公开(公告)号：EP1819072B1

公开(公告)日：2012-11-28

申请号：EP06290265.5

申请日：2006-02-14

申请人： Alcatel Lucent

发明人： Charlet, Gabriel ,  Antona, Jean-Christophe

IPC分类号： H04B10/18

CPC分类号： H04B10/25133 ,  H04B2210/258

公开(公告)号：EP1394525A3

公开(公告)日：2011-06-22

申请号：EP03300100.9

申请日：2003-08-28

申请人： Nexans

发明人： RENARD, Xavier ,  TOUYA, Alexandre

IPC分类号： G01M11/00

CPC分类号： G01M11/3136 ,  H04B10/071 ,  H04B2210/258

摘要： La présente invention concerne un système 10 pour le contrôle par réflectométrie dans le domaine temporel (OTDR) d'une pluralité de lignes 13 de fibres optiques d'un réseau de télécommunication, plus particulièrement adapté aux réseaux arborescents de type PON (Passive Optical Network). Ledit système comporte une pluralité de lignes 13 de fibre optique, un coupleur 7 ayant une entrée et une pluralité de sortie, chacune desdites sorties étant reliées à une ligne de ladite pluralité de lignes 13, ledit système 10 étant caractérisé en ce qu'il comporte des moyens 14 pour séparer chacune desdites lignes 13 en deux voies : une première voie 18 pour recevoir une première impulsion de contrôle correspond à un premier contrôle et une deuxième voie 19 pour recevoir une deuxième impulsion de contrôle correspondant à un deuxième contrôle, la longueur de ladite deuxième voie étant supérieure à la longueur de ladite première voie d'une surlongueur 15 prédéterminée, chacune desdites surlongueurs 15 étant différente pour chacune desdites lignes 13.

公开(公告)号：EP2290853A2

公开(公告)日：2011-03-02

申请号：EP10174639.4

申请日：2010-08-31

申请人： FUJITSU LIMITED

发明人： Ooi, Hiroki

IPC分类号： H04B10/18

CPC分类号： H04B10/2513 ,  H04B2210/003 ,  H04B2210/258

摘要： An optical transmission system includes an optical transmission equipment (100) and an optical receiving device (300; 400). The optical transmission equipment transmits an optical signal from a first adjacent node to a second adjacent node, and includes an optical multiplexing and demultiplexing unit that demultiplexes the optical signal from the first adjacent node into an optical transmission signal to be transmitted to the second adjacent node and an optical demultiplexed signal, and a compensating unit (140) that partially compensates chromatic dispersion in the optical demultiplexed signal. The optical receiving device receives the optical signal from the optical transmission equipment, and includes a converting unit (430) that converts the optical demultiplexed signal the chromatic dispersion of which is partially compensated by the compensating unit (140) into an electric digital signal, and a digital processing uni (440) that compensates chromatic dispersion remaining in the electric digital signal.

摘要翻译： 光传输系统包括光传输设备（100）和光接收设备（300; 400）。 光传输设备将光信号从第一相邻节点传送到第二相邻节点，并且包括光复用和解复用单元，其将来自第一相邻节点的光信号解复用为要传输到第二相邻节点的光传输信号 和光解复用信号，以及部分补偿光解复用信号中的色散的补偿单元（140）。 光接收装置接收来自光传输设备的光信号，并包括转换单元（430），其将其色散被补偿单元（140）部分地补偿的光解复用信号转换为电数字信号，以及 用于补偿电数字信号中剩余色散的数字处理单元（440）。

公开(公告)号：EP2253991A2

公开(公告)日：2010-11-24

申请号：EP10175373.9

申请日：2004-06-16

申请人： Nippon Telegraph And Telephone Corporation

发明人： Fujiwara, Masamichi ,  Kani, Junichi ,  Akimoto, Koji ,  Iwatsuki, Katsumi

IPC分类号： G02F1/01

CPC分类号： H04B10/2587 ,  H04B10/2971 ,  H04B2210/258 ,  H04J14/02

摘要： An optical modulation apparatus is provided which implements a stable amplifying function by reducing the effect of reflected light rays from end faces of a bidirectional optical amplifier by imposing a numerical limitation on the relationship between the gain of the bidirectional optical amplifier and the loss of the optical modulator, or by inserting a polarization rotation section in a reflection type optical modulator including the bidirectional optical amplifier or in a multi-wavelength collective optical modulation system combining the multiple optical modulators. An optical modulation apparatus is provided which implements a stable amplifying function and cost reduction by reducing the effect of reflected light rays by interposing optical isolators at every alternate SOAs in a transmission-type optical modulation apparatus including a plurality of semiconductor optical amplifiers (SOAs) connected in a multistage fashion.

公开(公告)号：EP1943757B1

公开(公告)日：2009-05-13

申请号：EP07762845.1

申请日：2007-01-30

申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

发明人： BEAUSOLEIL, Raymond ,  MUNRO, William, J. ,  SPILLER, Timothy, P. ,  HARRISON, Keith

IPC分类号： H04B10/30 ,  H04B10/08

CPC分类号： H04B10/0791 ,  H04B2210/258

摘要： Various embodiments of the present invention are directed to methods and systems for circumventing, and altering transmission-channel users of, transmission-channel disruptions. In one embodiment of the present invention, a source (1602, 1702) encodes information in a first signal and transmits the first signal in a source channel (1610, 1712) to a multiplexer (1604, 1704). The multiplexer (1604, 1704) distributes the first signal over N transmission channels (1612, 1718). A demultiplexer (1606, 1806) combines the signals distributed over the N transmission channels (1612, 1718) into a second signal encoding of the information. The distribution system also includes a detector (1608,1730) that receives the second signal output from the demultiplexer (1606, 1706), and one or more detectors (1620, 1732) that receive one or more additional signals output from the demultiplexer (1606, 1706). The additional signals are produced by the demultiplexer (1606, 1706) when a disruption occurs in one or more of the transmission channels and are used to alert transmission-channel users of the disruption.

公开(公告)号：EP1069712B1

公开(公告)日：2008-09-10

申请号：EP00401982.4

申请日：2000-07-10

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： Masuda, Hiroji, c/o Nippon Telegraph & Tel. Corp. ,  Kani, Junichi, c/o Nippon Telegraph & Tel. Corp. ,  Takachio, Noboru, c/o Nippon Telegraph & Tel. Corp

IPC分类号： H04B10/17 ,  H01S3/067

CPC分类号： H04B10/294 ,  H04B2210/258

公开(公告)号：EP1215527B1

公开(公告)日：2006-10-04

申请号：EP00956816.3

申请日：2000-08-30

申请人： FUJITSU LIMITED

发明人： SUGAYA, Yasushi, Fujitsu Ltd ,  TANAKA, Tomoto, Fujitsu Hokkaido Digital Tech. Ltd ,  HAYASHI, Etsuko, Fujitsu Ltd.

IPC分类号： G02F1/35 ,  H01S3/10 ,  H01S3/30

CPC分类号： H04B10/2916 ,  H01S3/06758 ,  H01S3/094096 ,  H01S3/10015 ,  H01S3/1301 ,  H01S3/1608 ,  H01S3/2375 ,  H01S3/30 ,  H01S3/302 ,  H01S2301/02 ,  H01S2301/04 ,  H01S2302/02 ,  H04B2210/258

摘要： A light amplifier improved in noise characteristics by controlling an amplifying operation with a noise light effect by Raman amplification taken into consideration and with a noise factor of the entire amplifier assumed, and a control method thereof. The light amplifier comprises a first light amplifying means for Raman-amplifying a signal light by supplying an excitation light to a Raman amplifying medium, a second light amplifying means for amplifying the signal light output from the first light amplifying means, a target value setting means for setting a target value that minimizes a noise factor of the entire amplifier with respect to an input light power of the second light amplifying means, and an excitation light controlling means for controlling an excitation light supply status of the first light amplifying means according to the target value set by the target value setting means, whereby the noise characteristics of the entire amplifier can be optimized by an in-amplifier control to implement excellent noise characteristics.

公开(公告)号：EP1689101A2

公开(公告)日：2006-08-09

申请号：EP06076011.3

申请日：2000-10-18

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： Takiguchi, Koichi;c/o NTT Intellectual ,  Okamoto, Katsunari;c/o NTT Intellectual ,  Goh, Takashi;c/o NTT Intellectual

IPC分类号： H04B10/18 ,  G02B6/34

CPC分类号： G02B6/29394 ,  G02B6/12007 ,  G02B6/12021 ,  G02B6/29353 ,  G02B6/29355 ,  G02B6/29395 ,  G02B6/29398 ,  H04B10/25133 ,  H04B2210/258

摘要： The object of the present invention is to provide a compact dispersion slope equalizer by which it is possible to simultaneously recover distorted waveforms of WDM signals by dispersion slope of DSF or NZ-DSF at 1.55µm band, and to compensate for the dispersion of various fiber transmission lines having various dispersion values and variation of dispersion value caused by the temperature change or the like. WDM signals distorted by the dispersion slope of the fiber are introduced into an input waveguide (1, 20), and are demultiplexed by a wavelength demultiplexer (2, 21) into each wavelength component, and pass through lattice-form optical circuits (4-1 to 4-N), transversal-form optical circuits (23-1 to 23-N), or the combination of these circuits. The dispersion slope of the signals is compensated for by these circuits. The recovered signals are multiplexed by a wavelength multiplexer (5, 24), and the multiplexed light is outputted at an output waveguide (6, 25). Arrayed-waveguide gratings can be used as the wavelength demultiplexer and multiplexer. Also, cascaded configuration of Mach-Zehnder interferometers, bulk-type optical filters, or fiber-type (or waveguide-type) gratings in series can also be used as the wavelength demultiplexer and multiplexer.

摘要翻译： 本发明的目的是提供一种紧凑的色散斜率均衡器，通过该紧凑型色散斜率均衡器可以通过在1.55μm波段的DSF或NZ-DSF的色散斜率同时恢复WDM信号的失真波形，并补偿各种光纤的色散 具有各种色散值的传输线和由温度变化等引起的色散值的变化。 通过光纤的色散斜率失真的WDM信号被引入到输入波导（1,20）中，并被波分解复用器（2,21）解复用成每个波长分量，并通过格子形光路（4- 1至4-N），横向形式的光学电路（23-1至23-N）或这些电路的组合。 信号的色散斜率由这些电路补偿。 恢复的信号由波长多路复用器（5,24）复用，并且复用的光在输出波导（6,25）处输出。 阵列波导光栅可以用作波长解复用器和多路复用器。 此外，还可以使用串联的马赫 - 曾德干涉仪，体式光学滤波器或光纤型（或波导型）光栅的级联配置作为波长解复用器和多路复用器。

公开(公告)号：EP1635487A2

公开(公告)日：2006-03-15

申请号：EP05027615.3

申请日：1998-11-30

申请人： NEC Corporation

发明人： Shimomura, Hirofumi ,  Henmi, Naoya

IPC分类号： H04B10/17 ,  H04J14/02 ,  H01S3/10

CPC分类号： H04B10/25073 ,  H04B10/2941 ,  H04B2210/258 ,  H04J14/02 ,  H04J14/0221

摘要： Disclosed is an optical signal repeating and amplifying device which has: an optical amplifier which amplifies an optical signal to be input thereto and then outputs it; and an optical filter means through which only one wavelength light of the optical signal to be output from the optical amplifier is passed. Also disclosed is an optical level adjusting device which has: an optical demultiplexer which demultiplexes a wavelength-multiplexed optical signal into a plurality of wavelength lights; a plurality of optical attenuators which attenuate separately the demultiplexed plurality of wavelength lights to be output from the optical demultiplexer; and an optical multiplexer which multiplexes the attenuated wavelength lights to be output from the plurality of optical attenuators into a wavelength-multiplexed optical signal and output it.

摘要翻译： 公开了一种光信号中继和放大装置，其具有：光学放大器放大哪个光信号的以与其输入，然后输出它; 并通过手段滤光器仅使光信号中的一个波长的光被输出来自光放大器被传递。 游离缺失所以盘是具有光平调整装置，在其中解复用的波长复用的光信号转换成的波长的光的多个光学多路分解器; 其中分别衰减的波长的光解复用的多元性可从光学信号分离器输出的光衰减器的一个多元化; 和光多路复用器多路复用待衰减的波长的光从光衰减器的多个输出成波长复用光信号，并输出它。

公开(公告)号：EP1014607B1

公开(公告)日：2005-07-13

申请号：EP99403120.1

申请日：1999-12-13

申请人： ALCATEL

发明人： Bigo, Sébastien ,  Bellotti, Giovanni

IPC分类号： H04B10/18 ,  H04J14/02

CPC分类号： H04B10/2519 ,  H04B10/2525 ,  H04B10/2557 ,  H04B2210/258 ,  H04J14/02