公开(公告)号：US06947630B2

公开(公告)日：2005-09-20

申请号：US10284299

申请日：2002-10-31

申请人： Yutaka Kai ,  Hideyuki Miyata ,  Isao Tsuyama

发明人： Yutaka Kai ,  Hideyuki Miyata ,  Isao Tsuyama

IPC分类号： G02B5/18 ,  G02B6/12 ,  G02B6/34 ,  G02F1/01 ,  H04B10/07 ,  H04B10/27 ,  H04B10/29 ,  H04B10/291 ,  H04J14/02 ,  G02B6/28

CPC分类号： G02B6/29395 ,  G02B6/12007 ,  G02F1/0121 ,  G02F2203/585 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/021 ,  H04J14/0213

摘要： The present invention has an object to provide a control method and a control apparatus for a variable wavelength optical filter, which can reliably and stably control drive conditions of the variable wavelength optical filter, independent of the number of wavelengths to be selectively separated in collective. To this end, the control apparatus for a variable wavelength optical filter according to the present invention comprises: a light reception section that takes out to receive, in collective, monitor light corresponding to each optical signal selectively separated by the variable wavelength optical filter, and creates a monitor signal a level of which is changed corresponding to the power of the received monitor light; an alternating current component extraction section that extracts an alternating current component of the monitor signal generated by the light reception section; and a tracking control section that controls the drive condition of the variable wavelength optical filter based on a level change in the alternating current component extracted by the alternating current component extraction section.

摘要翻译： 本发明的目的是提供一种用于可变波长滤光器的控制方法和控制装置，其可以可靠且稳定地控制可变波长光学滤波器的驱动条件，而与集体中选择性分离的波长数无关。 为此，根据本发明的可变波长光学滤波器的控制装置包括：光接收部分，其集中地监视与由可变波长滤光器选择性分离的每个光信号相对应的光，以及 创建一个监视信号，其电平根据所接收的监视光的功率而改变; 交流分量提取部，其提取由所述受光部生成的所述监视信号的交流分量; 以及跟踪控制部分，其基于由交流分量提取部分提取的交流分量的电平变化来控制可变波长光学滤波器的驱动条件。

公开(公告)号：US07120321B2

公开(公告)日：2006-10-10

申请号：US10265767

申请日：2002-10-08

申请人： Hideyuki Miyata ,  Yutaka Kai ,  Isao Tsuyama

发明人： Hideyuki Miyata ,  Yutaka Kai ,  Isao Tsuyama

IPC分类号： G02F1/335

CPC分类号： G02F1/116 ,  G02F2201/16 ,  G02F2203/585

摘要： The present invention relates to a control method and device for an optical filter, and a primary object of the present invention is to achieve accurate tracking control of the optical filter. Disclosed herein is a control method for an optical filter including first and second optical filter units cascaded, each having an input and first and second outputs. The first output of the first optical filter unit is connected to the input of the second optical filter unit. First light output from the second output of the first optical filter unit is converted into a first electrical signal having a level corresponding to the power of the first light, and second light output from the second output of the second optical filter unit is converted into a second electrical signal having a level corresponding to the power of the second light. A control signal is generated according to the first and second electrical signals. Then, the first and second optical filter units are controlled according to the control signal. According to this method, accurate tracking control of the optical filter can be achieved.

公开(公告)号：US06895141B2

公开(公告)日：2005-05-17

申请号：US10265794

申请日：2002-10-08

申请人： Hideyuki Miyata ,  Yutaka Kai ,  Isao Tsuyama

发明人： Hideyuki Miyata ,  Yutaka Kai ,  Isao Tsuyama

IPC分类号： G02F1/125 ,  G02F1/335 ,  H04B10/07 ,  H04B10/27 ,  H04B10/29 ,  H04B10/291 ,  H04B10/293 ,  H04B10/564 ,  H04B10/572 ,  H04J14/00 ,  H04J14/02 ,  G02B6/28

CPC分类号： H04J14/0221 ,  H04B10/25073 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/021 ,  H04J14/0213

摘要： In the control method for the optical filter according to the present invention, WDM signal light obtained by wavelength division multiplexing a plurality of optical signals having different wavelengths is supplied to an optical filter to obtain output WDM signal light including a part of the plurality of optical signals. The output WDM signal light is converted into an electrical signal per wavelength channel of the output WDM signal light. Then, the optical filter is controlled according to the electrical signal so that the characteristic of the optical filter becomes stable.

摘要翻译： 在根据本发明的滤光器的控制方法中，通过将具有不同波长的多个光信号进行波分复用获得的WDM信号光提供给滤光器，以获得包括多个光学部分的一部分的输出WDM信号光 信号。 输出WDM信号光被转换成输出WDM信号光的每个波长信道的电信号。 然后，根据电信号控制滤光器，使得滤光器的特性变得稳定。

公开(公告)号：US06404940B1

公开(公告)日：2002-06-11

申请号：US09558553

申请日：2000-04-25

申请人： Isao Tsuyama ,  Ichiro Nakajima ,  Satoshi Kuroyanagi

发明人： Isao Tsuyama ,  Ichiro Nakajima ,  Satoshi Kuroyanagi

IPC分类号： G02B635

CPC分类号： H04Q11/0005 ,  H04Q2011/0009 ,  H04Q2011/0011 ,  H04Q2011/0016 ,  H04Q2011/0024 ,  H04Q2011/0047 ,  H04Q2011/0049

摘要： In an optical cross connect apparatus, an optical multiplexing/distributing section wavelength-multiplexes optical signals of wavelengths after routing by an optical input switch section and distributively outputs the resultant multiplexed optical signal as input optical signals to an optical output switch section. In addition, an optical wavelength selecting section conducts wavelength selection processing so that, of the resultant multiplexed optical signal, an optical signal of a desired wavelength is outputted to an output port. With this configuration, it is possible to economically offer an optical cross connect apparatus having an excellent extensibility on a change (particularly, an increase) of the number of wavelengths to be accommodated per port.

摘要翻译： 在光交叉连接装置中，光复用/分配部通过光输入开关部对路由后的波长的光信号进行波分复用，并将所生成的复用光信号作为输入光信号分配输出到光输出开关部。 此外，光波长选择部分进行波长选择处理，使得所得到的复用光信号中所需波长的光信号被输出到输出端口。 利用这种配置，可以经济地提供一种在每个端口容纳的波长数量的变化（特别是增加）上具有优异的可扩展性的光学交叉连接装置。

公开(公告)号：US20090108926A1

公开(公告)日：2009-04-30

申请号：US12259119

申请日：2008-10-27

申请人： Isao Tsuyama

发明人： Isao Tsuyama

IPC分类号： H03K5/00

CPC分类号： G11B20/10009 ,  G11B20/10046 ,  G11B2220/2516 ,  H03H11/0466 ,  H03K5/01

摘要： One aspect of the embodiments utilizes a filter circuit which can be connected to a signal source has a low-frequency cutoff of 1/(R×C). The filter includes a buffer circuit which can be connected to an output end of the signal source and has an output impedance of R, and a capacitor which is connected to an output end of the buffer circuit in a floating state and has a capacitance of C/2. The filter includes a resistor circuit which is connected to an output end of the capacitor and has a resistance value of R.

摘要翻译： 实施例的一个方面利用可连接到信号源的滤波器电路具有1 /（RxC）的低频截止值。 该滤波器包括可连接到信号源的输出端并具有R的输出阻抗的缓冲电路，以及以浮置状态连接到缓冲电路的输出端并具有C的电容的电容器 / 2。 滤波器包括连接到电容器的输出端并具有电阻值R的电阻器电路。

公开(公告)号：US20050111788A1

公开(公告)日：2005-05-26

申请号：US10807256

申请日：2004-03-24

申请人： Isao Tsuyama

发明人： Isao Tsuyama

IPC分类号： H04B10/00 ,  H04B10/07 ,  H04B10/079 ,  H04B10/296 ,  H04B10/297 ,  H04J14/00 ,  H04J14/02 ,  G02B6/26 ,  G02B6/28 ,  G02B6/42

CPC分类号： H04J14/0226 ,  H04B10/40 ,  H04J14/02 ,  H04J14/0208 ,  H04J14/0213 ,  H04J14/0216 ,  H04J14/0217 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0283

摘要： The present invention is directed to provide a small sized optical apparatus, with low cost and low loss, by realizing a simple structure optimum to bidirectional optical communication. To this end, the present invention comprises three optical multiplexing/demultiplexing sections, in order to make a transmitted light and a received light transmitted bidirectionally in the same transmission path fiber into the light in a single direction, to give these to a single optical processing section (34). The first optical multiplexing/demultiplexing section (31) is connected with a transmission path fiber (2) at a multiplexing side port thereof. The second optical multiplexing/demultiplexing section (32) is connected with an optical output port of an optical transmission section at a demultiplexing side port corresponding to the transmitted light, connected with a demultiplexing side port corresponding to the received light of the first optical multiplexing/demultiplexing section (31) at a demultiplexing side port thereof corresponding to the received light, and connected with an optical input port of an optical processing section (34) at a combined side port thereof. In the third optical multiplexing/demultiplexing section (33) is connected with an optical output port of the optical processing section (34) at a combined side port thereof, connected with a demultiplexing side port corresponding to the transmitted light of the first optical multiplexing/demultiplexing section (31) at a demultiplexing side port thereof corresponding to the transmitted light, and connected with an optical input port of an optical reception section at a demultiplexing side port thereof corresponding to the received light.

摘要翻译： 本发明旨在通过实现双向光通信最优的简单结构来提供一种成本低廉的小型光学设备。 为此，本发明包括三个光复用/解复用部分，以使透射光和接收光在同一传输路径光纤中双向传输到单个方向的光中，从而将它们提供给单个光学处理 （34）。 第一光复用/解复用部分（31）在其复用侧端口与传输路径光纤（2）连接。 第二光复用/解复用部分（32）与对应于透射光的解复用侧端口的光传输部分的光输出端口连接，与与第一光复用/解复用部分的接收光相对应的解复用侧端口连接， 解复用部分（31）在与其接收的光相对应的解复用侧端口处，并与光学处理部分（34）的组合侧端口的光输入端口相连。 在第三光复用/解复用部分（33）中，与光处理部分（34）的光输出端口在其组合侧端口相连，与第一光复用/解复用部分的发射光相对应的解复用侧端口， 在与解复用侧端口对应的发射光的解复用部分（31）中，并与光接收部分的光接收部分的光输入端口相连接。

公开(公告)号：US06433900B1

公开(公告)日：2002-08-13

申请号：US09229863

申请日：1999-03-01

申请人： Satoshi Kuroyanagi ,  Tetsuya Nishi ,  Ichiro Nakajima ,  Takuji Maeda ,  Isao Tsuyama

发明人： Satoshi Kuroyanagi ,  Tetsuya Nishi ,  Ichiro Nakajima ,  Takuji Maeda ,  Isao Tsuyama

IPC分类号： H04B1008

CPC分类号： H04Q11/0062 ,  H04J14/0279 ,  H04J14/0297 ,  H04Q2011/0016 ,  H04Q2011/0043 ,  H04Q2011/0081 ,  H04Q2011/0083

摘要： A protection switch comprising a demultiplexer, optical selector, a multiplexer, and a monitor circuit is provided on the input side and the output side of an optical XC node. The demultiplexer demultiplexes the wavelength-multiplexed optical signals of a 0-system and a 1-system, and transmits these optical signals to the optical selectors which are provided for the respective wavelengths. The optical selectors are controlled by the monitor circuit, and switch the optical signal of one system to that of the other system when a fault occurs. The optical signals of the respective wavelengths outputted from the optical selectors are multiplexed by a multiplexer to be transmitted. The demultiplexer and the multiplexer can be differently arranged depending on the configuration of a transmission line or the optical XC node. Further, a multi-wavelength selection filter such as an acousto-optical filter or the like can be used as a protection switch.

摘要翻译： 在光学XC节点的输入侧和输出侧设置包括解复用器，光选择器，复用器和监视电路的保护开关。 解复用器对0系统和1系统的波分复用光信号进行解复用，并将这些光信号发送到为各波长提供的光选择器。 光电选择器由监控电路控制，当发生故障时，将一个系统的光信号切换到另一个系统的光信号。 从光学选择器输出的各个波长的光信号由复用器复用以被发送。 取决于传输线或光学XC节点的配置，解复用器和多路复用器可以被不同地布置。 此外，可以使用诸如声光滤波器等的多波长选择滤波器作为保护开关。

公开(公告)号：US20100091623A1

公开(公告)日：2010-04-15

申请号：US12560992

申请日：2009-09-16

申请人： Isao Tsuyama

发明人： Isao Tsuyama

IPC分类号： G11B20/00 ,  H04L27/06 ,  H03B19/00

CPC分类号： H04L25/0292 ,  H03F3/45197 ,  H03F3/45475 ,  H03F2203/45138 ,  H03F2203/45492 ,  H04L25/03159 ,  H04L25/03878

摘要： According to one embodiment, a frequency characteristic adjusting circuit includes a cutoff range adjusting module and a control signal inputting module. The cutoff range adjusting module is connected to an AC coupling circuit capacitively coupled with a signal transmission path, and allows an output signal from the AC coupling circuit to pass through such that a low cutoff range in the frequency characteristic of the AC coupling circuit varies. The control signal inputting module receives a control signal to control a zero-point frequency based on a numerator polynomial of a transfer function of the cutoff range adjusting module and a pole frequency based on a denominator polynomial of the transfer function. The numerator polynomial is equalized to a denominator polynomial of a transfer function of the AC coupling circuit by the control signal. A cutoff frequency is determined by the pole frequency according to the control signal.

摘要翻译： 根据一个实施例，频率特性调整电路包括截止范围调整模块和控制信号输入模块。 截止范围调节模块连接到与信号传输路径电容耦合的AC耦合电路，并且允许来自AC耦合电路的输出信号通过，使得AC耦合电路的频率特性中的低截止范围变化。 控制信号输入模块基于截止范围调整模块的传递函数的分子多项式和基于传递函数的分母多项式的极点频率接收控制信号以控制零点频率。 分子多项式通过控制信号与AC耦合电路的传递函数的分母多项式相等。 截止频率由根据控制信号的极点频率决定。

公开(公告)号：US20090309649A1

公开(公告)日：2009-12-17

申请号：US12410264

申请日：2009-03-24

申请人： Isao Tsuyama

发明人： Isao Tsuyama

IPC分类号： H04B1/10

CPC分类号： H03H11/1252 ,  H03H11/1291

摘要： An active band-pass filter has a negative feedback circuit including a series-connection of a band-pass block, a second-order band-elimination block having a denominator polynomial equal to the band-pass block and an amplifier block which amplifies the output of the band-elimination block. The band width can be controlled independently of the frequency, adjustment is made easy, and moreover the circuit configuration can be simplified.

摘要翻译： 有源带通滤波器具有负反馈电路，该负反馈电路包括带通块的串联连接，具有等于带通块的分母多项式的二阶带除块和放大输出的放大器块 的消除块。 带宽可以独立于频率进行控制，调整变得容易，而且可以简化电路配置。

公开(公告)号：US07203392B2

公开(公告)日：2007-04-10

申请号：US10807256

申请日：2004-03-24

申请人： Isao Tsuyama

发明人： Isao Tsuyama

IPC分类号： G02B6/26 ,  G02B6/28 ,  G02B6/12

CPC分类号： H04J14/0226 ,  H04B10/40 ,  H04J14/02 ,  H04J14/0208 ,  H04J14/0213 ,  H04J14/0216 ,  H04J14/0217 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0283

摘要： The present invention is directed to provide a small sized optical apparatus, with low cost and low loss, by realizing a simple structure optimum to bidirectional optical communication. To this end, the present invention comprises three optical multiplexing/demultiplexing sections, in order to make a transmitted light and a received light transmitted bidirectionally in the same transmission path fiber into the light in a single direction, to give these to a single optical processing section (34). The first optical multiplexing/demultiplexing section (31) is connected with a transmission path fiber (2) at a multiplexing side port thereof. The second optical multiplexing/demultiplexing section (32) is connected with an optical output port of an optical transmission section at a demultiplexing side port corresponding to the transmitted light, connected with a demultiplexing side port corresponding to the received light of the first optical multiplexing/demultiplexing section (31) at a demultiplexing side port thereof corresponding to the received light, and connected with an optical input port of an optical processing section (34) at a combined side port thereof. In the third optical multiplexing/demultiplexing section (33) is connected with an optical output port of the optical processing section (34) at a combined side port thereof, connected with a demultiplexing side port corresponding to the transmitted light of the first optical multiplexing/demultiplexing section (31) at a demultiplexing side port thereof corresponding to the transmitted light, and connected with an optical input port of an optical reception section at a demultiplexing side port thereof corresponding to the received light.

摘要翻译： 本发明旨在通过实现双向光通信最优的简单结构来提供一种成本低廉的小型光学设备。 为此，本发明包括三个光复用/解复用部分，以使透射光和接收光在同一传输路径光纤中双向传输到单个方向的光中，从而将它们提供给单个光学处理 （34）。 第一光复用/解复用部分（31）在其复用侧端口与传输路径光纤（2）连接。 第二光复用/解复用部分（32）与对应于透射光的解复用侧端口的光传输部分的光输出端口连接，与与第一光复用/解复用部分的接收光相对应的解复用侧端口连接， 解复用部分（31）在与其接收的光相对应的解复用侧端口处，并与光学处理部分（34）的组合侧端口的光输入端口相连。 在第三光复用/解复用部分（33）中，与光处理部分（34）的光输出端口在其组合侧端口相连，与第一光复用/解复用部分的发射光相对应的解复用侧端口， 在与解复用侧端口对应的发射光的解复用部分（31）中，并与光接收部分的光接收部分的光输入端口相连接。