公开(公告)号：JPH08320419A

公开(公告)日：1996-12-03

申请号：JP11433296

申请日：1996-04-12

Applicant: CORNING INC

Inventor： BERKEY GEORGE E ,  BHAGAVATULA VENKATA A ,  JONES PETER C ,  KECK DONALD B ,  LIU YANMING ,  MODAVIS ROBERT A ,  MORROW ALAN J ,  NEWHOUSE MARK A ,  NOLAN DANIEL A

IPC: G02B6/00 ,  C03B37/012 ,  C03B37/014 ,  C03B37/018 ,  C03B37/02 ,  C03B37/027 ,  G02B6/02 ,  G02B6/028 ,  G02B6/036 ,  G02B6/10 ,  G02B6/18 ,  G02B6/22

Abstract: PROBLEM TO BE SOLVED: To provide a single mode light waveguide fiber designed to restrict a power penalty due to four optics mixtures and a manufacturing method of that waveguide. SOLUTION: A characteristic change such as radius (diameter 83, 84) or refractive index, for example, of a waveguide fiber core gives all divergence along the length of a waveguide. An algebraic summation of multiples of the length and all divergence is controlled to a pre-selected value toward each waveguide constituting a system link. When the size and the small length part of the change of all divergence is properly selected, a system link with which a signal advances by a short distance in a waveguide part having all divergence close to zero is obtained. However, the change of all divergence gives the system link generating a distributed effect pre-selected for the signals in the wavelength range pre-selected. The distributed effect against the signals can be selected to be substantially zero. A veriety of techniques for manufacture of DM fibers is disclosed.

公开(公告)号：DE69621974T2

公开(公告)日：2003-01-16

申请号：DE69621974

申请日：1996-04-09

Applicant: CORNING INC

Inventor： BERKEY GEORGE E ,  BHAGAVATULA VENKATA A ,  JONES PETER C ,  KECK DONALD B ,  LIU YANMING ,  MODAVIS ROBERT A ,  MORROW ALAN J ,  NEWHOUSE MARK A ,  NOLAN DANIEL A

IPC: C03B37/012 ,  G02B6/00 ,  C03B37/014 ,  C03B37/018 ,  C03B37/02 ,  C03B37/027 ,  G02B6/02 ,  G02B6/028 ,  G02B6/036 ,  G02B6/16

Abstract: A single-mode optical waveguide fiber designed to limit power penalty due to four wave mixing and a method of making the waveguide is disclosed. Variations in properties, e.g., radius or refractive index, of the waveguide fiber core provide a total dispersion which varies along the length of the waveguide. The algebraic sum of products of length times total dispersion is controlled to a pre-selected value for each waveguide fiber which makes up a system link. Proper choice of total dispersion variation magnitude and sub-length results in a system link wherein a signal travels only short distances in waveguide portions having total dispersion near zero. However, the variation of the total dispersion provides a system link which has a pre-selected dispersive effect on the signal over a selected wavelength range. The dispersive effect on the signal can be chosen to be essentially zero. A number of techniques for fabricating DM fiber are also disclosed.

公开(公告)号：RU2178901C2

公开(公告)日：2002-01-27

申请号：RU96107903

申请日：1996-04-10

Applicant: CORNING INC

Inventor： BERKEY GEORGE E ,  BHAGAVATULA VENKATA A ,  JONES PETER C ,  KECK DONALD B ,  LIU YANMING ,  MODAVIS ROBERT A ,  MORROW ALAN J ,  NEWHOUSE MARK A ,  NOLAN DANIEL A

IPC: C03B37/012 ,  C03B37/014 ,  G02B6/00 ,  C03B37/018 ,  C03B37/02 ,  C03B37/027 ,  G02B6/02 ,  G02B6/028 ,  G02B6/036 ,  G02B6/16

Abstract: electronics, optics. SUBSTANCE: single-mode fiber-optical waveguide is designed to diminish energy loss caused by four- wave shift. Waveguide includes region of glass core having profile of distribution of refractive index and surrounded by layer of glass jacket with refractive index nc less than at least part of profile of refractive index of specified region of glass core. Waveguide includes collection of sections along its length and has variable total dispersion which changes its sign from positive to negative and from negative to positive from one section to another section along length of waveguide. Variable total dispersion includes at least first total dispersion Di of one sign over some sections and second total dispersion Dj of opposite sign over other sections. Each section comprises segments ( (dli,dlj) ). Each segment has corresponding constant total dispersion ( (Di,Dj) ) and length of wave of zero dispersion lambda0 varies along length of waveguide between first range including wave lengths from 1480 to 1535 nm with total dispersion equal to Di and second range including wave lengths from 1565 to 1680 nm with total dispersion equal to Dj. Communication line in which sections of signal transmission having zero dispersion have small length is formed by proper selection of changes of values of total dispersion and lengths of sections. Change of total dispersion leads to fact that communication line exerts dispersion effect specified in advance on passing signal in specified range of lengths of waves. In agreement with invention properties of waveguide selected from group including geometry of waveguide, refractive index of waveguide, profile of distribution of waveguide and composition of waveguide are altered to change dispersion along length of waveguide. EFFECT: invention provides for reduction of optical losses and dispersion to specified value. 14 cl, 38 dwg _

公开(公告)号：BR9601344A

公开(公告)日：1998-01-13

申请号：BR9601344

申请日：1996-04-12

Applicant: CORNING INC

Inventor： BERKEY GEORGE E ,  BHAGAVATULA VENKATA A ,  JONES PETER C ,  KECK DONALD B ,  LIU YANMING ,  MODAVIS ROBERT A ,  MORROW ALAN J ,  NEWHOUSE MARK A ,  NOLAN DANIEL A

IPC: G02B6/00 ,  C03B37/012 ,  C03B37/014 ,  C03B37/018 ,  C03B37/02 ,  C03B37/027 ,  G02B6/02 ,  G02B6/028 ,  G02B6/036 ,  G02B6/18

Abstract: A single-mode optical waveguide fiber designed to limit power penalty due to four wave mixing and a method of making the waveguide is disclosed. Variations in properties, e.g., radius or refractive index, of the waveguide fiber core provide a total dispersion which varies along the length of the waveguide. The algebraic sum of products of length times total dispersion is controlled to a pre-selected value for each waveguide fiber which makes up a system link. Proper choice of total dispersion variation magnitude and sub-length results in a system link wherein a signal travels only short distances in waveguide portions having total dispersion near zero. However, the variation of the total dispersion provides a system link which has a pre-selected dispersive effect on the signal over a selected wavelength range. The dispersive effect on the signal can be chosen to be essentially zero. A number of techniques for fabricating DM fiber are also disclosed.

公开(公告)号：AU5046196A

公开(公告)日：1996-10-24

申请号：AU5046196

申请日：1996-04-03

Applicant: CORNING INC

Inventor： BERKEY GEORGE E ,  BHAGAVATULA VENKATA A ,  JONES PETER C ,  KECK DONALD B ,  LIU YANMING ,  MODAVIS ROBERT A ,  MORROW ALAN J ,  NEWHOUSE MARK A ,  NOLAN DANIEL A

IPC: G02B6/00 ,  C03B37/012 ,  C03B37/014 ,  C03B37/018 ,  C03B37/02 ,  C03B37/027 ,  G02B6/02 ,  G02B6/028 ,  G02B6/036 ,  G02B6/18

Abstract: A single-mode optical waveguide fiber designed to limit power penalty due to four wave mixing and a method of making the waveguide is disclosed. Variations in properties, e.g., radius or refractive index, of the waveguide fiber core provide a total dispersion which varies along the length of the waveguide. The algebraic sum of products of length times total dispersion is controlled to a pre-selected value for each waveguide fiber which makes up a system link. Proper choice of total dispersion variation magnitude and sub-length results in a system link wherein a signal travels only short distances in waveguide portions having total dispersion near zero. However, the variation of the total dispersion provides a system link which has a pre-selected dispersive effect on the signal over a selected wavelength range. The dispersive effect on the signal can be chosen to be essentially zero. A number of techniques for fabricating DM fiber are also disclosed.

公开(公告)号：CA2097873A1

公开(公告)日：1993-12-19

申请号：CA2097873

申请日：1993-06-07

Applicant: CORNING INC

Inventor： AMOS LYNN G ,  JONES PETER C

IPC: C03B37/018 ,  C03B37/014 ,  G02B6/00 ,  G02B6/036 ,  G02B6/16

Abstract: of the Invention An optical waveguide fiber with a core region 1 and a cladding region 2, wherein said cladding region 2 includes an outer cladding region 3 is disclosed wherein said outer cladding region 3 is a very thin (less than 1 .mu.m in thickness) layer of TiO2-SiO2 glass which results in a substantial reduction in the number of fiber breaks resulting from the fiber drawing process and having a predetermined TiO2 concentration less than or equal to about 10 wt. %. A method for making said fiber is also discussed.

公开(公告)号：DK0737873T3

公开(公告)日：2002-10-21

申请号：DK96105573

申请日：1996-04-09

Applicant: CORNING INC

Inventor： BERKEY GEORGE E ,  JONES PETER C ,  LIU YANMING ,  MODAVIS ROBERT A ,  NEWHOUSE MARK A ,  BHAGAVATULA VENKATA A ,  KECK DONALD B ,  MORROW ALAN J ,  NOLAN DANIEL A

IPC: C03B37/012 ,  G02B6/00 ,  C03B37/014 ,  C03B37/018 ,  C03B37/02 ,  C03B37/027 ,  G02B6/02 ,  G02B6/028 ,  G02B6/036 ,  G02B6/16

Abstract: A single-mode optical waveguide fiber designed to limit power penalty due to four wave mixing and a method of making the waveguide is disclosed. Variations in properties, e.g., radius or refractive index, of the waveguide fiber core provide a total dispersion which varies along the length of the waveguide. The algebraic sum of products of length times total dispersion is controlled to a pre-selected value for each waveguide fiber which makes up a system link. Proper choice of total dispersion variation magnitude and sub-length results in a system link wherein a signal travels only short distances in waveguide portions having total dispersion near zero. However, the variation of the total dispersion provides a system link which has a pre-selected dispersive effect on the signal over a selected wavelength range. The dispersive effect on the signal can be chosen to be essentially zero. A number of techniques for fabricating DM fiber are also disclosed.

公开(公告)号：DE69621974D1

公开(公告)日：2002-08-01

申请号：DE69621974

申请日：1996-04-09

Applicant: CORNING INC

Inventor： BERKEY GEORGE E ,  BHAGAVATULA VENKATA A ,  JONES PETER C ,  KECK DONALD B ,  LIU YANMING ,  MODAVIS ROBERT A ,  MORROW ALAN J ,  NEWHOUSE MARK A ,  NOLAN DANIEL A

IPC: C03B37/012 ,  G02B6/00 ,  C03B37/014 ,  C03B37/018 ,  C03B37/02 ,  C03B37/027 ,  G02B6/02 ,  G02B6/028 ,  G02B6/036 ,  G02B6/16

Abstract: A single-mode optical waveguide fiber designed to limit power penalty due to four wave mixing and a method of making the waveguide is disclosed. Variations in properties, e.g., radius or refractive index, of the waveguide fiber core provide a total dispersion which varies along the length of the waveguide. The algebraic sum of products of length times total dispersion is controlled to a pre-selected value for each waveguide fiber which makes up a system link. Proper choice of total dispersion variation magnitude and sub-length results in a system link wherein a signal travels only short distances in waveguide portions having total dispersion near zero. However, the variation of the total dispersion provides a system link which has a pre-selected dispersive effect on the signal over a selected wavelength range. The dispersive effect on the signal can be chosen to be essentially zero. A number of techniques for fabricating DM fiber are also disclosed.

公开(公告)号：CA2174055A1

公开(公告)日：1996-10-14

申请号：CA2174055

申请日：1996-04-12

Applicant: CORNING INC

Inventor： BERKEY GEORGE E ,  BHAGAVATULA VENKATA A ,  JONES PETER C ,  KECK DONALD B ,  LIU YANMING ,  MODAVIS ROBERT A ,  MORROW ALAN J ,  NEWHOUSE MARK A ,  NOLAN DANIEL A

IPC: G02B6/00 ,  C03B37/012 ,  C03B37/014 ,  C03B37/018 ,  C03B37/02 ,  C03B37/027 ,  G02B6/02 ,  G02B6/028 ,  G02B6/036 ,  G02B6/18

Abstract: A single-mode optical waveguide fiber designed to limit power penalty due to four wave mixing and a method of making the waveguide is disclosed. Variations in properties, e.g., radius or refractive index, of the waveguide fiber core provide a total dispersion which varies along the length of the waveguide. The algebraic sum of products of length times total dispersion is controlled to a pre-selected value for each waveguide fiber which makes up a system link. Proper choice of total dispersion variation magnitude and sub-length results in a system link wherein a signal travels only short distances in waveguide portions having total dispersion near zero. However, the variation of the total dispersion provides a system link which has a pre-selected dispersive effect on the signal over a selected wavelength range. The dispersive effect on the signal can be chosen to be essentially zero. A number of techniques for fabricating DM fiber are also disclosed.

公开(公告)号：CA2030748A1

公开(公告)日：1991-06-23

申请号：CA2030748

申请日：1990-11-23

Applicant: CORNING INC

Inventor： BACKER MARCELLA R ,  BLANKENSHIP MICHAEL G ,  CAVENDER RALSTON ,  DE JONG BERNARD J ,  ELDER MELANIE L ,  GLAESEMANN GREGORY S ,  JONES PETER C ,  MURPHY JAMES A

IPC: C03B37/018 ,  C03B37/014 ,  C03C13/04 ,  G02B6/00 ,  G02B6/036 ,  C03B37/027 ,  C03B20/00 ,  G02B6/22

Abstract: An optical waveguide fiber with a fatigue resistant TiO2-SiO2 outer cladding including a cylindrical outermost layer with TiO2 concentration greater than 10.5 wt.% and thickness less than 3 mu m. The fiber may include a two layer outer cladding with higher TiO2 concentration in the outer layer. The outer cladding may ionclude a plurality of inhomogeneities dispersed in a TiO2-SiO2 matrix. A method of making an optical waveguide fiber with a fatigue resistant TiO2-SiO2 outer cladding, and a substantially glass blank for drawing into such fiber, wherein a glass soot TiO2-SiO2 outermost layer, with an initial TiO2 concentration greater than 10.5 wt.%, is deposited on a preform, and the preform is exposed to an atmosphere of chlorine at a high temperature, and the resulting TiO2 concentration in the outermost layer of the TiO2-SiO2 outer cladding of the substantially glass blank is less than the initial TiO2 concentration. In the glass blank form, the outermost layer includes a substantial volume percentage of crystalline phases and in the fiber form, the outermost layer includes inhomogeneities.