Matches 251 - 300 out of 568 < 1 2 3 4 5 6 7 8 9 10 11 12 >
Match Document Document Title
5881197 Optical fibre and optical fibre device  
An optical fiber has a cladding glass layer surrounding a glass core, in which a region (preferably annular) of the optical fiber partially overlapping the cladding and/or the core is formed of...
5856882 Optical fibers and optical fiber amplifiers  
Disclosed are an optical fiber comprising a core and a cladding wherein the core is composed of a In-Ga-Cd-Pb halide glass and the clad composed of a halide glass possesses a refractive index of...
5857052 Lightguide filled with a liquid containing dimethylsulfoxide  
Liquid lightguide having a cladding made from a tube of fluorocarbon resin and filled with a light conducting liquid containing dimethylsultoxide (DMSO).
5841933 Optical waveguide fiber containing titania and germania  
Optical waveguide core compositions comprising a core containing two dopants in a silica based glass, wherein one of the dopants is titania. The core composition serves to suppress the presence of...
RE35946 Optical fibre amplifier with fluorescent additive and method of amplifying signals using same  
An optical fibre for use in fibre lasers has the lasing additive eg Er 3 +, concentrated in center of the core. Preferably the core has an inner region which contains the additive and an outer...
5829445 Methods for laser treatment of tissue  
A new optical fiber and method of manufacturing the same developed for use with surgical laser systems. The fiber core utilizes an ultra-low expansion (ULE) material. The preferred ULE fiber...
5828802 Self-tuning optical waveguide filter  
A self-tuning optical waveguide filter for attenuating a lower power light signal at λ 1 more than a higher power signal at λ 2 comprises a length of single core waveguide and a light injector...
5822488 Single-mode optical fiber with plural core portions  
The present invention relates to a single-mode optical fiber having a configuration which enables lowering of dispersion slope while securing a sufficient MFD. This single-mode optical fiber has a...
5818983 Optical integrated circuit, optical circuit waveguide device and process for oriented, selective growth and formation of organic film  
An optical integrated circuit wherein the waveguide network is constructed of a passive waveguide and a functional material is used on the functional portions, an optical circuit device which uses...
H001754 Optical glass fibers, apparatus and preparation using reactive vapor transport and deposition  
A new method for preparing low loss multimode and monomode glass optical fibers which avoids casting or pouring the core and clad melts is disclosed. The new technique is based on a...
5812729 Very high numerical aperture light transmitting device  
A new light-transmitting device using a SCIN glass core and a novel calcium sodium cladding has been developed. The very high index of refraction, radiation hardness, similar solubility for rare...
5802235 Dispersion compensating fiber and its manufacturing method  
A dispersion compensating fiber is provided which is capable of reducing the birefringence of the core caused in spinning to suppress an increase in polarization mode dispersion due to the...
5802234 Dispersion compensating optical fiber, and communication system comprising same  
Known dispersion-compensating (DC) optical fibers typically are sensitive to small changes in fiber parameter (e.g., fiber diameter and/or core refractive index), and thus are difficult to...
5799125 Rare earth doped optical fiber  
A rare earth doped optical fiber consisting of a first core doped with a rare earth element and having a relative index difference ranging from about 0.76% to about 1.5%, a second core surrounding...
5796903 Heavy metal-oxide glass optical fibers for use in laser medical surgery and process of making  
An improved optical glass fiber for transmitting mid infrared wavelength laser light in surgical instruments, includes a heavy-metal oxide component, preferably GeO 2 doped with heavier cations...
5790726 Optical waveguide and process for producing it  
This invention provides an optical waveguide having diffraction gratings with sufficiently high reflectivity, a waveguide member for obtaining the optical waveguide, and a production process...
5774620 Fluoride glass fiber  
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....
5772915 Glass compositions  
A halide glass composition contains iodide and/or bromide. In addition the halide content preferably includes chloride. The preferred metal composition includes no aluminium and 1-10 mole % of...
5763081 Glass body for optical fiber method of selecting the same optical fiber and method of making thereof  
A glass body for optical fiber containing GeO 2 --SiO 2 glass in a core portion thereof, in which the GeO 2 --SiO 2 glass has an absorbance at 5.16 eV of at least 1/mm but not higher than...
5764829 Optical signal shaping device for complex spectral shaping applications  
The present invention provides an optical signal shaping device, such as a long period grating, for use with an optical fiber having a core of a first prescribed refractive index n 1 and a...
5764661 Laser glasses and laser glass fibers  
Disclosed are laser glasses composed of a Ga--Na--S glasses doped with one or more kinds of activating ions, laser glass fibers comprising a core and a clad wherein the core is composed of the...
5761366 Optical fiber with smooth core refractive index profile and method of fabrication  
A method of fabricating a dispersion shifted optical fiber with a smooth annular ring refractive index profile has the steps of heating a quartz tube with an external oxygen or hydrogen burner and...
5740297 Dispersion-compensating fiber and method of fabricating the same  
This invention relates to a dispersion-compensating fiber which can be drawn at a lower temperature and can further reduce optical transmission loss. This dispersion-compensating fiber comprises a...
5734773 Multicore plastic optical fiber for light signal transmission  
The present invention relates to a multicore plastic optical fiber for light signal transmission comprising 7 or more cores having a diameter of 50 to 200 μm which are covered with a cladding...
5710852 Optical waveguide for fiber-optic amplifiers for the wavelength region around 1550 nm  
An optical waveguide for fiber-optic amplifiers is disclosed where the Progression of the fluorescence band of optical waveguides that are doped with erbium and aluminum can be additionally...
5708669 Article comprising a cladding-pumped optical fiber laser  
A cladding pumped optical fiber laser comprises a length of optical fiber having a rare earth-doped region of diameter d RE >d 01 where d 01 is the mode diameter of the LP 01 mode of the...
5708752 Fluoride optical fiber for high power laser transmission  
A high power laser transmitting fluoride glass fiber of an enhanced 2.94- μm laser damage threshold value is disclosed, in which either of the core with a high refractive index and the cladding...
5703975 Interferometric switch  
A compact monolithic interferometric switch such as a Mach-Zehnder switch is formed such that one of the waveguide paths between the input and output couplers contains a material having exhibits a...
5695880 Lead-containing fluoride glass, optical fiber and process for producing it  
Lead-containing fluoride glass comprises 50-70 mol % of ZrF 4 , 3-5 mol % of LaF 3 , 0.1-3 mol % of YF 3 , and 2-15 mol % of NaF and/or LiF and/or CsF, where LaF 3 +YF 3 =4.5-6 mol %, and further...
5694500 Optical amplifier operating at 1.3 microns useful for telecommunications and based on dysprosium-doped metal chloride host materials  
Dysprosium-doped metal chloride materials offer laser properties advantageous for use as optical amplifiers in the 1.3 μm telecommunications fiber optic network. The upper laser level is...
5689578 Polarized wave holding optical fiber, production method therefor, connection method therefor, optical amplifier, laser oscillator and polarized wave holding optical fiber coupler  
The polarization-maintaining optical fiber 10 of the present invention is designed so that a plurality of core portions 12a,12b which have a high refractive index is provided in parallel along a...
5684908 Flexible liquid core light guide with focusing and light shaping attachments  
A liquid light guide system for ultraviolet light is disclosed that has a light shaping arrangement for the emitted light, a stable liquid core and sheath and reliable and effective end closures.
5675689 Illuminating equipment with a liquid-filled light guide  
Illuminating equipment with a light source and a liquid light guide, which is coupled optically to the light source and the liquid core of which contains a mixture of heavy and light water in a...
5651085 All fiber attenuator  
An optical attenuator uses a segment of attenuating fiber interposed in the optical path. The attenuating fiber is produced by using a solution doping technique to introduce transition or rare...
5647039 Optical switching system and devices using a long period grating  
The present invention provides an optical switching system for use with an optical fiber that has a core of a prescribed refractive index and a cladding and that is configured to carry an optical...
5647040 Tunable optical coupler using photosensitive glass  
An optical coupler 10 has two fibers 20, 30 that are adjacent each other in a coupling region 12. One of the fibers has a clad doped with a photosensitive glass, such as germania. The...
5629532 Diamond-like carbon optical waveguide  
An optical circuit device has a carbon optical waveguide structure which has a substrate. A first carbon layer is atop the substrate and has a first refractive index. A carbon optical waveguide...
5598491 Optical fiber amplifier and optical fiber transmission apparatus  
The optical fiber amplifier includes a rare earth doped optical fiber and a pumping light source for outputting pumping light for pumping the rare earth doped optical fiber, the optical fiber...
5574820 Radiation hardening of pure silica core optical fibers and their method of making by ultra-high-dose gamma ray pre-irradiation  
A process for radiation hardening a pure-silica-core fiber, the process comprising the steps of: (a) providing a pure-silica-core fiber having a core index of refraction and having an outer...
5563979 Erbium-doped planar optical device  
An active optical device comprises a glass, waveguiding structure disposed on a substantially planar principal surface of a substrate. The structure includes a silica-based, erbium-doped active...
5559907 Method of controlling polarization properties of a photo-induced device in an optical waveguide and method of investigating structure of an optical waveguide  
A method of controlling the polarization properties of a photo-induced device in an optical waveguide and a method of investigating the structure of a light guiding body such as an optical...
5537505 Transparent glass-ceramics  
The present invention is directed to the preparation of two groups of transparent glass-ceramics exhibiting high optical clarity and containing essentially only one crystal phase. The first group...
5526459 Erbium-doped silica optical fiber preform  
A manufacturing method for erbium doped silica, having a soot formation process, in which a silica glass soot is deposited on a seed rod for forming a soot preform in a porous state on the seed...
5526371 Pumping arrangements for arrays of planar optical devices  
Plural planar optical devices are simultaneously pumped by a single pumping source. Various arrangements for accomplishing such pumping are disclosed. By utilizing these arrangements, the topology...
5513284 Method and a device for correlating two or more optical pulse signals  
The object of the invention is to provide a method which makes it possible to determine the correlation between two optical signals, which makes it possible to correlate two optical signals,...
5506925 Radiolytic modification of birefringence in silica planar waveguide structures  
A method for reducing birefringence in a silicate waveguide structure having a waveguide core and cladding includes the step of selecting an irradiation energy that induces compaction in the...
5500054 Superemissive light pipes and photovoltaic systems including same  
A superemissive light pipe includes a photon transmitting optically transparent host having a body and oppositely arranged end portions. In one embodiment, superemissive material is disposed within...
5492776 Highly oriented metal fluoride thin film waveguide articles on a substrate  
A highly oriented thin film of specific barium fluoride materials deposited at low temperatures are useful as Upconversion waveguides.
5491767 Germanate glass for mid-infrared medical optical fiber  
This invention relates to a family of rugged, non-toxic, high damage threshold, fiberizable, infrared transmitting germanate glasses that are suitable for medical laser delivery. They possess...
5491770 Copolymers for optical fibers  
A copolymer for optical fiber applications is the polymerization product of a mixture comprising a fluorinated itaconate and an alkyl (meth)acrylate.
Matches 251 - 300 out of 568 < 1 2 3 4 5 6 7 8 9 10 11 12 >