/1991 | CN1051794A Active-fiber optical amplifier having a wide pumping band and related active fiber  | 
| 05/28/1991 | US5020152 Fault tolerant-fiber optic coupler/repeater for use in high speed data transmission and the like  | 
| 05/28/1991 | US5020065 Semiconductor laser device  | 
| 05/28/1991 | US5019780 Method and apparatus for monitoring optical fibers during payout  | 
| 05/28/1991 | US5019519 Method for the manufacture of optical semiconductor device  | 
| 05/28/1991 | US5019301 Method of injection molding star-couplers  | 
| 05/28/1991 | US5018865 Photon scanning tunneling microscopy  | 
| 05/28/1991 | US5018848 Laser beam transmitting apparatus  | 
| 05/28/1991 | US5018829 Waterproofing using silane surfactant  | 
| 05/28/1991 | US5018828 Optical fiber  | 
| 05/28/1991 | US5018827 Method for eliminating the temperature sensitivity of an optical fiber and a temperature insensitive optical fiber  | 
| 05/28/1991 | US5018826 Roll manufactured with a light waveguide conductor  | 
| 05/28/1991 | US5018825 Overhead optical transmission system  |