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1. 发明专利

JP2007163666A Optical prism for optical communication and optical transmission/reception module 有权
标题翻译：光通信和光传输/接收模块的光学原理
公开(公告)号：JP2007163666A
公开(公告)日：2007-06-28
申请号：JP2005357689
申请日：2005-12-12
申请人： Hitachi Communication Technologies Ltd , 株式会社日立コミュニケーションテクノロジー
发明人： TANAKA KENICHI , SHISHIKURA MASATO , SEKINE KENRO , SUGAWARA TOSHIKI , MATSUOKA YASUNOBU
IPC分类号： G02B5/04 , G02B6/42
CPC分类号： G02B7/1805 , G02B6/4246 , H04B10/40
摘要： PROBLEM TO BE SOLVED: To provide an optical prism for optical communication in which the number of parts is reduced, which has compacter constitution and is equipped with a mounting means and further to provide an optical transmission/reception module which has a light receiving part and a light emitting part and which mounts these parts with high accuracy by using a substrate and a pedestal as a base.
SOLUTION: The pedestal is provided on the substrate and positioning is carried out by using a mark on the pedestal to mount the optical prism for optical communication, in which an optical lens with a supporting part for mounting and a wavelength separation film are integrated, on the pedestal with high accuracy. Further the light receiving part and the light emitting part are mounted with high accuracy by positioning by using the marks on the substrate and the pedestal.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：解决的问题：为了提供一种光学通信的光学棱镜，其中部件的数量减少，其具有较强的结构并且具有安装装置，并且还提供一种具有光的光学发射/接收模块接收部分和发光部分，并且通过使用基板和基座作为基座，以高精度安装这些部件。解决方案：基座设置在基板上，通过在基座上使用标记来进行定位，以安装用于光通信的光学棱镜，其中具有用于安装的支撑部件的光学透镜和波长分离膜为集成在基座上，具有高精度。此外，通过使用基板和基座上的标记进行定位，高精度地安装光接收部分和发光部分。版权所有（C）2007，JPO＆INPIT

2. 发明专利

JP2008154123A Dispersion compensation device, optical transmission system, and optical transmission method 有权
标题翻译：分散补偿装置，光传输系统和光传输方法
公开(公告)号：JP2008154123A
公开(公告)日：2008-07-03
申请号：JP2006342070
申请日：2006-12-20
申请人： Hitachi Communication Technologies Ltd , 株式会社日立コミュニケーションテクノロジー
发明人： SEKINE KENRO
IPC分类号： H04B10/2507 , H04B10/2525
CPC分类号： H04B10/2525 , G02B6/29394 , G02B6/29395
摘要： PROBLEM TO BE SOLVED: To provide a variable dispersion slope compensator with inexpensive structure which highly precisely compensates a dispersion slope compensation error caused by variations of zero dispersion wave lengths in transmission fibers in a long-distance high speed WDM transmission system.
SOLUTION: The variable dispersion slope compensator 11 comprises: when a value obtained by dividing a dispersion slope (ps/nm/nm/km) of the optical fiber by a dispersion coefficient (ps/nm/km) is defined as a relative dispersion slope RDS (/nm), a first dispersion compensation fiber group 21(21-1, 21-2, 21-3) comprising at least two or more dispersion compensation fibers having a relative dispersion slope RDSa in common; a second dispersion compensation fiber group 22(22-1, 22-2, 22-3) comprising at least two or more dispersion compensation fibers having a relative dispersion slope RDSb in common which is different from the relative dispersion slope RDSa owned by the first dispersion compensation fiber group; and optical switch group or patch cable group for achieving arbitrary connection combinations between the first and the second dispersion compensation fiber groups.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种廉价结构的可变色散斜率补偿器，其高度精确地补偿由长距离高速WDM传输系统中的传输光纤中零色散波长的变化引起的色散斜率补偿误差。解决方案：可变色散斜率补偿器11包括：当通过将光纤的色散斜率（ps / nm / nm / km）除以色散系数（ps / nm / km）而获得的值被定义为包括相对色散斜率RDS（/ nm）的第一色散补偿光纤组21（21-1,21-2,21-3），其包括至少两个或更多个具有相对色散斜率RDSa的色散补偿光纤; 包括至少两个或更多个色散补偿光纤的第二色散补偿光纤组22（22-1,22-2,22-3），所述色散补偿光纤具有共同的相对色散斜率RDSb，其不同于由第一色散补偿光纤组; 和光开关组或跳线电缆组，用于实现第一和第二色散补偿光纤组之间的任意连接组合。版权所有（C）2008，JPO＆INPIT

3. 发明专利

JP2007202009A Wdm transmission system 有权
标题翻译： WDM传输系统
公开(公告)号：JP2007202009A
公开(公告)日：2007-08-09
申请号：JP2006020529
申请日：2006-01-30
申请人： Hitachi Communication Technologies Ltd , 株式会社日立コミュニケーションテクノロジー
发明人： SEKINE KENRO
IPC分类号： H04B10/2507 , H04B10/2519 , H04B10/2525 , H04J14/00 , H04J14/02
CPC分类号： H04J14/0279 , H04B10/25133 , H04J14/02 , H04J14/0212
摘要： PROBLEM TO BE SOLVED: To enable a variable dispersion compensator, which compensates wavelength-dependent cumulative dispersion attendant on the wavelength-dependent properties of transmission fibers and a fixed dispersion compensator in a long-haul high-speed WDM transmission system controlled at a high speed with an inexpensive configuration. SOLUTION: The wavelength-dependent representative characteristics of transmission fibers 4-1 to 4-n and the wavelength-dependent representative characteristics of DCF 13-1 to 13-n are previously recorded and stored in the dispersion control circuits 5-1 to 3 of a variable dispersion compensator 16, the amount of dispersion and the length of fibers at the representative wavelength of the transmission fibers and the amount of dispersion at the representative wavelength of DCF are inputted, the amount of cumulative dispersion compensation is calculated from the wavelength-dependent representative characteristics which are previously recorded and stored, and the amount of dispersion of the variable dispersion compensator 16 is determined on the basis of the amount of cumulative dispersion compensation. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了实现可变色散补偿器，其补偿伴随传输光纤的波长依赖性质的波长依赖性累积色散，以及控制在长距离高速WDM传输系统中的固定色散补偿器具有廉价配置的高速度。解决方案：传输光纤4-1至4-n的波长相关代表性特征和DCF 13-1至13-n的波长相关代表性特性预先记录并存储在色散控制电路5-1中到3的可变色散补偿器16中，输入传输光纤的代表波长的光纤的分散量和长度以及DCF的代表性波长的色散量，累积色散补偿量由根据累积色散补偿量来确定先前记录和存储的与波长相关的代表性特征，并且可变色散补偿器16的色散量被确定。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2006180417A Optical transmission apparatus 审中-公开
标题翻译：光传输装置
公开(公告)号：JP2006180417A
公开(公告)日：2006-07-06
申请号：JP2004374130
申请日：2004-12-24
申请人： Hitachi Communication Technologies Ltd , 株式会社日立コミュニケーションテクノロジー
发明人： HASEGAWA CHIE , SEKINE KENRO , KIKUCHI NOBUHIKO
IPC分类号： H04B10/11 , H04B10/07 , H04B10/112 , H04B10/293 , H04B10/564 , H04B10/572 , H04J14/00 , H04J14/02
摘要： PROBLEM TO BE SOLVED: To suppress a power level of a wavelength multiplexed signal other than a wavelength allocated for branch insertion, from being varied if any fault occurs on an optical spatial transmission line in a network node coupling an optical add-drop device and an optical spatial transmission device. SOLUTION: An optical transmission apparatus transmits, to an external space, a signal light split from a wavelength multiplexed signal by a light splitting means inside the optical add-drop device and inserts a signal light received from the outside into the wavelength multiplexed signal by a light inserting means inside the optical add-drop device, and the optical transmission apparatus comprises an optical amplifier for keeping constant a power level of the signal received from the outside. Furthermore, the optical transmission apparatus includes an optical switch for loop-back for looping back the signal light split from the wavelength multiplexed signal by the light splitting means and inserting the signal light into the wavelength multiplexed signal by the light inserting means if the signal light from the outside is turned into signal interruption state. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了抑制分配给分支插入的波长复用信号以外的波长复用信号的功率电平，如果在耦合光学分插的网络节点中的光空间传输线上发生任何故障，则变化设备和光学空间传输设备。解决方案：光传输装置通过光分插装置内的光分离装置向外部空间发送从波长多路复用信号分离的信号光，并将从外部接收的信号光插入波长多路复用信号通过光插入装置内的光插入装置，并且光传输装置包括用于保持从外部接收的信号的功率电平恒定的光放大器。此外，光传输装置包括用于环回的光开关，用于使由分光装置从波长多路复用信号分离的信号光环回，并且如果信号光线将信号光插入到波长多路复用信号中从外部变成信号中断状态。版权所有（C）2006，JPO＆NCIPI

5. 发明专利

JP2006033581A Optical transmission device 有权
标题翻译：光传输设备
公开(公告)号：JP2006033581A
公开(公告)日：2006-02-02
申请号：JP2004211518
申请日：2004-07-20
申请人： Hitachi Communication Technologies Ltd , 株式会社日立コミュニケーションテクノロジー
发明人： SEKINE KENRO , KOSAKA JUNYA , MATSUOKA TADASHI
IPC分类号： H04B10/07 , H04B10/03 , H04B10/079
CPC分类号： H04J14/0289 , H04J14/0221 , H04J14/0227 , H04J14/0246 , H04J14/025 , H04J14/0279
摘要： PROBLEM TO BE SOLVED: To provide a method for suppressing a malfunction in restoring a device caused by the fault reporting function of a light transmitter/receiver concerning a wavelength multiplex transmission device using a transponder.
SOLUTION: When an input determining circuit 56 determines that a transmission signal from a first light transmitter/receiver 10 is absent in a bidirectional wavelength multiplex transmission system, an output adjuster 57 is adjusted so as to shut down the transmission signal from an opposing second light transmitter/receiver. When the input determining circuit 56 determines that the transmission signal from the first light transmitter/receiver 10 is recovered, a shut-down operation in the output adjuster 57 is invalidated and control is performed to re-transmit the transmission signal from the second light transmitter/receiver 20 toward the first light transmitter/receiver 10.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：解决问题的方案：提供一种用于抑制由使用发射机应答器的波长多路传输装置的光发射机/接收机的故障报告功能引起的设备恢复故障的方法。解决方案：当输入确定电路56确定在双向波长多路复用传输系统中不存在来自第一光发射机/接收机10的传输信号时，调整输出调节器57以便关闭来自相对的第二个光发射机/接收机。当输入确定电路56确定来自第一光发射机/接收机10的传输信号恢复时，输出调节器57中的关闭操作无效，并且执行控制以从第二光发射机 /接收器20朝向第一光发射机/接收机10.版权所有（C）2006年，JPO和NCIPI

6. 发明专利

JP2005229165A Optical branch insertion multiplexing apparatus 有权
标题翻译：光分路插入式多路复用器
公开(公告)号：JP2005229165A
公开(公告)日：2005-08-25
申请号：JP2004033151
申请日：2004-02-10
申请人： Hitachi Communication Technologies Ltd , 株式会社日立コミュニケーションテクノロジー
发明人： SASAKI SHINYA , KIKUCHI NOBUHIKO , SEKINE KENRO
IPC分类号： H04B10/00 , H04B10/27 , H04B10/29 , H04J14/00 , H04J14/02 , H04B10/02
CPC分类号： H04J14/0216 , H04J14/0212 , H04J14/0217
摘要： PROBLEM TO BE SOLVED: To solve the problem that a plurality of optical branch insertion multiplexing apparatus to be provided in a communication node are required for each direction and this causes increase in communication cost, in an optical communication system for performing bidirectional transmission between communication nodes by a wavelength multiplexed signal.
SOLUTION: An optical circulator or an optical coupler is disposed on an input/output port of an optical branch insertion multiplexing apparatus to put together signals optical-wavelength multiplexed for each direction, thereby handling signals to be bidirectionally transmitted with a single optical branch insertion multiplexing apparatus.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：解决的问题为了解决在每个方向上需要设置在通信节点中的多个光分支插入复用装置的问题，并且这导致通信成本的增加，在用于执行双向传输的光通信系统中在通信节点之间通过波长复用信号。解决方案：光循环器或光耦合器设置在光分路插入多路复用装置的输入/输出端口上，以将每个方向光波长多路复用的信号组合在一起，从而处理使用单个光学双向传输的信号分支插入复用装置。版权所有（C）2005，JPO＆NCIPI

7. 发明专利

JP2009081747A Four-value phase modulator 有权
标题翻译：四值相位调制器
公开(公告)号：JP2009081747A
公开(公告)日：2009-04-16
申请号：JP2007250368
申请日：2007-09-27
申请人： Hitachi Communication Technologies Ltd , 株式会社日立コミュニケーションテクノロジー
发明人： SEKINE KENRO , KIKUCHI NOBUHIKO , SASAKI SHINYA
IPC分类号： H04L27/20 , G02F1/015 , H04B10/2513 , H04B10/293 , H04B10/516 , H04B10/556 , H04B10/564 , H04B10/572 , H04B10/588 , H04B10/61
CPC分类号： G02F1/0123 , G02F1/2255 , G02F2001/212 , H04B10/5053 , H04B10/50577 , H04B10/50595 , H04L27/2071 , H04L27/2096
摘要： PROBLEM TO BE SOLVED: To provide a four-value phase modulator which compensates for a bias drift, absorbs an influence of an individual variation upon device startup, and operates stably.
SOLUTION: The four-value phase modulator is configured to comprise: two phase modulators juxtaposed; and a phase shifter for adjusting a phase difference in composing outputs from the two phase modulators. The four-value phase modulator comprises: a first control means which comprises a second light source for introducing a light propagating in a reverse direction, for controlling a bias of the two phase modulators so as to minimize an intensity level of the same reversing light on the input side of the four-value phase modulator; and a second control means for controlling the bias of the phase shifter so as to minimize a result obtained by monitoring via a photodiode having a band of a bit rate or less on the output side of the four-value phase modulator. After the second control means is preferentially executed, the first control means is executed.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了提供补偿偏置漂移的四值相位调制器，吸收设备启动时个体变化的影响，并且稳定地操作。解决方案：四值相位调制器被配置为包括：两相调制器并置; 以及用于调整来自两相调制器的输出的相位差的移相器。四值相位调制器包括：第一控制装置，其包括用于引入沿相反方向传播的光的第二光源，用于控制两个相位调制器的偏置，以使相同的反转光的强度水平最小化四值相位调制器的输入端; 以及第二控制装置，用于控制移相器的偏置，以便通过在四值相位调制器的输出侧经由具有比特率或更小的频带的光电二极管监测而获得的结果最小化。在优先执行第二控制装置之后，执行第一控制装置。版权所有（C）2009，JPO＆INPIT

8. 发明专利

JP2006060659A Optical adapter 审中-公开
标题翻译：光学适配器
公开(公告)号：JP2006060659A
公开(公告)日：2006-03-02
申请号：JP2004242068
申请日：2004-08-23
申请人： Hitachi Communication Technologies Ltd , 株式会社日立コミュニケーションテクノロジー
发明人： KOSAKA JUNYA , SEKINE KENRO , MATSUOKA TADASHI
IPC分类号： H04B10/07 , H04B10/077 , H04B10/079
摘要： PROBLEM TO BE SOLVED: To provide an optical adaptor which displays a receiving state of a signal and protects an optical receiver from optical surge.
SOLUTION: The optical adapter comprises an optical coupler 18 which branches an optical signal from a receiving port 26 to a first optical signal to a variable optical attenuator 17 and a second optical signal to a driving part 16, the driving part 16 supplies drive current to the variable optical attenuator 17 for at least predetermined time when it detects that an optical level of the second optical signal is larger than a predetermined value and the variable optical attenuator 17 stops transmission of the first optical signal to an optical network device while the drive current is supplied from the driving part. An LED 22 is lit or blinks to display abnormality when the optical level is abnormal.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种显示信号的接收状态并保护光接收机免受光波动的光学适配器。解决方案：光学适配器包括光耦合器18，其将来自接收端口26的光信号分支到第一光信号到可变光衰减器17，并将第二光信号分支到驱动部分16，驱动部分16提供驱动电流至可变光衰减器17至少预定时间，当其检测到第二光信号的光电平大于预定值时，可变光衰减器17停止将第一光信号传输到光网络设备，同时从驱动部提供驱动电流。当光学水平异常时，LED 22点亮或闪烁以显示异常。版权所有（C）2006，JPO＆NCIPI

9. 发明专利

JP2005286721A Optical wavelength add drop apparatus 有权
标题翻译：光学波长增加装置
公开(公告)号：JP2005286721A
公开(公告)日：2005-10-13
申请号：JP2004098258
申请日：2004-03-30
申请人： Hitachi Communication Technologies Ltd , 株式会社日立コミュニケーションテクノロジー
发明人： KIKUCHI NOBUHIKO , SEKINE KENRO , SASAKI SHINYA
IPC分类号： H04J14/00 , G02B6/00 , H04B10/27 , H04B10/29 , H04B10/291 , H04J14/02 , H04B10/02
CPC分类号： H04J14/021 , H04J14/0212 , H04J14/0221 , H04J14/0227
摘要： PROBLEM TO BE SOLVED: To solve the problem of a conventional optical wavelength add drop apparatus that cannot detect a wavelength mistake of add light or causes a fault due to wavelength mistake of the add light.
SOLUTION: Part of the received add light 118 is reflected in a reflecting mirror 117, made incident onto an optical wavelength multiplexer 105 from a reverse direction and returned to paths 115-1 to 115-16 in response to wavelengths λ1 to λ16. When the wavelength of the add light is correct (λ16 in Figure), since an optical signal is made incident onto a corresponding reverse direction photodetector 113-16, the propriety of the wavelength of the add light can be confirmed.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了解决常规的光波长添加装置的问题，其不能检测到添加光的波长错误或由于添加光的波长失误导致的故障。解决方案：接收到的附加光118的一部分被反射在反射镜117中，从反方向入射到光学波长多路复用器105上，并响应于波长λ1至λ16返回到路径115-1至115-16 。当加法光的波长是正确的（图中的λ16）时，由于光信号被入射到相应的反向光电检测器113-16上，因此可以确认添加光的波长的适当性。版权所有（C）2006，JPO＆NCIPI

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