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    DEVICE AND METHOD FOR DRAWING OPTICAL WAVEGUIDE FIBER
    1.
    发明专利
    DEVICE AND METHOD FOR DRAWING OPTICAL WAVEGUIDE FIBER 失效

    公开(公告)号：JP2001106544A

    公开(公告)日：2001-04-17

    申请号：JP2000248107

    申请日：2000-08-18

    Applicant: CORNING INC

    Inventor： HARVEY JILL A ,  HAWTOF DANIEL W ,  SPICER HENRY A

    IPC: G02B6/00 ,  C03B37/027 ,  C03B37/029

    Abstract: PROBLEM TO BE SOLVED: To provide a method and device for drawing an optical waveguide fiber which minimizes the fiber bow induced by the deviated stress in the clad layer of the fiber. SOLUTION: The fiber 11 is drawn from a preform 20 heated in a drawing furnace 12. The gas introduced into the top 21 of the furnace advances through the inside of the furnace 12 into a tube 31 and forms a boundary layer adjacent to the fiber. The tube 31 isolates the fiber 11 from the ambient atmosphere and the boundary layer of the gas formed in the furnace is maintained in a substantially uniform state until the temperature sufficiently high for the viscosity of the clad layer of the fiber to minimize the deviated stress in the circumferential direction of the fiber is attained.

    HIGHER WAVELENGTH OPTIMIZED OPTICAL FIBER WAVEGUIDE
    2.
    发明申请
    HIGHER WAVELENGTH OPTIMIZED OPTICAL FIBER WAVEGUIDE 审中-公开
    高波长优化光纤波形

    公开(公告)号：WO0127667A3

    公开(公告)日：2001-06-14

    申请号：PCT/US0025362

    申请日：2000-09-15

    Applicant: CORNING INC

    Inventor： BHAGAVATULA VENKATA A ,  GIROUX CYNTHIA B ,  HAWTOF DANIEL W

    IPC: G02B6/02 ,  G02B6/036 ,  H04B10/16 ,  H04B10/17 ,  G02B6/16

    CPC classification number: G02B6/02004 ,  G02B6/03611 ,  G02B6/4403

    Abstract: Single mode optical fiber waveguides with reduced bending losses for wavelength range of 1300 nm to 1700 nm are disclosed. The extended ranges are achieved by altering the optical characteristics of the fiber, namely, the MAC number, the mode field diameter ("MFD"), and the cut-off wavelength. The single mode fibers disclosed exhibit a lower MFD and higher cut-off wavelength. In addition, optical fiber transmission systems, wave division multiplexing ("WDM") systems, and optical fiber ribbon cables are disclosed that incorporate the single mode optical fiber. Figure 2 shows the refractive index profile as a function of the fiber radius. Figure 6 illustrates a ribbon cable (700) with 4 fibers in a matrix material (708). Each fiber consists of a central core (702), a cladding layer (703), a primary (704) and a secondary polymer layer (705) and a colored ink coating layer (706).

    Abstract translation: 公开了在1300nm至1700nm的波长范围内具有减小的弯曲损耗的单模光纤波导。 通过改变光纤的光学特性，即MAC数，模场直径（“MFD”）和截止波长来实现扩展范围。 所公开的单模光纤显示较低的MFD和更高的截止波长。 此外，公开了并入单模光纤的光纤传输系统，波分复用（“WDM”）系统和光纤带状电缆。 图2示出了作为光纤半径的函数的折射率分布。 图6示出了具有基体材料（708）中的4根纤维的带状电缆（700）。 每个纤维由中心芯（702），包覆层（703），初级（704）和次级聚合物层（705）和着色油墨涂层（706）组成。

    OPTICAL GAIN FIBERS
    3.
    发明公开
    OPTICAL GAIN FIBERS 审中-公开
    光学增强纤维

    公开(公告)号：EP1247315A4

    公开(公告)日：2003-04-23

    申请号：EP00975341

    申请日：2000-10-23

    Applicant: CORNING INC

    Inventor： CHU POLLY W ,  ELLISON ADAM J G ,  GOFORTH DOUGLAS E ,  HAWTOF DANIEL W ,  WHALEN JOSEPH M

    IPC: G02B6/00 ,  C03C3/095 ,  C03C13/04 ,  H01S3/06 ,  H01S3/067 ,  H01S3/10 ,  H01S3/16 ,  H01S3/17 ,  G02B6/26

    CPC classification number: C03C3/06 ,  C03C3/083 ,  H01S3/06716 ,  H01S3/06754 ,  H01S3/1601 ,  H01S2301/04

    Abstract: Disclosed are optical gain fibers which include an erbium-containing core and a cladding surrounding the core and which have ripple of less than about 25 % over about a 40 nm wide window or ripple of less than about 15 % over about a 32 nm wide window, or both. In one embodiment, the optical gain fibers are pumpable at 980 nm and at 1480 nm. In another embodiment, the optical gain fibers are fusion sliceable. In yet another embodiment, the core includes oxides erbium; the cladding includes silicon dioxide; and the optical gain fiber has a passive loss of less than about 0.5 % of the peak absorption of the erbium absorption band in the vicinity of 1530 nm. The optical gain fibers of the present invention have a wider gain window, improved flatness across the gain window, and/or increased gain as compared to conventional optical gain fibers. Accordingly, they are useful in amplifying optical signals, particularly signals which need to be repeatedly amplified over the course of a long-haul transmission, without losses in the signal quality that are commonly encountered in conventional optical signal amplifying methods.

    METHODS FOR MANUFACTURING MICROSTRUCTURED OPTICAL FIBER WITH ARBITRARY CORE SIZE
    6.
    发明专利
    METHODS FOR MANUFACTURING MICROSTRUCTURED OPTICAL FIBER WITH ARBITRARY CORE SIZE 未知

    公开(公告)号：AU2003285026A1

    公开(公告)日：2004-06-15

    申请号：AU2003285026

    申请日：2003-10-27

    Applicant: CORNING INC

    Inventor： FEKETY CURTIS R ,  GALLAGHER MICHAEL T ,  HAWTOF DANIEL W ,  KOCH III KARL W ,  VENKATARAMAN NATESAN

    IPC: C03B37/012 ,  G02B6/02 ,  G02B6/20 ,  C03B37/025 ,  G02B6/12

    Abstract: The present invention provides methods for manufacturing microstructured optical fibers having an arbitrary core size and shape. According to one embodiment of the invention, a method of fabricating a photonic band gap fiber includes the steps of forming an assembly of stacked elongate elements, the assembly including a first set of elongate elements, the first set of elongate elements defining and surrounding a core volume, and a second set of elongate elements surrounding the first set of elongate elements, wherein the core volume defined by the first set of elongate elements has a shape that is not essentially an integer multiple of the external shape of the elongate elements of the second set of elongate elements; including the assembly in a photonic band gap fiber preform; and drawing the photonic band gap fiber preform into the photonic band gap fiber.

    Method and apparatus for forming silica by combustion of liquidreactants using a heater
    8.
    发明专利
    Method and apparatus for forming silica by combustion of liquidreactants using a heater 未知

    公开(公告)号：AU741475B2

    公开(公告)日：2001-11-29

    申请号：AU7963298

    申请日：1998-06-11

    Applicant: CORNING INC

    Inventor： BLACKWELL JEFFERY L ,  XIAODONG FU ,  HAWTOF DANIEL W ,  HENDERSON DANNY L

    IPC: C03B20/00 ,  C01B33/18 ,  C03B8/02 ,  C03B19/14 ,  C03B37/014

    Abstract: The present invention is directed to a method for making silica glass and silica glass preforms. A liquid, preferably halide-free, silicon-containing compound capable of being converted by thermal oxidative decomposition to SiO2 is provided and introduced directly into the flame of a combustion burner, which converts the compound to silica, thereby forming finely divided amorphous soot. The soot is vaporized proximate the site where the liquid is converted into silica glass by atomizing the liquid, preferably with a stream of atomizing gas. A heater proximate the burner face and around the burner flame increases soot capture rate and allows for a reduction of the velocity of the atomizing gas. The amorphous soot is deposited on a receptor surface where, either substantially simultaneously with or subsequently to its deposition, the soot is consolidated into a body of fused silica glass.

    Method and apparatus for making multi-component glass soot
    9.
    发明专利
    Method and apparatus for making multi-component glass soot 未知

    公开(公告)号：AU4536201A

    公开(公告)日：2001-09-24

    申请号：AU4536201

    申请日：2001-02-27

    Applicant: CORNING INC

    Inventor： BLACKWELL JEFFREY L ,  MOORE LISA A ,  WEI HIAILIANG ,  HAWTOF DANIEL W

    IPC: C03B8/04 ,  C03B37/014 ,  C03B37/018 ,  B05B7/06

    Abstract: An apparatus for producing the glass soot used in the formation of optical fiber includes a burner with an internal atomizer. The atomizer includes an outer tube having a nozzle at an end thereof, and an inner tube located within the outer tube and having a closed end restricting fluid flow therethrough and defining a cylindrical sidewall having radially extending apertures spaced there along. The outer tube receives the glass-forming mixture in liquid form and the inner tube receives an atomizing gas which flows through the apertures in the sidewall of the inner tube and atomizes the glass-forming mixture as the glass-forming mixture travels through the outer tube.

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