公开(公告)号：AU4156802A

公开(公告)日：2002-06-24

申请号：AU4156802

申请日：2001-10-31

Applicant: CORNING INC

Inventor： SRIKANT V

IPC: G02B6/028 ,  H04B10/18 ,  G02B6/16

公开(公告)号：AU3947102A

公开(公告)日：2002-06-24

申请号：AU3947102

申请日：2001-10-31

Applicant: CORNING INC

Inventor： LEHMAN MICHAEL J ,  SRIKANT V ,  STONE JEFFERY S

IPC: C03B37/014 ,  C03B37/018

Abstract: A method for doping silica soot with fluorine during laydown, including providing a bait rod, and providing a burner, wherein the burner emits a reactant flame. The method also including providing at least one first gas-feed separate from the burner, wherein the gas-feed supplies a first jet of fluorine-based gases, and depositing a layer of silica soot on the bait rod by vaporizing a silica producing gas within the reactant flame of the burner. The method further including supplying the first jet of fluorine-based gases to the silica soot deposited on to the bait rod via the first gas-feed subsequent to vaporizing at least a portion of the silica producing gas within the reactant flame of the burner.

公开(公告)号：AU7480301A

公开(公告)日：2001-10-08

申请号：AU7480301

申请日：2001-02-21

Applicant: CORNING INC

Inventor： BERKEY GEORGE E ,  BICKHAM SCOTT R ,  CAIN MICHAEL B ,  HAJCAK PAMELA A ,  MANYAM UPENDRA H ,  MISHRA SNIGDHARAJ K ,  SRIKANT V

IPC: G02B6/036 ,  H04B10/02 ,  H04B10/43 ,  G02B6/00

Abstract: Disclosed is a dispersion compensating and dispersion slope compensating single mode optical waveguide fiber. The refractive index profiles of waveguide fibers in accord with the invention are disclosed and described. These index profiles provide a waveguide fiber having negative total dispersion and negative total dispersion slope so that a standard waveguide fiber is compensated over an extended wavelength range. A telecommunications link using the fiber in accord with the invention is also disclosed and described. A standard fiber to compensating fiber length ratio in the range of 1:1 to 3:1 is shown to give optimum link performance with respect to limiting non-linear dispersion effects.

公开(公告)号：AU7826400A

公开(公告)日：2001-05-10

申请号：AU7826400

申请日：2000-08-25

Applicant: CORNING INC

Inventor： CAIN MICHAEL B ,  SRIKANT V

IPC: G02B6/02 ,  G02B6/036 ,  H04B10/18 ,  G02B6/00

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：AU4486600A

公开(公告)日：2000-11-17

申请号：AU4486600

申请日：2000-04-24

Applicant: CORNING INC

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

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

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：CA2370676A1

公开(公告)日：2000-10-26

申请号：CA2370676

申请日：2000-03-23

Applicant: CORNING INC

Inventor： BERKEY GEORGE E ,  SRIKANT V

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

Abstract: The optical fiber alternates between regions having different dia meters alo ng its length, wherein the refractive index and the diameters of said fiber result in alternating regions of positive and negative dispersion at a wavelength greater than 1480 nm, yet preferably has a low net dispersion and dispersion slope. A preferred profile consists of a core region surrounded b y a cladding region, said core region comprising a central core region updoped with respect to said cladding region, said central core region surrounded by a moat region downdoped with respect to said cladding region, said moat region surrounded by an annular region updoped with respect to said cladding region . The family of profiles presented when used in conjunction with alternating positive and negative dispersion regions produce low dispersion slope fibers . The family of profiles is useful in conventional WDM applications.

公开(公告)号：WO02080410A3

公开(公告)日：2003-05-01

申请号：PCT/US0202880

申请日：2002-01-31

Applicant: CORNING INC

Inventor： CONRADI JAN ,  SRIKANT V ,  TEN SERGEY Y

IPC: G02B6/02 ,  H04B10/02 ,  H04B10/12 ,  H04B10/13 ,  H04B10/135 ,  H04B10/14 ,  H04B10/18

CPC classification number: H04B10/25253

Abstract: An optical signal transmission line includes a first fiber adapted to guide an optical signal therethrough and having a first kappa , a second fiber adapted to guide the optical signal therethrough and having a second kappa of less than or equal to about 100 nm at a wavelength of 1550 nm, and a kappa compensating fiber adapted to guide the optical signal therethrough and having a third kappa of greater than or equal to about 60 nm at a wavelength of 1550 nm. The first fiber, the second fiber and the kappa compensating fiber are in optical communication, thereby defining an optical transmission line having a total dispersion and a total dispersion slope. The first kappa , the second kappa and the third kappa cooperate such that the total dispersion is within the range of about 1.0 ps/nm-km >/= total dispersion >/= about -1.0 ps/nm-km at a wavelength of 1550 nm, and the total dispersion slope is within the range of about 0.02 ps/nm -km >/= total dispersion slope >/= about -0.02 ps/nm -km at a wavelength of 1550 nm.

Abstract translation: 光信号传输线包括第一光纤，其适于引导光信号通过其中并具有第一卡尔，第二光纤适于通过其引导光信号，并具有小于或等于约100nm的第二卡波长 1550nm，以及适于引导光信号通过其中并具有大于或等于约60nm的第三κ波长的kappa补偿光纤，波长为1550nm。 第一光纤，第二光纤和κ补偿光纤是光通信的，由此限定具有总色散和总色散斜率的光传输线。 第一个kappa，第二个kappa和第三个kappa协调使总色散在波长1550的约1.0 ps / nm-km> / =总色散> / =约-1.0 ps / nm-km的范围内 nm，并且总色散斜率在1550nm的波长处于约0.02ps / nm 2 -km> / =总色散斜率> / =约-0.02ps / nm 2 -km的范围内。

公开(公告)号：WO0249977A9

公开(公告)日：2003-04-17

申请号：PCT/US0146274

申请日：2001-10-31

Applicant: CORNING INC

Inventor： DAWES STEVEN B ,  SCHERMERHORN ANDREW P ,  SRIKANT V ,  TANDON PUSHKAR

IPC: C03B37/014 ,  C03B37/018

CPC classification number: C03B37/01853 ,  C03B37/01413 ,  C03B37/01446 ,  C03B37/01807 ,  C03B2201/12 ,  C03B2207/30

Abstract: The invention relates to the manufacturing of a preform having at least one fluorine doped region. One method of the invention for producing the fluorinated preform includes heat treating a porous soot preform, the preform substantially devoid of any sintered glass layer, to a temperature of greater than about 1200 DEG C. The method further includes exposing the preform to an atmosphere comprising a fluorine containing compound, wherein the time and the temperature of said exposing step is controlled so that F comprises > about 1 wherein F is defined as Rmax/(D/k)1/2, wherein Rmax is the outer radius of the preform, D is the diffusion coefficient of the fluorine containing compound into the preform, and k is the reaction rate constant of the reaction between the fluorine and the soot, thereby controlling the radial penetration of fluorine into the preform. A second method includes depositing fluorine doped silica soot on a starting member to form a soot preform having at least one fluorine doped soot region and heating the soot preform at a rate of more than about 10 DEG C/min to a temperature of more than about 1300 DEG C. A third method includes heating a preform having at least one region of fluorine doped soot at a rate of more than about 10 DEG C/min to a temperature of more than about 1400 DEG C.

Abstract translation: 本发明涉及具有至少一个氟掺杂区域的预制件的制造。 用于生产氟化预成型件的本发明的一种方法包括将多孔烟炱预制件（基本上没有任何烧结玻璃层的预制件）热处理至大于约1200℃的温度。该方法还包括将预成型坯暴露于包括 含氟化合物，其中控制所述曝光步骤的时间和温度使得F包含>约1，其中F定义为Rmax /（D / k）1/2，其中Rmax是预成型件的外半径， D是含氟化合物进入预成型体的扩散系数，k是氟和烟灰之间的反应的反应速率常数，从而控制氟进入预成型体的径向渗透。 第二种方法包括在起始构件上沉积氟掺杂的二氧化硅烟炱以形成具有至少一个氟掺杂烟灰区域的烟炱预制件，并以大于约10℃/分钟的速率将烟炱预制件加热到大于约 1300℃。第三种方法包括将具有氟掺杂烟灰的至少一个区域的预成型体以大于约10℃/分钟的速率加热到大于约1400℃的温度。

公开(公告)号：WO03014810A2

公开(公告)日：2003-02-20

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: a distributed Raman amplifier (20) providing a first signal gain level; an optical amplifier (10) 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 (30), providing a second signal gain level; at least one optical signal loss element (60) located between the distributed Raman amplifier and the optical amplifier and, contributing at least 0.5dB optical loss to the amplifier site; a second amplification medium (40) located downstream from the first amplification medium; and at least another one optical signal loss element (50), 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：提供第一信号增益电平的分布式拉曼放大器（20） 位于分布式拉曼放大器下游的光放大器（10），光放大器间接耦合到分布式拉曼放大器，该光放大器包括提供第二信号增益电平的第一放大介质（30） 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（60），并且对放大器位置贡献至少0.5dB的光损耗; 位于所述第一扩增介质下游的第二扩增介质（40）; 和至少另一个光信号损耗元件（50），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：WO0171391A9

公开(公告)日：2003-01-09

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 ,  G02B6/22

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.光纤在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。