公开(公告)号：WO03014810A9

公开(公告)日：2003-04-10

申请号：PCT/US0223280

申请日：2002-07-22

Applicant: CORNING INC

Inventor： SRIKANT V ,  WILLIAMS MARTIN R

IPC: H01S3/067 ,  H01S3/10 ,  H01S3/30 ,  G02F

CPC classification number: H01S3/302 ,  H01S3/06758 ,  H01S3/10015 ,  H01S2301/02

Abstract: An optical amplifier site comprising: (i) a distributed Raman amplifier providing a first signal gain level; (ii) an optical amplifier located downstream from the distributed Raman amplifier, the optical amplifier being indirectly coupled to the distributed Raman amplifier, the optical amplifier including a first amplification medium, providing a second signal gain level; (iii) at least one optical signal loss element located between the distributed Raman amplifier and the optical amplifier and, contributing at least 0.5dB optical loss to the amplifier site; (iv) a second amplification medium located down-stream from the first amplification medium; and (v) at least another one optical signal loss element, this at least another one optical signal loss element being located between said first amplification medium and said second amplification medium.

Abstract translation: 一种光放大器位置，包括：（i）提供第一信号增益电平的分布式拉曼放大器; （ii）位于所述分布式拉曼放大器下游的光放大器，所述光放大器间接耦合到所述分布式拉曼放大器，所述光放大器包括提供第二信号增益电平的第一放大介质; （iii）位于分布式拉曼放大器和光放大器之间的至少一个光信号损耗元件，并且对放大器位置贡献至少0.5dB的光损耗; （iv）位于第一扩增介质下游的第二扩增介质; 和（v）至少另一个光信号损失元件，该至少另一个光信号损耗元件位于所述第一放大介质和所述第二放大介质之间。

公开(公告)号：WO0192931A2

公开(公告)日：2001-12-06

申请号：PCT/US0117392

申请日：2001-05-30

Applicant: CORNING INC

Inventor： BICKHAM SCOTT R ,  CAIN MICHAEL B ,  KUMAR SHIVA ,  MISHRA SNIGDHARAJ K ,  SRIKANT V ,  STONE JEFFERY S

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

CPC classification number: G02B6/03677 ,  G02B6/02009 ,  G02B6/02019 ,  G02B6/02242 ,  G02B6/02261 ,  G02B6/02285 ,  G02B6/0281 ,  G02B6/0286

Abstract: Disclosed are refractive index profiles for total dispersion compensating optical waveguide fibers for use in high data rate, long length telecommunications systems. The optical waveguide fibers in accord with the invention provide substantially equal compensation of total dispersion over a range of wavelengths, thus facilitating wavelength division multiplexed systems. Also disclosed are spans of optical waveguide fiber that include a length of transmission fiber together with a length of the compensating fiber. The spans are joined end to end in series arrangement to form the optical waveguide fiber part of a telecommunication system.

Abstract translation: 公开了用于高数据速率，长长度电信系统的总色散补偿光波导光纤的折射率分布。 根据本发明的光波导纤维提供在波长范围上的总色散的基本相等的补偿，从而便于波分复用系统。 还公开了包括传输光纤的长度与补偿光纤的长度的光波导光纤的跨度。 跨距串联连接成端部以形成电信系统的光波导纤维部分。

公开(公告)号：WO0125828A3

公开(公告)日：2001-12-06

申请号：PCT/US0023605

申请日：2000-08-25

Applicant: CORNING INC

Inventor： CAIN MICHAEL B ,  SRIKANT V

IPC: G02B6/02 ,  G02B6/036 ,  H04B10/18 ,  G02B6/16 ,  G02B6/34

CPC classification number: G02B6/03688 ,  G02B6/02261 ,  G02B6/0286 ,  G02B6/03611 ,  G02B6/03644 ,  G02B6/03666 ,  G02B6/29377 ,  H04B10/25253

Abstract: Disclosed is a dispersion compensating waveguide fiber suitable for use in high data rate, high light power telecommunications systems of intermediate length. The refractive index profile of the compensation fiber is segmented. The core region includes three, four, or five, a central segment (28), a first annular segment (30), a second annular segment (32), a third annular segment (34), and a fourth annular segment (36) having different relative refractive indexes. The segment relative refractive indexes and radii are chosen to provide negative total dispersion and negative total dispersion slope over an extended wavelength range. The index profile design is flexible enough to provide compensated links having total dispersion that is positive, negative, or zero, while maintaining appropriate total dispersion slope compensation. In addition, the waveguide fiber of the invention may be cabled or otherwise buffered prior to its use in a communications system.

Abstract translation: 公开了一种适用于中等长度的高数据速率，高光功率电信系统的色散补偿波导光纤。 补偿光纤的折射率分布被分段。 芯部区域包括三个，四个或五个中心部分（28），第一环形部分（30），第二环形部分（32），第三环形部分（34）和第四环形部分（36） 具有不同的相对折射率。 选择片段相对折射率和半径以在扩展的波长范围内提供负的总色散和负的总色散斜率。 折射率分布设计足够灵活，以提供具有正，负或零的总色散的补偿链路，同时保持适当的总色散斜率补偿。 此外，本发明的波导光纤可以在其在通信系统中使用之前被连接或者被缓冲。

公开(公告)号：WO0171391A2

公开(公告)日：2001-09-27

申请号：PCT/US0108190

申请日：2001-03-14

Applicant: CORNING INC

Inventor： LEI JIANG ,  QI GANG ,  SRIKANT V ,  STONE JEFFERY S ,  TEN SERGEY Y

IPC: G02B6/036 ,  G02B

CPC classification number: G02B6/03677 ,  G02B6/02261 ,  G02B6/0228 ,  G02B6/0286 ,  G02B6/03611 ,  G02B6/03644

Abstract: Disclosed is a dispersion compensating optical fiber that includes a core surrounded by a cladding layer of refractive index DELTA c. The core includes at least three radially adjacent regions, a central core region having DELTA 1, a moat region having a refractive index DELTA 2 and an annular ring region having a refractive index DELTA 3, such that DELTA 1 > DELTA 3 > DELTA c > DELTA 2. The fiber exhibits a dispersion slope which is less than -1.0 ps/nm /km over the wavelength range 1525 to 1565, a dispersion at 1550 which is less than -30 ps/nm/km, and a kappa value obtained by dividing the dispersion value by the dispersion slope which is greater than 35 and preferably between 40 and 100.

Abstract translation: 公开了一种色散补偿光纤，其包括由折射率DELTA c的包覆层包围的芯。 芯包括至少三个径向相邻的区域，具有DELTA 1的中心芯区域，具有折射率DELTA 2的护环区域和具有折射率DELTA 3的环形环区域，使得DELTA 1> DELTA 3> DELTA 2.纤维在1525至1565的波长范围内表现出小于-1.0ps / nm 2 / km的色散斜率，1550的色散小于-30ps / nm / km，kappa 通过将色散值除以大于35，优选在40和100之间的色散斜率获得的值。

公开(公告)号：DE60219147D1

公开(公告)日：2007-05-10

申请号：DE60219147

申请日：2002-01-31

Applicant: CORNING INC

Inventor： CONRADI JAN ,  SRIKANT V ,  TEN SERGEY Y

IPC: G02B6/02 ,  H04B10/18 ,  H04B10/02 ,  H04B10/12 ,  H04B10/135 ,  H04B10/14 ,  H04B10/2581

公开(公告)号：ZA200201263B

公开(公告)日：2002-12-24

申请号：ZA200201263

申请日：2002-02-14

Applicant: CORNING INC

Inventor： CAIN MICHAEL B ,  SRIKANT V

IPC: G02B6/02 ,  G02B6/036 ,  H04B10/18 ,  G02B

Abstract: Disclosed is a dispersion compensating waveguide fiber suitable for use in high data rate, high light power telecommunications systems of intermediate length. The refractive index profile of the compensation fiber is segmented. The segment relative refractive indexes and radii are chosen to provide negative total dispersion and negative total dispersion slope over an extended wavelength range. The index profile design is flexible enough to provide compensated links having total dispersion that is positive, negative, or zero, while maintaining appropriate total dispersion slope compensation. In addition, the waveguide fiber of the invention may be cabled or otherwise buffered prior to its use in a communications system.

公开(公告)号：ZA200107898B

公开(公告)日：2002-09-25

申请号：ZA200107898

申请日：2001-09-26

Applicant: CORNING INC

Inventor： BERKEY GEORGE E ,  JIANG LEI ,  POWERS DALE R ,  SRIKANT V

IPC: C03B37/014 ,  C03B37/018 ,  G02B6/00 ,  G02B6/036 ,  G02B

Abstract: Disclosed is a dispersion compensating optical fiber that includes a core surrounded by a cladding layer of refractive index nCL. The core includes at least three radially adjacent regions, a central core region, a moat region having a refractive index nM that is sufficiently lower than nCL such that DELTAM

公开(公告)号：BR0009970A

公开(公告)日：2002-01-08

申请号：BR0009970

申请日：2000-04-07

Applicant: CORNING INC

Inventor： BERKEY GEORGE EDWARD ,  HAWTOF DANIEL WARREN ,  POWERS DALE ROBERT ,  GIROUX CYNTHIA B ,  SRIKANT V ,  BOOKBINDER DANA C ,  FIACCO RICHARD M

IPC: G02B6/00 ,  C03B37/012 ,  C03B37/014 ,  C03C13/04 ,  G02B6/02 ,  C03B37/018 ,  G02B6/16

Abstract: A cylindrical glass body having a low water content centerline region and method of manufacturing such a cylindrical glass body for use in the manufacture of optical waveguide fiber is disclosed. The centerline region of the cylindrical glass body has a water content sufficiently low such that an optical waveguide fiber made from the cylindrical glass body of the present invention exhibits an optical attenuation of less than about 0.35 dB/km, and preferably less than about 0.31 dB/km at a measured wavelength of 1380 nm. A low water content plug used in the manufacture of such a cylindrical glass body, an optical waveguide fiber having a low water peak, and an optical fiber communication system incorporating such an optical waveguide fiber is also disclosed.

公开(公告)号：BR0009817A

公开(公告)日：2002-01-08

申请号：BR0009817

申请日：2000-03-23

Applicant: CORNING INC

Inventor： BERKEY GEORGE EDWARD ,  SRIKANT V

IPC: C03B37/025 ,  C03B37/027 ,  G02B6/036 ,  G02B6/18

Abstract: An optical fiber and method of making, wherein the optical fiber alternates between regions having different diameters along its length, wherein the refractive index of said blank and the diameters of said fiber are chosen to result in a fiber having alternating regions of positive and negative dispersion at a wavelength which is greater than 1480 nm, yet preferably has a low net dispersion and dispersion slope. A preferred such profile consists of a core region surrounded by a cladding region, said core region comprised of an central core region which is updoped with respect to said cladding region, said central core region surrounded by a moat region which is downdoped with respect to said cladding region, and said moat region is surrounded by an annular ring region which is updoped with respect to said cladding region. In addition, a family of profiles is presented which may be used to produce very low dispersion slope fibers. When used in conjunction with alternating positive and negative dispersion regions, lower net dispersion slope can be achieved. Alternatively, the family of profiles is useful in conventional WDM applications.

公开(公告)号：AU6804501A

公开(公告)日：2002-01-02

申请号：AU6804501

申请日：2001-05-03

Applicant: CORNING INC

Inventor： FAJARDO JAMES C ,  SRIKANT V ,  WEST JAMES A

IPC: G02B6/00 ,  G02B6/02 ,  G02B6/032

Abstract: A fiber optic waveguide is disclosed. The fiber optic waveguide includes a core region, and a moat region surrounding the core region. A cladding region surrounds the moat region and the core region. The cladding region includes a lattice of column structures disposed within a solid background matrix. A diameter of the core region is sized for making contact with the moat region for creating an extended core region at longer wavelengths. The core region, the moat region, and the cladding region function to produce unique dispersion compensating properties, which include negative dispersion and positive dispersion. The core region may be formed from a high index material and the moat region may be formed from a material having a refractive index lower than the refractive index of the core region. The cladding region is formed from a material having a refractive index which is higher than the index of the moat region and lower than the refractive index of core region.