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公开(公告)号：US06334009B1
公开(公告)日：2001-12-25
申请号：US09680446
申请日：2000-10-06
IPC分类号： G02B635
CPC分类号： H04Q11/0005 , G02B6/357 , G02B6/358 , G02F1/0121 , H04Q2011/0039 , H04Q2011/0049 , H04Q2011/0083
摘要： An optical signal switching apparatus that maintains an optical switch to a specified state even when noise is generated during the turning on and/or off of power to an optical switch control unit which controls the optical switch. The optical switch control unit includes an optical switch driving unit, a power supply and a power supply surveillance unit. When a specified condition of the power supply is not satisfied, a control signal is generated by the power supply surveillance unit. Upon detection of the control signal the optical switch driving unit, fixes the state of the optical switch to a previously set state without regard to the input to the optical switch driving unit.
摘要翻译： 即使在对控制光开关的光开关控制单元的接通和/或断电时产生噪声的情况下，光信号切换装置将光开关保持在指定状态。 光开关控制单元包括光开关驱动单元，电源和电源监视单元。 当不满足电源的指定条件时，由电源监视单元产生控制信号。 当检测到控制信号时，光开关驱动单元将光开关的状态固定在预先设定的状态，而不用考虑到光开关驱动单元的输入。
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公开(公告)号：US4909584A
公开(公告)日：1990-03-20
申请号：US204551
申请日：1988-03-23
申请人： Katsuyuki Imoto , Hirohisa Sano , Hideaki Tsushima
发明人： Katsuyuki Imoto , Hirohisa Sano , Hideaki Tsushima
CPC分类号： G02B6/12007 , G02B6/125 , G02B6/2821 , G02B6/29355 , G02B6/2938 , G02B6/4246 , H04B10/2504
摘要： This invention relates to an optical multi/demultiplexer which will be useful for optical wavelength-division multiplexing communication using an optical fiber.In order to obtain high isolation, the optical multi/demultiplexer of the present invention constitutes three, mutually the same optical multi/demultiplexers by use of a main waveguide and first, second and third branch waveguides. Two rays of light having mutually different wavelenths, which are incident into the main waveguide, are isolated completely by the three optical multi/demultiplexers and are outputted.
摘要翻译： PCT No.PCT / JP87 / 00969 Sec。 371日期：1988年3月23日 102（e）1988年3月23日PCT PCT公开1987年12月11日PCT公布。 出版物WO88 / 04785 日期：1988年6月30日。本发明涉及对于使用光纤的光波分复用通信有用的光多路复用器。 为了获得高隔离度，本发明的光学多路复用/多路分离器通过使用主波导和第一，第二和第三分支波导构成三个相互相同的光学多路/多路分离器。 入射到主波导中的具有相互不同的波长的两束光线被三个光学多路/解复用器完全隔离，并被输出。
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公开(公告)号：US06341032B1
公开(公告)日：2002-01-22
申请号：US09338727
申请日：1999-06-23
IPC分类号： H01S300
CPC分类号： H04B10/2931 , H01S3/0014 , H01S3/10007
摘要： The method and system are disclosed for reducing an optical surge in an optical data communication system that includes at least pair of optical lines, optical switches and optical amplifiers to maintain high reliability in data transmission. The optical surge is substantially reduced or suppressed by assuring a proper timing of the optical switch operation based upon a predetermined elapsed time or a predetermined safe amplification gain of the optical amplifier.
摘要翻译： 公开了用于减少光数据通信系统中的光浪涌的方法和系统，其包括至少一对光线路，光开关和光放大器，以保持数据传输中的高可靠性。 通过基于光放大器的预定经过时间或预定的安全放大增益确保光开关操作的正确定时，基本上减小或抑制了光浪涌。
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公开(公告)号：US5600466A
公开(公告)日：1997-02-04
申请号：US216876
申请日：1994-03-24
CPC分类号： H04J14/0297 , H04J14/0212 , H04J14/0227 , H04J14/0232 , H04J14/0241 , H04J14/028 , H04J14/0282 , H04J14/0283 , H04J14/0289 , H04J14/08 , H04Q11/0005 , H04J14/0205 , H04J14/021 , H04J14/0291 , H04J14/0295 , H04J14/083 , H04L7/0008 , H04Q2011/0011 , H04Q2011/0015 , H04Q2011/002 , H04Q2011/0041 , H04Q2011/0043 , H04Q2011/0092
摘要： A wavelength division multiplex communications system has a head station and a plurality of terminal stations interconnected by an optical fiber cable. The head station transmits CW modulated wavelengths (.lambda.-.sub.1 -.lambda..sub.k), and a signalling wavelength (.lambda..sub.0) which is used to indicate, in each time slot, which wavelengths in the following time slot are available for transmission. Each terminal station is arranged to receive the signalling wavelength (.lambda..sub.0), to determine therefrom whether the next time slot contains any data packets for that terminal station and, if so, to receive the packets. Each terminal station is arranged, if it has a data packet to transmit, to determine from the signalling wavelength (.lambda..sub.0) whether the next time slot already contains data packets for the destination station and, if so, to avoid data collision by not transmitting its own data packet. The terminal station then determines a free wavelength (.lambda..sub.t) from the signalling wavelength (.lambda..sub.0), modulates the free wavelength with the data packet it is to transmit, and modifies the signalling wavelength.
摘要翻译： 波分复用通信系统具有通过光纤电缆互连的头站和多个终端站。 头站发射CW调制波长（λ-1-λk）和用于在每个时隙中指示下一个时隙中的哪些波长可用于传输的信令波长（λ0）。 每个终端站被设置为接收信令波长（λ0），从而确定下一个时隙是否包含用于该终端站的任何数据分组，如果是，则接收该分组。 如果每个终端具有要发送的数据包，则根据信令波长（λ0）确定下一个时隙是否已经包含目的站的数据分组，如果是，则通过不发送来避免数据冲突 自己的数据包。 终端站然后从信令波长（λ0）确定自由波长（λt），利用要发送的数据分组调制自由波长，并修改信令波长。
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公开(公告)号：US5422968A
公开(公告)日：1995-06-06
申请号：US205985
申请日：1994-03-04
IPC分类号： G02B6/12 , G02B6/293 , G02B6/34 , H01S3/06 , H01S3/067 , H01S3/10 , H04B10/2507 , H04B10/27 , H04B10/29 , H04B10/294 , H04J14/02 , G02B6/28
CPC分类号： H04B10/27 , G02B6/12007 , H04B10/272 , H04J14/02
摘要： In an optical demultiplexing system comprising a plurality of optical demultiplexers for separating the component optical signals respectively having predetermined wavelengths of an input wavelength-multiplexed optical signal, a first optical amplifier is connected to the input of the optical demultiplexer disposed at the input end of the optical demultiplexing system, and a plurality of optical amplifiers are disposed to amplify the output optical signal of the first optical amplifier before the S/N ratio of the optical signal is caused to fall by optical losses caused within the optical demultiplexing system below a predetermined S/N ratio guaranteeing a predetermined bit error rate.
摘要翻译： 在包括多个光解复用器的光解复用系统中，分离具有预定波长的输入波长多路复用光信号的分量光信号，第一光放大器连接到设置在输入波多重复用光信号的输入端的光解复用器的输入端 光解复用系统和多个光放大器被放置成放大第一光放大器的输出光信号，在光信号的S / N比由于在光解复用系统中引起的光损耗降低到低于预定S / N比保证预定的位错误率。
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公开(公告)号：US07447430B2
公开(公告)日：2008-11-04
申请号：US11184988
申请日：2005-07-20
CPC分类号： H04J14/0295 , H04J14/0227 , H04J14/0241 , H04J14/0278 , H04J14/0291 , H04Q11/0005 , H04Q2011/0043
摘要： Disclosed is an optical cross connect apparatus that is applicable to an end office node and relay node in a path. The optical cross connect apparatus includes an optical switch for generating plural optical output signals from plural optical input signals; an optical level monitor section for detecting the optical levels of the optical input signals; and a control section that is connected to the optical switch and the optical level monitor section, includes a path switching management section for retaining a path switching management table, references the path switching management table when the optical input signals detected by the optical level monitor section are found to be OFF, and judges whether the optical switch should be operated.
摘要翻译： 公开了一种可应用于路径中的终端局节点和中继节点的光交叉连接装置。 光交叉连接装置包括用于从多个光输入信号产生多个光输出信号的光开关; 用于检测光输入信号的光电平的光学电平监视器部分; 以及连接到光开关和光电平监视器部分的控制部分，包括用于保持路径切换管理表的路径切换管理部，参考由光学级监视部检测出的光输入信号时的路径切换管理表 被发现为OFF，并且判断光开关是否应该被操作。
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公开(公告)号：US07302176B2
公开(公告)日：2007-11-27
申请号：US10853864
申请日：2004-05-26
CPC分类号： H04J14/0294 , H04B10/032 , H04J14/0206 , H04J14/0209 , H04J14/0213 , H04J14/0219 , H04J14/0221 , H04J14/0227 , H04J14/0228 , H04J14/0238 , H04J14/0241 , H04J14/0283 , H04J14/0297 , H04Q11/0066 , H04Q2011/0081 , H04Q2011/0098
摘要： A medium-scale IP telecommunications network is configured in a low-cost optical network with good reliability and expandability. A physical configuration example has a center node 2-1 and eight local nodes 2-11 through 2-18 connected in one OADM ring 2-21/2-22. The logical configuration is a star configuration with the central node 2-1 at its origin with all traffic passing through the center node 2-1. The local nodes 2-11 through 2-18 are connected to the central node 2-1 by wavelength-unit optical channels or optical paths λ1 through λ8. Channels are added as required. Initially, for example, the center node 2-1 and the local node 2-5 are connected by λ5, but λ13 can added when the need arises. Since the logical star network is limited to approximately two add/drop optical channels at local nodes, costs are reduced by using inexpensive filters (e.g., dielectric interference film filters or fiber Bragg reflectors) that are capable of extracting only the specific wavelength of the optical channel. High reliability is provided through the use of optical switches for correction of fiber transmission path failures.
摘要翻译： 中等规模的IP电信网络配置在低成本的光网络中，具有良好的可靠性和可扩展性。 物理配置示例具有连接在一个OADM环2-21/2-22中的中心节点2-1和8个本地节点2-11至2-18。 逻辑配置是一个星型配置，其中心节点2-1位于其原点，所有业务通过中心节点2 - 1。 局部节点2至11至2-18通过波长单位光学信道或光学路径λ1至λ8连接到中心节点2-1。 根据需要添加渠道。 最初，例如，中心节点2-1和本地节点2-5通过λ5连接，但是当需要时可以添加lambda 13。 由于逻辑星形网络在局部节点处限制在大约两个加/减光通道，所以通过使用廉价的滤波器（例如，介质干涉膜滤波器或光纤布拉格反射器），能够仅提取光学特定波长的成本降低 渠道。 通过使用光学开关提供光纤传输路径故障的高可靠性。
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公开(公告)号：US20060018656A1
公开(公告)日：2006-01-26
申请号：US11184988
申请日：2005-07-20
IPC分类号： H04J14/00
CPC分类号： H04J14/0295 , H04J14/0227 , H04J14/0241 , H04J14/0278 , H04J14/0291 , H04Q11/0005 , H04Q2011/0043
摘要： Disclosed is an optical cross connect apparatus that is applicable to an end office node and relay node in a path. The optical cross connect apparatus includes an optical switch for generating plural optical output signals from plural optical input signals; an optical level monitor section for detecting the optical levels of the optical input signals; and a control section that is connected to the optical switch and the optical level monitor section, includes a path switching management section for retaining a path switching management table, references the path switching management table when the optical input signals detected by the optical level monitor section are found to be OFF, and judges whether the optical switch should be operated.
摘要翻译： 公开了一种可应用于路径中的终端局节点和中继节点的光交叉连接装置。 光交叉连接装置包括用于从多个光输入信号产生多个光输出信号的光开关; 用于检测光输入信号的光电平的光学电平监视器部分; 以及连接到光开关和光电平监视器部分的控制部分，包括用于保持路径切换管理表的路径切换管理部，参考由光学级监视部检测出的光输入信号时的路径切换管理表 被发现为OFF，并且判断光开关是否应该被操作。
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公开(公告)号：US06975811B1
公开(公告)日：2005-12-13
申请号：US09650506
申请日：2000-08-29
申请人： Sunao Kakizaki , Hideaki Tsushima , Takashi Mori , Masahiro Takatori , Yukio Hayashi , Shinichi Kuwano
发明人： Sunao Kakizaki , Hideaki Tsushima , Takashi Mori , Masahiro Takatori , Yukio Hayashi , Shinichi Kuwano
CPC分类号： H04Q11/0062 , H04Q2011/0043 , H04Q2011/0081
摘要： An optical one-to-one protection switching apparatus exchanges signals between a transmit node and a receive node. If a fault is detected in the first transmission line (down-stream), a controller in the node controls a drive circuit so as to shut off a gate. Then, the controller in the transmit node upon receiving a switching request from the receive node, controls the drive circuit so as to shut off the gate. Thereby, the optical switch is switched. The transmitter of the client terminal is thus connected to the second transmission line (down-stream). Upon receiving the switching request from the transmit node, the optical switch in the receive node is switched. Thereby the receiver in the client terminal is connected to the second transmission line (down-stream).
摘要翻译： 光学一对一保护倒换装置在发射节点和接收节点之间交换信号。 如果在第一传输线（下行）中检测到故障，节点中的控制器控制驱动电路以便关闭门。 然后，当从接收节点接收到切换请求时，发送节点中的控制器控制驱动电路以关闭门。 由此，切换光开关。 因此，客户终端的发射机连接到第二传输线（下行）。 在从发送节点接收到切换请求时，切换接收节点中的光开关。 因此，客户终端中的接收机连接到第二传输线（下行）。
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40.发明授权
公开(公告)号：US5140453A
公开(公告)日：1992-08-18
申请号：US166984
申请日：1988-03-11
申请人： Hideaki Tsushima , Katsuyuki Imoto , Hirohisa Sano , Akihiko Takase , Yoshitaka Takasaki , Minoru Maeda
发明人： Hideaki Tsushima , Katsuyuki Imoto , Hirohisa Sano , Akihiko Takase , Yoshitaka Takasaki , Minoru Maeda
IPC分类号： H04B10/148
CPC分类号： H04B10/61 , H04B10/614 , H04B10/64
摘要： An optical receiving method utilizing polarization diversity is disclosed in which first and second reference lightwaves having different frequencies and having polarization planes substantially perpendicular to each other, are combined with a signal lightwave to form a combined lightwave. The combined lightwave is subjected to heterodyne detection to obtain a detection signal and the detection signal is separated into first and second intermediate-frequency signals having different carrier frequencies. The first and second intermediate-frequency signals are converted into first and second baseband signals, respectively, and the first and second baseband signals are added to obtain an output signal.
摘要翻译： 公开了一种利用极化分集的光接收方法，其中具有不同频率的第一和第二参考光波具有彼此基本垂直的偏振面，与信号光波组合以形成组合的光波。 对组合的光波进行外差检测以获得检测信号，并将检测信号分离成具有不同载波频率的第一和第二中频信号。 第一和第二中频信号分别转换为第一和第二基带信号，并且相加第一和第二基带信号以获得输出信号。
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