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81. 发明授权

US08131152B2 Optical add/drop multiplexer 有权
标题翻译：光分插复用器
公开(公告)号：US08131152B2
公开(公告)日：2012-03-06
申请号：US12910497
申请日：2010-10-22
申请人： Yuichi Akiyama , Takafumi Terahara , Hiroki Ooi , Jens C. Rasmussen , Akira Miura , Akihiko Isomura
发明人： Yuichi Akiyama , Takafumi Terahara , Hiroki Ooi , Jens C. Rasmussen , Akira Miura , Akihiko Isomura
IPC分类号： H04B10/00
CPC分类号： H04Q11/0005 , H04J14/0204 , H04J14/0205 , H04J14/0206 , H04J14/0208 , H04J14/0209 , H04J14/0212 , H04J14/0213 , H04J14/0217 , H04J14/0219 , H04J14/022 , H04J14/0221 , H04Q2011/0009 , H04Q2011/0016 , H04Q2011/0032 , H04Q2011/0039 , H04Q2011/0075 , H04Q2011/0083
摘要： An optical add/drop multiplexer includes a first optical coupler receiving an optical signal including a plurality of multiplexed wavelengths, a wavelength blocker receiving the optical signal from the first optical coupler, and blocking at least one wavelength of the plurality of multiplexed wavelengths, a first wavelength selective switch, having one input port receiving the outputted optical signal from the first optical coupler and a plurality of output ports, demultiplexing a plurality of arbitrarily selected multiplexed wavelengths from the received optical signal, a second wavelength selective switch, having a plurality of input ports, each input port receiving a different optical signal and one output port, multiplexing a plurality of arbitrarily selected wavelength signals on the plurality of input ports, and a second optical coupler receiving the optical signal output from the wavelength blocker and multiplexed wavelength signal from the second wavelength selective switch.
摘要翻译：光分插复用器包括接收包括多个复用波长的光信号的第一光耦合器，接收来自第一光耦合器的光信号的波长阻挡器，以及阻挡多个复用波长的至少一个波长;第一波长选择开关，具有从所述第一光耦合器接收输出的光信号的一个输入端口和多个输出端口，从所接收的光信号中解复用多个任意选择的复用波长;第二波长选择开关，具有多个输入端口，每个输入端口接收不同的光信号和一个输出端口，在多个输入端口上复用多个任意选择的波长信号，以及接收从波长阻挡器输出的光信号的第二光耦合器和来自第二波长选择开关。

82. 发明授权

US07853148B2 Optical add/drop multiplexer 有权
标题翻译：光分插复用器
公开(公告)号：US07853148B2
公开(公告)日：2010-12-14
申请号：US12371278
申请日：2009-02-13
申请人： Yuichi Akiyama , Takafumi Terahara , Hiroki Ooi , Jens C. Rasmussen , Akira Miura , Akihiko Isomura
发明人： Yuichi Akiyama , Takafumi Terahara , Hiroki Ooi , Jens C. Rasmussen , Akira Miura , Akihiko Isomura
IPC分类号： H04B10/00
CPC分类号： H04Q11/0005 , H04J14/0204 , H04J14/0205 , H04J14/0206 , H04J14/0208 , H04J14/0209 , H04J14/0212 , H04J14/0213 , H04J14/0217 , H04J14/0219 , H04J14/022 , H04J14/0221 , H04Q2011/0009 , H04Q2011/0016 , H04Q2011/0032 , H04Q2011/0039 , H04Q2011/0075 , H04Q2011/0083
摘要： An optical add/drop multiplexer includes a first optical coupler receiving an optical signal including a plurality of multiplexed wavelengths, a wavelength blocker receiving the optical signal from the first optical coupler, and blocking at least one wavelength of the plurality of multiplexed wavelengths, a first wavelength selective switch, having one input port receiving the outputted optical signal from the first optical coupler and a plurality of output ports, demultiplexing a plurality of arbitrarily selected multiplexed wavelengths from the received optical signal, a second wavelength selective switch, having a plurality of input ports, each input port receiving a different optical signal and one output port, multiplexing a plurality of arbitrarily selected wavelength signals on the plurality of input ports, and a second optical coupler receiving the optical signal output from the wavelength blocker and multiplexed wavelength signal from the second wavelength selective switch.
摘要翻译：光分插复用器包括接收包括多个复用波长的光信号的第一光耦合器，接收来自第一光耦合器的光信号的波长阻挡器，以及阻挡多个复用波长的至少一个波长;第一波长选择开关，具有从所述第一光耦合器接收输出的光信号的一个输入端口和多个输出端口，从所接收的光信号中解复用多个任意选择的复用波长;第二波长选择开关，具有多个输入端口，每个输入端口接收不同的光信号和一个输出端口，在多个输入端口上复用多个任意选择的波长信号，以及接收从波长阻挡器输出的光信号的第二光耦合器和来自第二波长选择开关。

83. 发明授权

US07233742B2 Optical communication system, method for supplying pump light, and distributed Raman amplifying apparatus 有权
标题翻译：光通信系统，泵浦光供给方法和分布式拉曼放大装置
公开(公告)号：US07233742B2
公开(公告)日：2007-06-19
申请号：US10021079
申请日：2001-12-19
申请人： Takeshi Hoshida , Takafumi Terahara
发明人： Takeshi Hoshida , Takafumi Terahara
IPC分类号： H04J14/02
CPC分类号： H04B10/2935 , H04B10/2916
摘要： An optical communication system according to the invention comprises: a transmitting station 11; an optical transmission line 12 for transmitting an optical signal sent from the transmitting station 11; a receiving station 13 for receiving the optical signal outputted from the optical transmission line 12; a repeater station 14 provided at one point or more in the optical transmission line 12; and pump light sources 21 provided in at least two of the stations 11, 13, 14, for supplying pump light to the optical transmission line 12, wherein the pump light has two types or more of wavelength. It is possible to obtain a substantially flat gain as a function of wavelength in the whole optical communication system since the pump lights with different wavelengths are supplied from a plurality of points in the optical transmission line 12 and an optical signal is amplified with various Raman gain coefficients.
摘要翻译：根据本发明的光通信系统包括：发送站11; 用于发送从发送站11发送的光信号的光传输线路12; 接收站13，用于接收从光传输线路12输出的光信号; 设置在光传输线路12中的一点以上的中继站14; 以及设置在站11,13,14中的至少两个站中的泵浦光源21，用于向光传输线12供应泵浦光，其中泵浦光具有两种或更多种波长。由于具有不同波长的泵浦光由光传输线路12中的多个点提供，所以可以在整个光通信系统中获得作为波长的函数的基本上平坦的增益，并且光信号用各种拉曼增益放大系数。

84. 发明申请

US20060193554A1 Optical transmission system 有权
标题翻译：光传输系统
公开(公告)号：US20060193554A1
公开(公告)日：2006-08-31
申请号：US11362704
申请日：2006-02-28
申请人： Hiroki Ooi , Akira Miura , Takafumi Terahara , Ichiro Nakajima
发明人： Hiroki Ooi , Akira Miura , Takafumi Terahara , Ichiro Nakajima
IPC分类号： G02B6/28
CPC分类号： H04J14/0201 , H04B10/25133
摘要： An optical transmission system includes a first/second node with a first/second dispersion compensator that performs a first/second dispersion compensation on an optical signal; and a third node that is arranged between the first/second nodes. The amounts of the first/second dispersion compensations are determined so that a cumulative dispersion of the optical signal after the second dispersion compensation is within a predetermined range.
摘要翻译：光传输系统包括具有第一/第二色散补偿器的第一/第二节点，其在光信号上执行第一/第二色散补偿; 以及布置在所述第一/第二节点之间的第三节点。确定第一/第二色散补偿的量，使得第二色散补偿之后的光信号的累积色散在预定范围内。

85. 发明申请

US20060140625A1 Optical node and optical add/drop multiplexer 有权
标题翻译：光节点和光分插复用器
公开(公告)号：US20060140625A1
公开(公告)日：2006-06-29
申请号：US11316941
申请日：2005-12-27
申请人： Hiroki Ooi , Takafumi Terahara , Jens Rasmussen , Akira Miura , Akihiko Isomura , Yuichi Akiyama
发明人： Hiroki Ooi , Takafumi Terahara , Jens Rasmussen , Akira Miura , Akihiko Isomura , Yuichi Akiyama
IPC分类号： H04B10/08
CPC分类号： H04J14/0294 , H04B10/032 , H04J14/0209 , H04J14/0212 , H04J14/0213 , H04J14/0217 , H04J14/022 , H04J14/0227 , H04J14/0241 , H04J14/0283 , H04J14/0284 , H04J14/0286 , H04J14/0295
摘要： The optical node connects N networks to each other (where N is an integer larger than one). Each of the N networks respectively includes a first transmission path and a second transmission path. The optical node includes a switching unit that connects the first transmission path of one network of the N networks to other (N-1) networks; a failure detector that detects failure in the first transmission path of the network; and a control unit that causes the switching unit to connect the second transmission path of the network to the other (N-1) networks when the failure is detected.
摘要翻译：光节点将N个网络相互连接（其中N是大于1的整数）。 N个网络中的每一个分别包括第一传输路径和第二传输路径。光节点包括将N个网络的一个网络的第一传输路径连接到其他（N-1）个网络的交换单元; 检测网络的第一传输路径中的故障的故障检测器; 以及控制单元，当检测到故障时，使得切换单元将网络的第二传输路径连接到另一（N-1）网络。

86. 发明授权

US06885499B1 Optical amplifying apparatus for amplifying wide-wavelength-band light, optical sending apparatus, optical transmission system, and optical amplifying method 失效
标题翻译：用于放大宽波段带光的光放大装置，光发送装置，光传输系统和光放大方法
公开(公告)号：US06885499B1
公开(公告)日：2005-04-26
申请号：US09635431
申请日：2000-08-10
申请人： Takeshi Hoshida , Takafumi Terahara
发明人： Takeshi Hoshida , Takafumi Terahara
IPC分类号： H01S3/10 , H01S3/06 , H01S3/067 , H01S3/30 , H04B3/04 , H04B10/07 , H04B10/29 , H04B10/294 , H04J14/00 , H04J14/02 , H01S3/00
CPC分类号： H04B10/2942 , H04B2210/258 , H04J14/0221
摘要： There are provided a plurality of optical adjusting sections, a wavelength-multiplexing section, and a control section. The plurality of optical adjusting sections, which are provided for respective wavelength bands, amplifies light beams in the respective wavelength bands. The wavelength-multiplexing section wavelength-multiplexes amplified light beams in the respective wavelength bands. The control section controls the outputs of the respective optical amplifying sections so that optical powers of the respective wavelength bands will become approximately identical at a predetermined point when wavelength-multiplexed light of the light beams in the respective wavelength bands travels to the predetermined point. This configuration makes it possible to eliminate optical power deviations between wavelength bands that would otherwise occur when an optical signal of a plurality of wavelength bands is transmitted, and to thereby make optical SNRs uniform.
摘要翻译：提供了多个光学调整部分，波长多路复用部分和控制部分。为各波长带设置的多个光学调整部放大各波长带的光束。波长多路复用部分波长复用各波长带中的放大光束。控制部分控制各个光放大部分的输出，使得各个波长带中的光束的波分复用光行进到预定点时各个波长带的光功率将在预定点变得大致相同。这种结构使得可以消除当发射多个波长带的光信号时将发生的波长带之间的光功率偏差，从而使光SNR均匀。

87. 发明授权

US06816683B2 Wavelength division multiplexing communications network supervisory system 有权
标题翻译：波分复用通信网络监控系统
公开(公告)号：US06816683B2
公开(公告)日：2004-11-09
申请号：US10214581
申请日：2002-08-09
申请人： Takafumi Terahara , Takeo Osaka , Shin-ichirou Harasawa
发明人： Takafumi Terahara , Takeo Osaka , Shin-ichirou Harasawa
IPC分类号： H04B1016
CPC分类号： H04B10/2918 , H04B10/035 , H04B10/071 , H04B10/0775 , H04B10/0777 , H04B2210/074 , H04B2210/078 , H04J14/0201 , H04J14/0209 , H04J14/0217 , H04J14/0227 , H04J14/0241 , H04J14/0245 , H04J14/0249 , H04J14/0279 , H04J14/028 , H04J14/0283 , H04Q11/0001
摘要： A supervisory system in a wavelength division multiplexing communications network is provided with a first and a second terminal stations and a repeater unit. The first terminal station transmits a supervisory signal to the second terminal station. The second terminal station transfers the supervisory signal to the repeater unit to be monitored. Paths to a hub station A and a hub station B can be a single path by looping back a supervisory signal output from the hub stations A and B for issuing and terminating the supervisory signal at a first and a second branch stations connected through an optical wavelength multiplexing/demultiplexing unit. If the hub station B loops back a supervisory signal, the supervisory signal output from the hub station A can be returned to the hub station A again after circulating the path. If the path of the supervisory signal is set to allow the signal to pass through all repeater units, only one channel is required for a supervisory signal without lowering the modulation rate during a branching operation, and the repeater unit can receive a supervisory signal without fail.

88. 发明授权

US06580551B2 Method for gain equalization, and device and system for use in carrying out the method 有权
标题翻译：增益均衡方法，以及用于执行该方法的装置和系统
公开(公告)号：US06580551B2
公开(公告)日：2003-06-17
申请号：US10005156
申请日：2001-12-07
申请人： Takafumi Terahara
发明人： Takafumi Terahara
IPC分类号： H01S300
CPC分类号： H04B10/2941 , H01S3/10023 , H04B10/2935 , H04B2210/258 , H04J14/0221
摘要： The present invention relates to a method for gain equalization, for example. First, an optical transmission line including an optical amplifier having a gain changing nonlinearly with wavelength is provided (step (a)). Secondly, gain equalization of the optical transmission line is performed so as to obtain a gain changing substantially linearly with wavelength (step (b)). Finally, gain equalization of the optical transmission line is performed so as to obtain a gain remaining substantially unchanged with wavelength (step (c)). According to this method, gain equalization of the optical transmission line is performed so as to obtain a gain remaining substantially unchanged with wavelength after the step (b) of performing gain equalization so as to obtain a gain changing substantially linearly with wavelength. Accordingly, variations in equalization error due to changes in system condition can be easily suppressed.
摘要翻译：本发明涉及一种增益均衡的方法。首先，提供包括具有波长非线性变化的光放大器的光传输线（步骤（a））。其次，进行光传输线的增益均衡，以获得基本上与波长线性变化的增益（步骤（b）））。最后，进行光传输线的增益均衡，以获得与波长保持大致不变的增益（步骤（c）））。根据该方法，进行光传输线路的增益均衡，以便在执行增益均衡的步骤（b）之后获得与波长保持大致不变的增益，以获得基本上与波长线性变化的增益。因此，可以容易地抑制由于系统状态的变化引起的均衡误差的变化。

89. 发明授权

US06381064B1 Method for gain equalization, and device and system for use in carrying out the method 有权
标题翻译：增益均衡方法，以及用于执行该方法的装置和系统
公开(公告)号：US06381064B1
公开(公告)日：2002-04-30
申请号：US09656237
申请日：2000-09-06
申请人： Takafumi Terahara
发明人： Takafumi Terahara
IPC分类号： H01S300
CPC分类号： H04B10/2941 , H01S3/10023 , H04B10/2935 , H04B2210/258 , H04J14/0221
摘要： The present invention relates to a method for gain equalization, for example. First, an optical transmission line including an optical amplifier having a gain changing nonlinearly with wavelength is provided(step (a)). Secondly, gain equalization of the optical transmission line is performed so as to obtain a gain changing substantially linearly with wavelength (step (b)). Finally, gain equalization of the optical transmission line is performed so as to obtain a gain remaining substantially unchanged with wavelength (step (c)). According to this method, gain equalization of the optical transmission line is performed so as to obtain a gain remaining substantially unchanged with wavelength after the step (b) of performing gain equalization so as to obtain a gain changing substantially linearly with wavelength. Accordingly, variations in equalization error due to changes in system condition can be easily suppressed.
摘要翻译：本发明涉及一种增益均衡的方法。首先，提供包括具有波长非线性变化的光放大器的光传输线（步骤（a））。其次，进行光传输线的增益均衡，以获得基本上与波长线性变化的增益（步骤（b）））。最后，进行光传输线的增益均衡，以获得与波长保持大致不变的增益（步骤（c）））。根据该方法，进行光传输线路的增益均衡，以便在执行增益均衡的步骤（b）之后获得与波长保持大致不变的增益，以获得基本上与波长线性变化的增益。因此，可以容易地抑制由于系统状态的变化引起的均衡误差的变化。

90. 发明授权

US06366379B1 REMOTE CONTROL DEVICE OF ACOUSTO-OPTIC TUNABLE FILTER AND OPTICAL TRANSMISSION SYSTEM CONTAINING EQUALIZER USING ACOUSTO-OPTIC TUNABLE FILTER AND OPTICAL TRANSMISSION SYSTEM CONTAINING OPTICAL ADD/DROP MULTIPLEXER USING ACOUSTO-OPTIC TUNABLE FILTER 失效
标题翻译：使用ACOUSTO-OPTIC TUNABLE FILTER的光学透镜滤光器和包含光学传输系统的光学传输系统的远程控制设备和包含光学加/多路复用器的光传输系统使用ACOUSTO-OPTIC TUNABLE FILTER
公开(公告)号：US06366379B1
公开(公告)日：2002-04-02
申请号：US09087497
申请日：1998-05-29
申请人： Takafumi Terahara , Terumi Chikama
发明人： Takafumi Terahara , Terumi Chikama
IPC分类号： H04B1000
CPC分类号： H04J14/021 , H04B10/077 , H04B10/07955 , H04J14/02 , H04J14/0206 , H04J14/0212 , H04J14/0213
摘要： A remote control device of an acousto-optic tunable filter includes an acousto-optic tunable filter, a surface acoustic wave control signal source and a control unit. The acousto-optic tunable filter receives an output light signals from an optical transmission line and has a control port to control and outputs state of the light signal received from the optical transmission line, based on a surface acoustic wave control signal received through the control port. The surface acoustic wave control signal source generates the surface acoustic wave control signal and is provided at a remote place from the acousto-optic tunable filter. The control unit receives information regarding the surface acoustic wave control signal generated by the surface acoustic wave control signal source and supplies the surface acoustic wave control signal to the control port of the acousto-optic tunable filter.
摘要翻译：声光可调谐滤波器的遥控装置包括声光可调谐滤波器，声表面波控制信号源和控制单元。声光可调谐滤波器接收来自光传输线的输出光信号，并且具有控制端口，用于基于通过控制端口接收的表面声波控制信号来控制和输出从光传输线接收的光信号的状态。表面声波控制信号源产生声表面波控制信号，并且设置在距离声光可调滤波器的远处。控制单元接收由声表面波控制信号源产生的表面声波控制信号的信息，并将声表面波控制信号提供给声光调节滤波器的控制端口。

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