子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 41 | Cladding-pumped optical fiber and methods for fabricating | US10875749 | 2004-06-24 | US07003206B2 | 2006-02-21 | Kanishka Tankala; Adrian Carter |
| Disclosed is an optical fiber article for receiving pump radiation of a first wavelength for amplifying or generating radiation of a second wavelength. The optical fiber article includes a core for propagating light of the second wavelength. The core has a first index of refraction and includes a rare earth material. A cladding surrounds the core and has a second index of refraction that is less than the first index of refraction. The outer circumference of the cladding can include a plurality of sections, where the plurality of sections includes at least one substantially straight section and one inwardly curved section. The optical fiber article can also include at least one outer layer surrounding the cladding, where the index of refraction of the outer layer is less than the second refractive index. Methods for producing the optical fiber article are also disclosed, as well as methods for providing a preform for drawing such an optical fiber article. | ||||||
| 42 | Optical devices including microstructured fiber sections disposed for transverse signal propagation | US10691947 | 2003-10-23 | US06996317B2 | 2006-02-07 | Benjamin J. Eggleton; Mikio Ogai; Mikhail Sumetsky |
| A microstructured optical component is formed from an optical preform fabricated to include one ore more internal regions of differing refractive index. The preform is drawn into a fiber and sliced into relatively long individual fiber segments, each segment thus forming a microstructured optical component. An optical signal may then be coupled through a sidewall of the component in a direction parallel to the endfaces of the segment. A more complex structure can be formed by grouping together a plurality of fiber segments and performing an additional drawing and slicing process. | ||||||
| 43 | Optical fiber and production method thereof | US10537179 | 2004-08-12 | US20060010921A1 | 2006-01-19 | Atsushi Mori; Masao Kato; Kouji Enbutsu; Shinichi Aozasa; Kivoshi Oikawa; Takashi Kurihara; Kazuo Fujiura; Makoto Shimizu; Kouji Shikano |
| An optical fiber, which has a zero-material dispersion wavelength equal to or greater than 2 μm, and a high nonlinear susceptibility χ3 equal to or greater than 1×10−12 esu, and uses tellurite glass having sufficient thermal stability for processing into a low loss fiber, employs a PCF structure or HF structure having strong confinement into a core region. This enables light to propagate at a low loss. The size and geometry of air holes formed in the core region, and the spacing between adjacent air holes make it possible to control the zero dispersion wavelength within an optical telecommunication window (1.2-1.7 μm), and to achieve large nonlinearity with a nonlinear coefficient γ equal to or greater than 500 W−1 km−1. | ||||||
| 44 | Double clad rare earth doped fiber | US11039041 | 2005-01-19 | US20050158006A1 | 2005-07-21 | Joohyun Koh; Christine Tennent; Donnell Walton; Ji Wang; Luis Zenteno |
| An optical fiber comprising: (i) a silica based, rare earth doped core having a first index of refraction n1; (ii) a silica based inner cladding surrounding the core having a second index of refraction n2, such that n1>n2; (iii) a silica based outer cladding surrounding the inner cladding having a third index of refraction n3 such that n2>n3, wherein inner cladding diameter is at least 125 μm. | ||||||
| 45 | Radially varying and azimuthally asymmetric optical waveguide fiber | US09786559 | 2001-03-02 | US06778747B1 | 2004-08-17 | Venkata Adiseshaiah Bhagavatula; Robert Martin Hawk |
| Disclosed is a single mode waveguide fiber and a method of making a single mode or multimode waveguide fiber which has an azimuthally and radially asymmetric core. This asymmetry provides additional degrees of freedom for use in forming a waveguide having particular performance characteristics. | ||||||
| 46 | Polarization retaining fiber | US10014313 | 2001-12-11 | US06587624B2 | 2003-07-01 | William R. Christoff; Paul D. Doud; John W. Gilliland |
| A glass preform is drawn into a fiber. Holes, running the length of the preform, collapse during the drawing, causing the core to have an elliptical cross section. | ||||||
| 47 | Method of making a dispersion-managed optical fiber with varying the feed rates of an RIT process | US09125187 | 1998-08-13 | US06301934B1 | 2001-10-16 | Michael S. Dobbins |
| The invention is a method of making an optical fiber or cane (600) that has optical properties that vary axially. Core glass (100) and clad glass (200) are fed into a furnace to form the cane or fiber. The velocities of the feeding of the clad and core are controlled so that the total combined mass per unit time is constant. The diameter of the core (604) varies along the length of the fiber or cane in accordance with the control of the velocities. The variance in the core diameter results in the variance of the axial optical properties of the fiber or cane. | ||||||
| 48 | Optical fiber for sensors including holes in cladding | US323039 | 1994-10-14 | US5627921A | 1997-05-06 | Anne I. B. Lidgard; Leif G. Stensland; K. A. Mikael berg |
| An optical fiber intended to be used as a sensor is of the kind suitable for communication and has a longitudinal cavity or hole which can be intentionally closed or has a more narrow shape at definite positions in the longitudinal direction of the fiber. The cavity, the diameter of which can be of the magnitude of order of 5 .mu.m-50 .mu.m, is filled with a material changing its volume depending on physical quantities in the fiber environment. The hole can be closed or made narrower at different positions in the longitudinal direction of the fiber for instance by locally heating the fiber by a pulsed laser beam. | ||||||
| 49 | Method of producing elliptic core type polarization-maintaining optical fiber | US068645 | 1993-05-28 | US5482525A | 1996-01-09 | Hiroshi Kajioka; Kohdo Yamada; Masashi Nakamura; Kazuya Murakami; Yuuetsu Takuma |
| A method of producing an elliptic core type polarization-maintaining optical fiber comprises the steps of providing a glass rod comprising a cladding glass layer around the periphery of a core glass layer, the cladding glass layer having a softening point higher than the softening point of the core glass layer, removing two side surface portions of the glass rod by machining along the axial direction of the glass rod to form a machined rod noncircular in cross section, outside depositing fine silica glass particles on the periphery of the machined rod, followed by sintering to provide a support glass layer having a softening point higher than the softening point of the cladding glass layer, and drawing the thus obtained glass rod body as an optical fiber preform. Since the portion for constituting the core of the optical fiber is formed by machining, the core is permitted to have a high ellipticity. An optical fiber with the desired size and birefringence index is obtained by regulating the conditions of production. | ||||||
| 50 | Method and apparatus for fabricating an oval cross-sectional optical waveguide | US46983 | 1993-04-13 | US5366530A | 1994-11-22 | Dieter Weber |
| The invention concerns the method and apparatus to fabricate an oval cross-sectional optical waveguide which only allows light to propagate in one direction of polarization. The optical waveguide preform for such an optical waveguide according to the modified chemical vapor deposition (MCVD) process is produced in such a way, that cooling is used to provide the substrate tube with an oval or elliptical temperature cooling profile. The apparatus for carrying out the fabrication method includes a cooling device (5) mounted to a support (3) beside a gas burner (4) and consists of two nozzles (10) directed toward the substrate tube (2) so as to direct cooling gas toward the substrate tube as glass layers are deposited thereon to produce core and cladding of the optical waveguide. The nozzles rotate synchronously with the substrate tube. | ||||||
| 51 | Self-aligning optical fiber directional coupler and fiber-ring optical rotation sensor using same | US778407 | 1985-09-20 | US4755021A | 1988-07-05 | Richard B. Dyott |
| A continuously drawn optical fiber comprising a core and cladding having different refractive indices and forming a single-mode guiding region, and the outer surface of the fiber having a cross-section forming a pair of orthogonal exterior flat surfaces so that the location of the guiding region can be ascertained from the exterior geometry of the fiber, the guiding region being offset from the center of gravity of the transverse cross-section of the fiber and located sufficiently close to at least one of the flat surfaces to allow coupling to a guided wave through that surface by exposure or expansion of the field of the guiding region. | ||||||
| 52 | Method of manufacturing a passive fiber optic component | US853309 | 1986-04-17 | US4698084A | 1987-10-06 | Adrianus P. Severijns; Petrus J. W. Severin; Cornelus H. M. Van Bommel |
| A method of manufacturing a passive fiber optic component, in which two or more fibers are each bared at one end by removal of the outer coating of the fiber the bare portions of the fibers are etched to produce a cylindrical end portion which adjoins a conical portion. Subsequently, the fibers (1) are arranged with their etched portions in a capillary tube which is sealed at one end. The tube is then evacuated and is fused with the etched portions of the fibers to form a solid rod with a rotationally symmetric distribution of the end portions of the fibers. The fibers are etched to such a diameter that after fusion of the fibers with the tube, the fused fibers ends have a circular cross-section substantially equal to the cross-section of a single fiber core. An end face is formed on the rod by cleaving or by grinding, and by polishing to obtain a fused fiber head. The fiber head forms a fiber-optic component itself, or forms a basic element for a great number of fiber-optic components such as splitters and couplers. | ||||||
| 53 | Polarization locked optical fiber and method | US602739 | 1984-04-23 | US4630889A | 1986-12-23 | John W. Hicks, Jr. |
| A polarization locked optical fiber having a fiber core suspended by a thin cladding web within a tube with a prestress acting along the web to fixedly polarize the core. Preferably, the tube and web are glass materials having different thermal characteristics to provide a built-in stress upon drawing of the web and tube assembly. In the preferred method, an optical fiber preform is machined to a rectangular form and drawn within an enclosing tube to provide the stressed web arrangement. | ||||||
| 54 | Method of forming optical fiber having laminated core | US500004 | 1983-06-01 | US4528009A | 1985-07-09 | Arnab Sarkar |
| A process for manufacturing a preform from which is drawn an optical fiber, the core of which comprises layers of different glass composition. In one embodiment, the known CVD process for making preforms is modified by halting rotation of the substrate tube while the tube is asymmetrically heated by a source that traverses the length of the tube. A vapor mixture flowing through the tube reacts only near that region of the inner surface of the tube that is being heated. This forms a longitudinal strip of glass particles. The flow of reactants stops, the tube is rotated, and it is traversed by heating means which heats the tube to a temperature sufficiently high to fuse the glass particles and forming a longitudinal strip of glassy material. | ||||||
| 55 | Method of forming laminated single polarization fiber | US538325 | 1983-10-03 | US4494968A | 1985-01-22 | Venkata A. Bhagavatula; Donald B. Keck |
| A process for manufacturing a preform from which is drawn an optical fiber, the core of which comprises layers of different glass composition. Layers of glass, adjacent ones of which have different composition, are deposited on a substrate. A process is preferred whereby layers of glass soot are deposited. The soot is consolidated and the resultant laminated glass structure is severed to form an elongated azimuthally asymmetric laminated core structure. A layer of cladding glass is added to the core structure, and the resultant preform is drawn into an optical fiber. | ||||||
| 56 | Method for the production of one-material optical fibers | US676351 | 1976-04-12 | US4056377A | 1977-11-01 | Franz Auracher |
| A method for producing one-material optical fibers having at least one light conducting component supported in a protective sleeve or casing characterized by forming a one-piece blank having an open cross section by either pressing, continuous casting, chill casting or rolling, working the blank to close the cross section, heating the blank with the closed cross section to a suitable temperature for drawing and drawing the blank with the closed cross section into the one-material optical fiber having a closed cross section. Preferably, the protective casing during the step of forming is formed in two casing components having edges extending along the length of the blank and spaced apart and the step of working the blank forces the edges into engagement with each other to form a closed cross section. | ||||||
| 57 | Method for the production of one-material optical fibers | US676678 | 1976-04-14 | US4046537A | 1977-09-06 | Ulrich Deserno; Franz Auracher |
| A method for the production of single-material optical fibers having a light conducting core supported within a protective sleeve by at least one extremely thin support component characterized by providing a blank having a core and at least one support component disposed within a protective sleeve, heating the blank to a drawing temperature, drawing the blank into a form of an optical fiber and either during the drawing or subsequent thereto, transversely stretching the support component to reduce the ratios of the thickness of the support component to its transverse width and to the thickness of the core of the fiber. In one embodiment of the invention, subsequent to the drawing, a fluid such as a gas under excessive pressure is applied internally to the protective sleeve to expand and inflate the sleeve to transversely stretch the support component. In a second embodiment of the invention, a transverse stretching of the support component is accomplished by asymmetric radial deformation of a circular or noncircular fiber or blank. | ||||||
| 58 | Gas discharge display device having offset electrodes | US350425 | 1973-04-12 | US4038577A | 1977-07-26 | Wolfgang W. Bode; Glenn H. Dunlap; Anthony M. Kobylak; Raymond S. Richards; Lawrence V. Pfaender |
| Methods of making complex glass panel structures having precision dimensions. Glass tubes, rods, plates or other large glass structures are redrawn individually or in groups to filamentary or capillary size tube or gas continuums which are assembled as a monolayer to form a gas discharge panel, for example. Complex glass structures having precision uniform cross-sectional dimensions are constructed. Various novel glass structures and/or conductor configurations and methods of assembling are disclosed. | ||||||
| 59 | Process of manufacturing a fiber bundle | US490782 | 1965-09-24 | US3990874A | 1976-11-09 | Ronald Schulman |
| In the disclosed process, a multiplicity of like fibers of fusible material are arranged in a bundle which is brought to the drawing temperature. The bundle is drawn to reduce its cross sectional area while retaining its cross sectional configuration. During the drawing step, a fluid pressure is maintained in the peripheral rows of fibers which exceeds that of the remaining fibers of the bundle to maintain a substantially uniform diameter of the fiber elements in the resulting drawn fiber bundle. | ||||||
| 60 | Channel multiplier assembly and method of manufacture thereof | US3678328D | 1968-11-01 | US3678328A | 1972-07-18 | CROSS FRED H; DERADOORIAN BAGDASAR |
| A bundle of individual channel multipliers stacked to form a multiplier array, the individual channels being fabricated of a lower temperature softening glass and the bundle being inserted into a higher temperature softening glass tube, the walls of the individual channels being expanded to fill the interstices within the higher softening temperature tube.
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