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    Optical wavelength add/drop multiplexer for dual signal transmission rates
    3.
    发明公开
    Optical wavelength add/drop multiplexer for dual signal transmission rates 审中-公开
    OptischerWellenlängen-Add / dropmultiplexerfürÜbertragungsratenmit Dualsignalen

    公开(公告)号：EP1109341A2

    公开(公告)日：2001-06-20

    申请号：EP00310736.4

    申请日：2000-12-04

    Applicant: LUCENT TECHNOLOGIES INC.

    Inventor： Nielsen, Torben N. ,  Spector, Magaly ,  Thompson, William A.

    IPC: H04J14/02

    CPC classification number: H04J14/0201

    Abstract: An optical wavelength add/drop multiplexer (WADM) is configured to add or drop two or more signals each associated with one of a plurality of channels in a wavelength division multiplexed (WDM) signal. The WADM comprises an optical circulator that is optically coupled at one port to two or more serially interconnected fiber Bragg gratings (FBGs), and is optically coupled at another port to a thin film filter including two or more serially interconnected thin film filter elements. Each of the two or more FBGs is matched with a thin film filter element, both arranged to be responsive to signals associated with one of the plurality of channels. Bandwidth and dispersion properties for the FBGs are selected to permit operation of the WADM at two distinct signal data rates. To equalize associated insertion losses in embodiments of the invention arranged to add or drop two or more signals, the FBGs are matched to the thin film filter elements in inverse order with respect to their optical distance from the optical circulator.

    Abstract translation: 光波长分插多路复用器（WADM）被配置为在波分复用（WDM）信号中加入或分出与多个信道之一相关联的两个或更多个信号。 WADM包括在一个端口光学耦合到两个或更多个串联的光纤布拉格光栅（FBG）的光环行器，并且在另一个端口光耦合到包括两个或更多个串联的薄膜滤波器元件的薄膜滤波器。 两个或更多个FBG中的每一个与薄膜滤波器元件匹配，两个布置成响应于与多个通道中的一个通道相关联的信号。 选择FBG的带宽和色散特性以允许以两种不同的信号数据速率操作WADM。 为了平衡本发明的实施例中相关联的插入损耗，其布置成添加或丢弃两个或更多个信号，FBG相对于其与光循环器的光学距离相反的顺序与薄膜滤波器元件匹配。

    Optical wavelength add/drop multiplexer for dual signal transmission rates
    4.
    发明公开
    Optical wavelength add/drop multiplexer for dual signal transmission rates 审中-公开
    用于具有双信号的传输速率的光波长分/插复用器

    公开(公告)号：EP1109341A3

    公开(公告)日：2005-09-28

    申请号：EP00310736.4

    申请日：2000-12-04

    Applicant: LUCENT TECHNOLOGIES INC.

    Inventor： Nielsen, Torben N. ,  Spector, Magaly ,  Thompson, William A.

    IPC: H04J14/02 ,  G02B6/34

    CPC classification number: H04J14/0201

    Abstract: An optical wavelength add/drop multiplexer (WADM) is configured to add or drop two or more signals each associated with one of a plurality of channels in a wavelength division multiplexed (WDM) signal. The WADM comprises an optical circulator that is optically coupled at one port to two or more serially interconnected fiber Bragg gratings (FBGs), and is optically coupled at another port to a thin film filter including two or more serially interconnected thin film filter elements. Each of the two or more FBGs is matched with a thin film filter element, both arranged to be responsive to signals associated with one of the plurality of channels. Bandwidth and dispersion properties for the FBGs are selected to permit operation of the WADM at two distinct signal data rates. To equalize associated insertion losses in embodiments of the invention arranged to add or drop two or more signals, the FBGs are matched to the thin film filter elements in inverse order with respect to their optical distance from the optical circulator.

    Optical communication system incoprorating automatic dispersion compensation modules
    6.
    发明公开
    Optical communication system incoprorating automatic dispersion compensation modules 有权
    OptischesÜbertragungssystemmit automatischen dispersionskompensierenden Modulen

    公开(公告)号：EP1030472A2

    公开(公告)日：2000-08-23

    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.

    Abstract translation: 根据本发明，光通信系统设置有一个或多个自动色散补偿模块。 每个模块都具有可调色散元件，数据完整性监视器和反馈网络，由此监视器调整色散元件以优化系统性能。 在优选实施例中，色散补偿模块包括啁啾光纤布拉格光栅，其中通过沿沿着光纤的长度沉积的分布式薄膜加热器传递电流而在光栅中感应啁啾。 施加电流的大小决定了光栅的色散。 数据完整性监视器被配置为感测发射数据的完整性，并提供用于控制施加到光栅的电流的电反馈。

    Reduction of four-wave mixing in Raman amplified optical transmission systems
    8.
    发明公开
    Reduction of four-wave mixing in Raman amplified optical transmission systems 有权
    Vierwellenmischungsverminderung在optischenÜbertragungssystemenmit Raman-Verstärkung

    公开(公告)号：EP1130705A2

    公开(公告)日：2001-09-05

    申请号：EP01301420.4

    申请日：2001-02-19

    Applicant: LUCENT TECHNOLOGIES INC.

    Inventor： Nielsen, Torben N. ,  Rottwitt, Karsten ,  Stentz, Andrew John

    IPC: H01S3/30 ,  H04B10/17

    CPC classification number: H04B10/2916 ,  H01S3/302 ,  H04B10/2563

    Abstract: A Raman amplified transmission includes at least two pump sources to provide amplification to optical signals residing in the C-band (1530 - 1562nm) and L-band (1574 - 1604nm). The pump signals are chosen so as to provide for a relatively flat and wide composite gain spectrum with a width at least 50% greater than that generated by a monochromatic pump, while also chosen so as to prevent any four-wave mixing products from being in either the C- or L-bands.

    Abstract translation: 拉曼放大的传输包括至少两个泵浦源，以对驻留在C波段（1530-1562nm）和L波段（1574-1604nm）内的光信号进行放大。 选择泵浦信号以提供相对平坦且宽的复合增益谱，其宽度比单色泵产生的宽度大至少50％，同时还被选择以防止任何四波混频产物处于 无论是C波段还是L波段。

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