FIBRA DE GRAN AREA EFECTIVA QUE TIENE UN BAJO ALCANCE DE DISPERSION TOTAL.

    公开(公告)号:MXPA01010960A

    公开(公告)日:2002-05-06

    申请号:MXPA01010960

    申请日:2000-03-23

    Applicant: CORNING INC

    Inventor: LI MING-JUN

    Abstract: Se describe una fibra de gula de onda optica de un solo modo que tiene un area efectiva relativamente grande y una buena resistencia a la flexion; la fibra de gula de onda se caracteriza por un nucleo segmentado que tiene un segmento central 30 y al menos un segmento anular 32, 34, 36 que rodea al segmento central; al menos un segmento tiene un indice de refraccion relativo negativo en donde el indice de refraccion de referencia se toma como el indice del revestimiento; la dispersion total de la fibra es positiva para longitudes de onda por arriba de alrededor de 1500 nm, el alcance de dispersion es tipicamente menor que alrededor de 0.08 ps/nM2 -km, y la atenuacion inducida bajo el ensayo de inflexion de la disposicion de la aguja tipicamente es menor que 5 dB/km.

    Optical fiber with large effective area, low dispersion and low dispersion slope

    公开(公告)号:AU3142502A

    公开(公告)日:2002-02-25

    申请号:AU3142502

    申请日:2001-07-03

    Applicant: CORNING INC

    Inventor: LI MING-JUN

    Abstract: A single mode optical waveguide fiber having a relatively large effective area and a low dispersion slope has a segmented core having a central segment, a first annular segment, and a second annular segment. Each segment has a relative refractive index percent, and an inner and outer radius. The relative refractive index percent and the radii of each core segment are chosen from the following ranges: the relative index of the central segment within the range of about 0.53% to about 0.9%; the relative index of the first annular segment within the range of about -0.2% to about 0.15%; the relative index of the second annular segment within the range of about 0.1% to about 0.4%; the outer radius of the central segment within the range of about 3.1 mum and about 5.0 mum; and the center radius of the third annular segment within the range of about 6.18 mum and about 7.7 mum.

    Devices and methods for controlling protection switching in an optical channel shared protection ring

    公开(公告)号:AU6803401A

    公开(公告)日:2001-09-17

    申请号:AU6803401

    申请日:2001-03-09

    Applicant: CORNING INC

    Abstract: An optical channel shared protection ring including multiple ring nodes, the nodes including optical switch or crossbar capability for performing ring switching for end-node protection switching for wavelengths that may be dropped and added and a non-intrusive optical channel monitor at least on each working channel both on the add and drop side of the node, such that a monitor is always present at both a head-end location where traffic is introduced to the ring and at a tail end location where traffic leaves the ring, so as to be able to trigger end-node protection switching performed by the head-end and tail-end nodes based on the condition of absence of adequate signal at the tail-end location alone, and not on the condition of absence of adequate signal at both the head-end and the tail-end location, thus avoiding unnecessary protection switching.

    Two-fiber interconnected ring architecture

    公开(公告)号:AU2248101A

    公开(公告)日:2001-07-03

    申请号:AU2248101

    申请日:2000-10-24

    Applicant: CORNING INC

    Abstract: A two-fiber ring architecture capable of carrying multiple wavelength channels and allowing client self-healing of single point failures. The ring architecture includes a two-fiber optical ring carrying at least one wavelength channel, wherein the wavelength channel has working traffic and protection traffic. The optical ring can include a single ring, two interconnected rings, or multiple interconnected rings. Specifically, the ring architecture includes a first client networking element connected to the optical ring by a first pair of 2x2 add drop matrices and a second client networking element connected to the optical ring by a second pair of 2x2 add drop matrices. At least one interconnect node is also provided when more than one ring is used, wherein the interconnect node has a first 2x2 interconnect matrix and a second 2x2 interconnect matrix. The first 2x2 interconnect matrix routes the working traffic from the first client networking element to the second client networking element. Similarly, the second 2x2 interconnect matrix routes the protection traffic from the second client networking element to the first client networking element. The optical ring includes a first access ring, an inter-office (IOF) ring, and a second access ring. Access rings are connected to the IOF ring by the aforementioned interconnect nodes.

    TWO-FIBER INTERCONNECTED RING ARCHITECTURE

    公开(公告)号:CA2395303A1

    公开(公告)日:2001-06-28

    申请号:CA2395303

    申请日:2000-10-24

    Applicant: CORNING INC

    Abstract: A two-fiber ring architecture capable of carrying multiple wavelength channe ls and allowing client self-healing of single point failures. The ring architecture includes a two-fiber optical ring carrying at least one wavelength channel, wherein the wavelength channel has working traffic and protection traffic. The optical ring can include a single ring, two interconnected rings, or multiple interconnected rings. Specifically, the ri ng architecture includes a first client networking element connected to the optical ring by a first pair of 2X2 add drop matrices and a second client networking element connected to the optical ring by a second pair of 2X2 add drop matrices. At least one interconnect node is also provided when more tha n one ring is used, wherein the interconnect node has a first 2X2 interconnect matrix and a second 2X2 interconnect matrix. The first 2X2 interconnect matr ix routes the working traffic from the first client networking element to the second client networking element. Similarly, the second 2X2 interconnect matrix routes the protection traffic from the second client networking eleme nt to the first client networking element. The optical ring includes a first access ring, an inter-office (IOF) ring, and a second access ring. Access rings are connected to the IOF ring bythe aforementioned interconnect nodes.

    47.
    发明专利
    未知

    公开(公告)号:BR9912005A

    公开(公告)日:2001-05-02

    申请号:BR9912005

    申请日:1999-06-21

    Applicant: CORNING INC

    Abstract: A single mode optical waveguide fiber having a refractive index profile comprising not less than four segments (16, 18, 20, 22) provides waveguide properties well suited to undersea or other long haul telecommunications systems. The novel refractive index profile is characterized by a core segment having a negative relative index, in which, the reference index is that of silica. Another feature of the invention is a cladding layer which contains refractive index increasing dopant at least in the cladding portion adjacent the outermost core segment.

    Large effective area waveguide fiber

    公开(公告)号:AU3618700A

    公开(公告)日:2000-10-04

    申请号:AU3618700

    申请日:2000-03-07

    Applicant: CORNING INC

    Inventor: LI MING-JUN

    Abstract: Disclosed is a single mode optical waveguide fiber having a segmented core in which the central segment is a void (16). The shape and radial extent of the core segments are selected to provide a low dispersion slope together with large effective area and good bend resistance. Embodiments of the refractive index profiles in accord with the invention are shown having two or three annular segments (2, 6, 8) surrounding the central void. The presence of the void provides the benefits of a negative relative index located centrally in the core region without the process difficulties associated with the use of dopants that decrease the refractive index of the waveguide fiber.

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