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    Optical communication system using multiple-order raman amplifiers
    11.
    发明公开
    Optical communication system using multiple-order raman amplifiers 有权
    与不同阶的拉曼放大器的光传输系统

    公开(公告)号：EP1022870A3

    公开(公告)日：2003-08-20

    申请号：EP00300212.8

    申请日：2000-01-13

    Applicant: LUCENT TECHNOLOGIES INC.

    Inventor： Stenz, Andrew John ,  Walker, Kenneth Lee

    IPC: H01S3/30 ,  H04B10/17

    CPC classification number: H04B10/2916 ,  H01S3/094073 ,  H01S3/094096 ,  H01S3/302

    Abstract: In accordance with the invention an optical fiber communication system comprising a source of optical signals and an optical fiber transmission line is provided with one or more multiple-order distributed Raman effect amplifiers downstream of the source for amplifying the transmitted signals. As compared with a communication system using conventional first order Raman amplifiers, multiple-order amplifier systems can have reduced noise, longer fiber span lengths and reduced nonlinearities. In a preferred embodiment the system uses signal wavelengths in the range 1530-1570 nm, first order Raman pumping at 1430-1475 nm and second order pumping at about 1345 nm. Advantageously, the second order pump light is copropagating with the signal light and the first order pump is counterpropagating with the signal.

    Modified chemical vapor deposition using independently controlled thermal sources
    15.
    发明公开
    Modified chemical vapor deposition using independently controlled thermal sources 有权
    改进的化学气相沉积源独立地受控的热

    公开(公告)号：EP0965569A1

    公开(公告)日：1999-12-22

    申请号：EP99304078.1

    申请日：1999-05-26

    Applicant: LUCENT TECHNOLOGIES INC.

    Inventor： Marszalek, Stanley F. ,  Nelson, Katherine Theresa ,  Walker, Kenneth Lee ,  Womack, Kim Willard ,  Yan, Man Fei

    IPC: C03B37/018

    CPC classification number: C03B37/01815

    Abstract: The deposition rate of MCVD processes is enhanced by applying to the outside of the deposition tube (101) at least a first (107) and a second (103) independently controlled heat source to a plurality of reactant vapours flowing in the tube which are used to form deposited particulate matter on the inside of the tube (101). The first heat source (107) is adjusted so as to provide at least a specified rate of reaction for the reactants, and the second source (103) is adjusted so as to provide at least a specified deposition rate on the inside of the tube (101) for the particulate matter formed by the chemical vapour reaction.

    Abstract translation: MCVD工艺的沉积速率是通过施加到沉积管（101）至少具有第一（107）和第二（103）unabhängig控制加热源的外部，以反应物蒸气在管中流动的多元使用哪些增强 以在管（101）的内部沉积的微粒物质。 第一热源（107）被调整，以提供至少在反应物反应的特定的速率，并且所述第二源（103）被调整，以在管的内侧提供至少一个指定的沉积速率（ 101），用于通过化学气相反应形成的颗粒物质。

    Article comprising a rare earth-doped optical fiber laser
    16.
    发明公开
    Article comprising a rare earth-doped optical fiber laser 有权
    Mitel seltenen Erden dotierter optische Faserlaser enthaltender Artikel

    公开(公告)号：EP0918381A1

    公开(公告)日：1999-05-26

    申请号：EP98309179.4

    申请日：1998-11-10

    Applicant: LUCENT TECHNOLOGIES INC.

    Inventor： Headley, Clifford ,  Walker, Kenneth Lee

    IPC: H01S3/06

    CPC classification number: H01S3/067 ,  H01S3/0675 ,  H01S3/06758 ,  H01S3/094003 ,  H01S2301/02

    Abstract: At least some rare earth-doped optical fiber lasers are subject to self-pulsing and/or relatively high noise. We have found that these shortcomings can be eliminated if the cavity length of the fiber laser is increased, typically by inclusion of a length Λ of rare earth-free conventional (single mode) transmission fiber (44) in the cavity, with Λ > 0.3L, where L is the effective cavity length of the laser.

    Abstract translation: 至少一些稀土掺杂光纤激光器经受自脉冲和/或相对高的噪声。 我们已经发现，如果纤维激光器的腔长度增加，通常通过在腔中包含长度为无稀土常规（单模）传输光纤（44）的长度LAMBDA，LAMBDA> 0.3，可以消除这些缺点 L，其中L是激光器的有效腔体长度。

    Fiber light source with multimode fiber coupler
    17.
    发明公开
    Fiber light source with multimode fiber coupler 失效
    带多模光纤耦合器的光纤光源

    公开(公告)号：EP0812039A2

    公开(公告)日：1997-12-10

    申请号：EP97303565.2

    申请日：1997-05-27

    Applicant: LUCENT TECHNOLOGIES INC.

    Inventor： DiGiovanni, David John ,  Grubb, Stephen Gregory ,  Inniss, Daryl ,  Jameson, Ralph Stephen ,  Walker, Kenneth Lee

    IPC: H01S3/06 ,  H01S3/094

    CPC classification number: G02B6/4215 ,  G02B6/14 ,  G02B6/29356 ,  G02B6/2937 ,  G02B6/4207 ,  H01S3/0675 ,  H01S3/094003 ,  H01S3/094069

    Abstract: In an optical fiber light source a section of multimode fiber (51) is interposed between an energizing laser (e.g., a diode laser (49)) and a single mode fiber active medium (43). In a preferred embodiment the single mode fiber active medium is surrounded by a multimode cladding (45) coupled to the multimode fiber. The source may serve as a pump laser for a fiber amplifier (30) or as an amplified spontaneous emission source. Arrangements for coupling several energizing lasers to the active medium are also described.

    Abstract translation: 在光纤光源中，一段多模光纤（51）插入激励激光器（例如二极管激光器（49））和单模光纤有源介质（43）之间。 在一个优选实施例中，单模光纤活性介质被耦合到多模光纤的多模包层（45）包围。 光源可以用作光纤放大器（30）的泵浦激光器或放大的自发辐射源。 还描述了将几个激励激光器耦合到激活介质的装置。

    Optical communication system incoprorating automatic dispersion compensation modules
    18.
    发明公开
    Optical communication system incoprorating automatic dispersion compensation modules 有权
    具有自动色散补偿模块的光传输系统

    公开(公告)号：EP1030472A3

    公开(公告)日：2004-04-14

    申请号：EP00300991.7

    申请日：2000-02-09

    Applicant: LUCENT TECHNOLOGIES INC.

    Inventor： Eggleton, Benjamin John ,  Nielsen, Torben N. ,  Rogers, John A. ,  Strasser, Thomas Andrew ,  Walker, Kenneth Lee

    IPC: H04B10/18

    CPC classification number: H04B10/2519 ,  H04B2210/252

    Abstract: In accordance with the invention, an optical communication system is provided with one or more automatic dispersion compensation modules. Each module has an adjustable dispersion element, a data integrity monitor and a feedback network whereby the monitor adjusts the dispersion element to optimize system performance. In a preferred embodiment the dispersion compensating modules comprise chirped fiber Bragg gratings in which the chirp is induced in the grating by passing a current along distributed thin film heaters deposited along the length of the fiber. The magnitude of the applied current determines the dispersion of the grating. A data integrity monitor is configured to sense the integrity of transmitted data and to provide electrical feedback for controlling the current applied to the grating.

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