公开(公告)号：EP2044706B1

公开(公告)日：2013-05-01

申请号：EP07873763.2

申请日：2007-05-29

申请人： TTI Inventions E LLC

发明人： MENENDEZ, Ronald, C.

IPC分类号： H04B10/61

CPC分类号： H04J14/005 ,  H04B10/61 ,  H04B2210/258

公开(公告)号：EP1635211B1

公开(公告)日：2011-08-17

申请号：EP04746231.2

申请日：2004-06-16

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： FUJIWARA, Masamichi, c/o NTT IP Center ,  KANI, Junichi, NTT Intellectual Property Center ,  AKIMOTO, Koji, NTT Intellectual Property Center ,  IWATSUKI, Katsumi, c/o NTT IP Center

IPC分类号： G02F1/01

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

摘要： A reflection optical modulator including a bidirectional optical amplifier, or a multi-wavelength simultaneous optical modulating device composed by combining reflection optical modulators. BY numerically limiting the relation between the gain of the bidirectional optical amplifier and the loss of the optical modulators or by inserting polarization rotating means, the influence of the light reflected at the ends of the bidirectional optical amplifier is lessened, and a stable amplifying function is realized. A transmission optical modulator including semiconductor optical amplifiers (SOAs) connected in multiple stages is also disclosed. Optical isolators are inserted every other SOAs. Thus, the influence of the reflected light is lessened, and a stable amplifying function and reduction of the cost are both realized.

公开(公告)号：EP0938001B1

公开(公告)日：2011-04-20

申请号：EP99300952.1

申请日：1999-02-09

申请人： LUCENT TECHNOLOGIES INC.

发明人： Judy, Arthur F. ,  Kalish, David ,  Kummer, Raymond Bradfield ,  Peckham, David Wayne ,  Reed, William Alfred

IPC分类号： G02B6/02

CPC分类号： G02B6/03666 ,  G02B6/02009 ,  G02B6/02223 ,  G02B6/02242 ,  G02B6/02271 ,  G02B6/0281 ,  G02B6/03611 ,  G02B6/03627 ,  G02B6/03644 ,  H04B10/291 ,  H04B10/2916 ,  H04B2210/258

公开(公告)号：EP1250737B1

公开(公告)日：2009-09-16

申请号：EP01901994.2

申请日：2001-01-12

申请人： Xtera Communications, Inc.

发明人： ISLAM, Mohammed, N. ,  FREEMAN, Michael

IPC分类号： H01S3/30 ,  H04B10/17

CPC分类号： H04B10/2916 ,  H01S3/06758 ,  H01S3/094011 ,  H01S3/094015 ,  H01S3/094096 ,  H01S3/302 ,  H04B2210/258

摘要： A Raman amplifier assembly inlcudes a Raman amplifier configured to receive a signal from a signal source. The signal travels in an upstream direction in the Raman amplifier. A first pump source is coupled to the Raman amplifier. The first pump source produces a first pump beam that travels in a downstream direction and is counter-propagating relative to the signal. A second pump source is coupled to the Raman amplifier and produces a second pump beam that travels in the upstream direction. The second pump source has an average relative intensity noise of less than -80 db/Hz.

公开(公告)号：EP1317083B1

公开(公告)日：2009-02-18

申请号：EP02005317.9

申请日：2002-03-13

申请人： FUJITSU LIMITED

发明人： Kumasako, Junichi, c/o Fujitsu Limited ,  Terahara, Takafumi, c/o Fujitsu Limited

IPC分类号： H04B10/17

CPC分类号： H04B10/2916 ,  H04B2210/003 ,  H04B2210/258

公开(公告)号：EP1175029B1

公开(公告)日：2009-01-28

申请号：EP00970107.9

申请日：2000-10-26

申请人： FUJITSU LIMITED

发明人： SEKIYA, Motoyoshi, Fujitsu Limited ,  TOMOFUJI, Hiroaki, Fujitsu Limited

IPC分类号： H04B10/17 ,  H04J14/02

CPC分类号： H04B10/2941 ,  H01S3/30 ,  H04B10/2537 ,  H04B10/2942 ,  H04B2210/258 ,  H04J14/0221

摘要： An optical amplifying device and a compound optical amplifying device for compensating lost wavelength characteristics in an optical transmission line by gain wavelength characteristics, and an optical communication system having these devices in an optical transmitting device, optical relaying device and optical receiving device. Those devices and the optical communication system can provide a wider wavelength band and a longer transmission distance.

公开(公告)号：EP1943757A2

公开(公告)日：2008-07-16

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：EP1349301B1

公开(公告)日：2008-07-16

申请号：EP03002522.5

申请日：2003-02-05

申请人： FUJITSU LIMITED

发明人： Ooi, Hiroki ,  Iwabuchi, Takashi, c/o Fujitsu Higashi-Nihon Digital ,  Terahara, Takafumi ,  Kumasako, Junichi ,  Ishikawa, George ,  Takahara, Tomoo

IPC分类号： H04B10/18

CPC分类号： H04B10/25133 ,  H04B2210/258

公开(公告)号：EP1241810B1

公开(公告)日：2008-04-02

申请号：EP02290605.1

申请日：2002-03-11

申请人： FUJIKURA LTD.

发明人： Saitou, Manabu, c/o Fujikura Ltd.,Sakura Works ,  Aikawa, Kazuhiko, c/o Fujikura Ltd.,Sakura Works ,  Matsuo, Shoichiro, c/o Fujikura Ltd.,Sakura Works

IPC分类号： H04B10/18 ,  G02B6/02

CPC分类号： G02B6/02019 ,  G02B6/02261 ,  G02B6/02271 ,  G02B6/0228 ,  G02B6/03611 ,  G02B6/03644 ,  G02B6/29377 ,  H04B10/25253 ,  H04B2210/258

公开(公告)号：EP1689101A3

公开(公告)日：2007-03-07

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.