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| Number | Title | Issue Date |
| 7891214 | Method of manufacturing grin lens and grin lens The manufacture of a GRIN lens using a sol-gel process includes forming a wet gel from an alcohol solution containing a silicon alkoxide, a dopant alkoxide, and an aluminum alkoxide, first, an alcohol solution containing the silicon alkoxide and the aluminum alkoxid... | 02/22/2011 |
| 7536876 | Method for forming a longitudinal solid body within an optical fiber A method of forming a longitudinal solid body within at least one longitudinal hole formed in an optical fiber, comprising the steps of placing a first end and a portion of the optical fiber in a heating chamber; keeping a second end of said optical fiber outside of... | 05/26/2009 |
| 7428360 | Optical waveguide sensor and method of manufacture An optical waveguide environmental sensor is provided that is capable of detecting a target gas or liquid in the ambient environment in an advantageously short period of time. The waveguide is preferably in the form of an optical fiber having a cladding that contain... | 09/23/2008 |
| 7421858 | Optical transmission substrate, method for manufacturing optical transmission substrate and optoelectronic integrated circuit Provided is an optical transmission substrate including: a first substrate; an optical waveguide which has clad covering a core and a periphery of the core and extends on an upper surface of the first substrate; a second substrate provided parallel to the first subs... | 09/09/2008 |
| 7418836 | Photonic bandgap fibers Included among the many structures described herein are photonic bandgap fibers designed to provide a desired dispersion spectrum. Additionally, designs for achieving wide transmission bands and lower transmission loss are also discussed. For example, in some fiber ... | 09/02/2008 |
| 7406243 | Optical fiber array substrate and method for producing the same An optical fiber array substrate 11 has, in one surface thereof, eight V-grooves 12 for securing eight optical fibers 14 aligned in parallel to each other, and V-shaped side grooves 13 formed outside of the respective outermost V-grooves ... | 07/29/2008 |
| 7333703 | Two-dimensional photonic crystal having air-bridge structure and method for manufacturing such a crystal The present invention intends to provide a two-dimensional photonic crystal having a high level of mechanical strength and functioning as a high-efficiency resonator. The two-dimensional photonic crystal according to the present invention includes a slab layer 31... | 02/19/2008 |
| 7327928 | Gas filled hollow core chalcogenide photonic bandgap fiber Raman device and method A hollow core photonic bandgap chalcogenide glass fiber includes a hollow core for passing light therethrough, a Raman active gas disposed in said core, a microstructured region disposed around said core, and a solid region disposed around said microstructured regio... | 02/05/2008 |
| 7317856 | Method of making optical fiber and optical fiber made by the method Provided is a method of manufacturing an optical fiber preform from which an optical fiber having the desired characteristics can easily be produced. The method comprises the steps of: (1) preparing an intermediate preform for manufacturing an optical fiber preform;... | 01/08/2008 |
| 7313293 | Optical power monitoring apparatus, optical power monitoring method, and light receiving device An optical power monitoring apparatus according to an aspect of the present invention has an input optical waveguide, a light receiver, and an output optical waveguide. The input optical waveguide has a light entrance end and a light exit end. The input optical wave... | 12/25/2007 |
| 7309670 | Optical glass; press-molding preform and method of manufacturing same; and optical element and method of manufacturing same The present invention relates to optical glass having a high refractive index, high dispersion, and a low glass transition temperature; a preform comprised of the optical glass for precision press-molding and a method of manufacturing the same; and an optical elemen... | 12/18/2007 |
| 7297646 | Ceramics comprising AlO, REO, ZrOand/or HfO, and NbOand/or TaOand methods of making the same Ceramics comprising (i) at least one of Nb2O5 or Ta2O5 and (ii) at least two of (a) Al2O3, (b) REO, or (c) at least one of ZrO2 or HfO2. Embodiments of ceramics according to the ... | 11/20/2007 |
| 7286739 | Porous optical fiber and method for manufacturing the same A porous optical fiber provided with air holes and a method for manufacturing the same are disclosed. The porous optical fiber includes a core having a first refractivity extended in a longitudinal direction, an external cladding layer having a second refractivity s... | 10/23/2007 |
| 7277619 | Nano-imprinted photonic crystal waveguide This invention relates to a method for forming a nano-imprinted photonic crystal waveguide, comprising the steps of: preparing an optical film on a substrate; preparing a template having a plurality of protrusions of less than 500 nm in length such that the protrusi... | 10/02/2007 |
| 7266259 | Optical fiber microcoil, resonant structure and method of making the same An optical fiber coil of sub-micron diameter is shown to exhibit self-coupling between adjacent turns so as to form a three-dimensional optical resonator of relatively low loss and high Q. As long as the pitch of the coil and propagating wavelength remain on the sam... | 09/04/2007 |
| 7263264 | Method of manufacturing optical waveguide Two or more optical waveguides are placed in a treatment vessel. The optical waveguides in the treatment vessel are treated with a chemical substance containing at least one of deuterium, hydrogen, and a compound thereof. The treating includes causing molecules of t... | 08/28/2007 |
| 7257300 | Method for reducing hydrogen sensitivity of optical fiber A method for reducing the hydrogen sensitivity of an optical fiber is disclosed. The method includes a deuterium treatment step of exposing an optical fiber to a gas mixture including a deuterium, so that the optical fiber makes a contact with the deuterium, and a d... | 08/14/2007 |
| 7238089 | Polishing method for inner surface of tubular brittle material and tubular brittle material obtained by polishing method An object of the present invention is to provide a polishing method for producing, in a relatively short period of time, a tubular brittle material having an inner surface of high surface precision with a maximum roughness Rmax of 0.1 μm or smaller and a... | 07/03/2007 |
| 7228043 | Optical waveguide circuit and manufacturing method thereof An optical waveguide circuit comprising a plurality of first cores (203) arranged at intervals widening as they are away from the branch point or the joining point of optical signal, a clad (205) filling at least these first cores, and second cores ( | 06/05/2007 |
| 7221842 | Coated optical fiber and optical fiber coating system including a fast-gelling primary coating The present invention provides optical fiber coating systems and coated optical fibers. According to one embodiment of the invention, a coated optical fiber includes an optical fiber having a core and a cladding; and a primary coating encapsulating the optical fiber... | 05/22/2007 |
| 7221835 | Ion-reduction-blackened extra-mural absorbing media adapted for inclusion in image-conducting optical fiber arrays and methods of fabricating the same Methods of fabricating extra-mural absorption elements adapted for incorporation in an image-conducting optical fiber array include fabricating various constituent components to be included in an optical fiber bundle from one or more reducible-ion-containing glasses... | 05/22/2007 |
| 7221448 | Test cell for a noble gas polarizer The invention relates to a sample cell with a glass body comprising a gas inlet and a gas outlet and at least one orifice, a plane glass window is fused into the orifice, the shape and size of the window corresponds to the shape and size of the orifice, the orifice ... | 05/22/2007 |
| 7215857 | Process and apparatus for elongating of an optical fibre preform A process and apparatus for elongating an optical fibre preform includes heating the preform so as to soften one region thereof; elongating the preform by submitting the preform to a traction; determining, during the step of elongating, the preform diameter in at le... | 05/08/2007 |
| 7209616 | Method for producing parallel arrays of fibers A method to fabricate solid linear fiber arrays, multi-hole arrays and inverse multi-hole arrays (i.e. space-separated arrays). These arrays may be used for example as capillary arrays, photonic crystal fiber, tissues engineering scaffolds and templates, imaging gui... | 04/24/2007 |
| 7203397 | Polarization maintaining optical fiber coupler and method of manufacturing same There is provided a polarization maintaining optical fiber coupler and a method of manufacturing this polarization maintaining optical fiber coupler in which manufacturing is simplified and excess loss is reduced. A polarization maintaining optical fiber coupler is ... | 04/10/2007 |
| 7190875 | Fiber waveguide formed from chalcogenide glass and polymer In general, in one aspect, the disclosure features a fiber waveguide having a waveguide axis, including a core extending along the waveguide axis and a confinement region extending along the waveguide axis surrounding the core. The confinement region includes a peri... | 03/13/2007 |
| 7187817 | Awg coupler for separating electromagnetic radiation of various wavelength regions, and a telecommunications system A single free-beam region for coupling electromagnetic radiation in and out is provided in order in the case of an AWG coupler for spectrally separating electromagnetic radiation to achieve a more stable thermal characteristic and a space-saving layout. ... | 03/06/2007 |
| 7177490 | Optical waveguide, optical device, and method of manufacturing optical waveguide An optical waveguide is formed on a substrate and includes a curved ridge structure, a curved optical path, and a buffer layer. The curved ridge structure is formed on the substrate so as to have a curvature in a longitudinal direction of the curved ridge structure.... | 02/13/2007 |
| 7164831 | Optical fiber, evaluation and fabrication method thereof An optical fiber having a small increase in loss at a wavelength of approximately 1400 nm involved in a deuterium treatment is provided, and an evaluation method to decide whether an optical fiber is that having such a loss increase, and a fabrication method of an o... | 01/16/2007 |
| 7162130 | Optical fiber with thermoplastic material based coating Optical fiber having a glass portion; at least one protective coating of thermoplastic material having at least one thermoplastic elastomer; the thermoplastic material having the following characteristics: a modulus of elasticity value at +25° C. lower than 150 MPa... | 01/09/2007 |
| 7149395 | Light-enhancing component and fabrication method thereof The present invention provides a light-enhancing component and a fabrication method thereof by using the focused-ion-beam. In the present invention, the surface plasmon polariton structure is coated on the surface of the optical fiber so as to form the light-enhanci... | 12/12/2006 |
| 7147386 | MEMS based handheld fiber optic connector cleaner A Micro-Electro-Mechanical System (MEMS) and double-layer nozzle based high efficiency, lightweight, low cost, compact, portable fiber-optic connector cleaning apparatus useful for various fiber optic communications applications such as fiber optic cable plant maint... | 12/12/2006 |
| 7140202 | Method for manufacturing optical glasses and colored glasses at low temperatures The invention relates to a method for manufacturing optical glasses and colored glasses with the aid of a fluid phase sintering process from a basic material encompassing at least SiO.sub.2 powder as well as additives for reducing the temperature of the fluid phase ... | 11/28/2006 |
| 7130522 | Method and structure for two-dimensional optical fiber ferrule A method is provided for making ferrules for connecting optical fibers to other optical fibers or to an optical input device such as an optical chip. The method utilizes ceramic greensheets or silicon wafers. In one method, the greensheets are stacked and laminated ... | 10/31/2006 |
| 7113524 | Narrow band high power fibre lasers with extended wavelength coverage A fibre laser comprises a fibre light guide (3) having an active medium, a laser as pumping source (1) and a first pair of Bragg gratings (6, 8) forming a first resonator (4). The first pair of Bragg gratings (6, 8) resonates the p... | 09/26/2006 |
| 7106932 | Method and apparatus relating to optical fibers A method of joining a first optical fiber (110) to a second optical fiber (130) comprises the steps of: (i) providing a preform element (10) comprising material defining a primary elongate cavity (40); (ii) inserting the first optical fib... | 09/12/2006 |
| 7103245 | High density integrated optical chip A high density integrated optical chip. The optical chip features an optical function connected to a low minimum bending radius dielectric waveguide, and a large mode field size dielectric waveguide to interface with an external optical device, such as an optical fi... | 09/05/2006 |
| 7099546 | Method for making a plastic graded index optical fiber and resulting graded index optical fiber The present invention concerns a method of manufacturing a graded index plastic optical fiber having an index that varies continuously between the center and the periphery of the fiber, from at least one polymer P and at least one reactive diluent D1 to allow the re... | 08/29/2006 |
| 7085469 | Process for producing three-dimensional polyimide optical waveguide This invention provides a process for producing a three-dimensional polyimide optical waveguide, which comprises: (I) irradiating a polyamic acid film with a laser beam while converging the laser beam at an inside portion of the film and relatively moving the light ... | 08/01/2006 |
| 7085450 | Fabrication of structures in an optical substrate A system and method for fabricating structures in an optical substrate. An optical element produces first and second write beams that intersect at a first intersection location at the optical substrate. The first intersection location includes a fringe pattern produ... | 08/01/2006 |
