公开(公告)号：US08787710B2

公开(公告)日：2014-07-22

申请号：US13321780

申请日：2010-06-02

申请人： Takayuki Mizuno ,  Takashi Goh ,  Hiroshi Yamazaki ,  Shin Kamei ,  Tsutomu Kitoh

发明人： Takayuki Mizuno ,  Takashi Goh ,  Hiroshi Yamazaki ,  Shin Kamei ,  Tsutomu Kitoh

IPC分类号： G02B6/26

CPC分类号： G02B6/12007 ,  G02B6/12023

摘要： A interferometer type polarization beam combiner and splitter, which can combine or split polarized light over a wide band, is provided. The interferometer type polarization beam combiner and splitter includes: an optical splitter; an optical coupler; an optical path length difference imparting unit, which includes a plurality of optical waveguides arranged between the optical splitting unit and the optical coupling unit; one or two input/output ports connected to the optical splitter; and two input/output ports connected to the optical coupler. A half-integer of a wavelength of λc is set as a normalized phase difference, for the optical path length difference imparting unit, between two polarization states, and means for generating a difference in refractive index dispersion is provided between the optical waveguides of the optical path length difference imparting unit, so that the change rate of the transmittance with respect to wavelength is suppressed for the two polarization states.

摘要翻译： 提供了可以在宽带上组合或分离偏振光的干涉仪型偏振光束组合器和分离器。 干涉仪型偏振光束组合器和分离器包括：光分路器; 光耦合器; 光路长度差分赋予单元，其包括布置在光分离单元和光耦合单元之间的多个光波导; 连接到光分路器的一个或两个输入/输出端口; 和连接到光耦合器的两个输入/输出端口。 在光路长度差分赋予单元之间，将两个偏振态之间的波长λc的半整数设定为归一化相位差，并且在光学的光波导之间设置用于产生折射率色散差的装置 路径长度差分赋予单元，从而对于两个偏振态抑制透射率相对于波长的变化率。

公开(公告)号：US08948546B2

公开(公告)日：2015-02-03

申请号：US13984480

申请日：2012-02-15

申请人： Takashi Saida ,  Hiroshi Yamazaki ,  Takashi Goh ,  Ken Tsuzuki ,  Shinji Mino

发明人： Takashi Saida ,  Hiroshi Yamazaki ,  Takashi Goh ,  Ken Tsuzuki ,  Shinji Mino

IPC分类号： G02F1/01 ,  H04B10/50 ,  G02B6/26 ,  G02B6/12 ,  G02F1/03 ,  H04B10/548

CPC分类号： G02F1/011 ,  H04B10/5053 ,  H04B10/548

摘要： An object of the present invention is to provide a temperature-independent optical frequency shifter for generating sub-carriers with a miniaturizable configuration, as well as to provide an all-optical OFDM modulator using the same that is compact, has low temperature dependence, and is even compatible with different frequency grids. Provided is an optical frequency shifter and an optical modulator using the same, the optical frequency shifter comprises one input optical port, a 1-input, 2-output optical coupler optically connected thereto, two Mach-Zehnder modulation units individually optically connected to the two outputs thereof, a 2-input, 2-output optical coupler optically connected to the individual outputs thereof, and two output optical ports optically connected to the outputs thereof, wherein the two Mach-Zehnder modulation units are driven by periodic waveforms at the same frequency whose phases differ from each other by (2p+1)π/2 (p: integer).

摘要翻译： 本发明的目的是提供一种用于产生具有小型化配置的子载波的与温度无关的光学移频器，并且提供使用紧凑的，具有低温度依赖性的全光OFDM调制器，以及 甚至兼容不同的频率网格。 提供一种光学移频器和使用其的光调制器，该光学移频器包括一个输入光端口，与其光学连接的1输入2输出光耦合器，两个马赫 - 曾德调制单元，其光学连接到两个 光耦合到其各个输出的2输入2输出光耦合器和与其输出光学连接的两个输出光端口，其中两个马赫 - 策德尔调制单元以相同频率的周期波形驱动 其相位彼此相差（2p + 1）＆pgr; / 2（p：整数）。

公开(公告)号：US20130011093A1

公开(公告)日：2013-01-10

申请号：US13635845

申请日：2011-03-18

申请人： Takashi Goh ,  Takashi Yamada ,  Hiroshi Yamazaki ,  Yoshiyuki Doi

发明人： Takashi Goh ,  Takashi Yamada ,  Hiroshi Yamazaki ,  Yoshiyuki Doi

IPC分类号： G02F1/035

CPC分类号： G02F1/225 ,  G02F1/0121 ,  G02F2001/212 ,  H04B10/5051 ,  H04B10/5053 ,  H04B10/5162 ,  H04B10/54 ,  H04B10/5561 ,  H04L27/206

摘要： Disclosed is an optical modulator which substantially lowers loss and has little attenuation in the intensity of an optical signal after modulation. The optical modulator includes a 1×2 RZ pulse carver wherein optical phase shifters used for modulation are arranged along two arm waveguides held between a 1×2 coupler and a 2×2 coupler, two interferometric modulators connected respectively to two output ports of the 2×2 coupler, and a 2×1 coupler for combining the outputs of the interferometric modulators.

摘要翻译： 公开了一种光调制器，其基本上降低了损耗，并且在调制后光信号的强度几乎没有衰减。 光调制器包括1×2 RZ脉冲雕刻机，其中用于调制的光学移相器沿着保持在1×2耦合器和2×2耦合器之间的两个臂波导布置，两个干涉式调制器分别连接到2的两个输出端口 ×2耦合器和用于组合干涉式调制器的输出的2×1耦合器。

公开(公告)号：US20120106888A1

公开(公告)日：2012-05-03

申请号：US13381298

申请日：2010-07-09

申请人： Takashi Goh ,  Yoshiyuki Doi ,  Shinji Mino ,  Ken Tsuzuki ,  Hiroshi Yamazaki ,  Takashi Yamada

发明人： Takashi Goh ,  Yoshiyuki Doi ,  Shinji Mino ,  Ken Tsuzuki ,  Hiroshi Yamazaki ,  Takashi Yamada

IPC分类号： G02F1/035

CPC分类号： G02F1/0327 ,  G02B2006/12142 ,  G02B2006/12159 ,  G02F1/225 ,  G02F2201/126 ,  G02F2203/20 ,  G02F2203/21

摘要： In a nest MZI modulator in which each arm includes a child MZI, the power consumption is reduced. The hybrid integrated-type nest MZI modulator of the embodiment 1a is configured so that, instead of placing a relative phase adjusting section in a parent MZI, a bias electrode Bias 90° in which an electric field is applied in the same direction to the polarization direction in both of the upper and lower arms is placed in each child MZI (see FIG. 4B). The bias electrode Bias 90° provided in each child MZI constitute the entirety of a relative phase adjusting section. The optical signals are subjected to a phase change after the output from the child MZI (see FIG. 1A), because such relative phase adjusting section can subject the optical signals of the upper and lower arms of the child MZI to a shift change in the same direction, respectively.

摘要翻译： 在其中每个臂包括儿童MZI的巢MZI调制器中，功耗降低。 实施例1a的混合集成型嵌套MZI调制器被配置为使得不是将相对相位调整部分放置在母MZI中，而是将偏置电极偏置90°，其中向与极化相同的方向施加电场 将上臂和下臂两者的方向放置在每个子MZI中（参见图4B）。 每个子MZI中设置的偏置电极偏置90°构成相对相位调整部的整体。 在从子MZI（参见图1A）的输出之后，光信号经受相变，因为这种相对相位调整部分可以使子MZI的上臂和下臂的光信号在 相同方向。

公开(公告)号：US20120063716A1

公开(公告)日：2012-03-15

申请号：US13321780

申请日：2010-06-02

申请人： Takayuki Mizuno ,  Takashi Goh ,  Hiroshi Yamazaki ,  Shin Kamei ,  Tsutomu Kitoh

发明人： Takayuki Mizuno ,  Takashi Goh ,  Hiroshi Yamazaki ,  Shin Kamei ,  Tsutomu Kitoh

IPC分类号： G02B6/24

CPC分类号： G02B6/12007 ,  G02B6/12023

摘要： A interferometer type polarization beam combiner and splitter, which can combine or split polarized light over a wide band, is provided. The interferometer type polarization beam combiner and splitter includes: an optical splitter; an optical coupler; an optical path length difference imparting unit, which includes a plurality of optical waveguides arranged between the optical splitting unit and the optical coupling unit; one or two input/output ports connected to the optical splitter; and two input/output ports connected to the optical coupler. A half-integer of a wavelength of λc is set as a normalized phase difference, for the optical path length difference imparting unit, between two polarization states, and means for generating a difference in refractive index dispersion is provided between the optical waveguides of the optical path length difference imparting unit, so that the change rate of the transmittance with respect to wavelength is suppressed for the two polarization states.

摘要翻译： 提供了可以在宽带上组合或分离偏振光的干涉仪型偏振光束组合器和分离器。 干涉仪型偏振光束组合器和分离器包括：光分路器; 光耦合器; 光路长度差分赋予单元，其包括布置在光分离单元和光耦合单元之间的多个光波导; 连接到光分路器的一个或两个输入/输出端口; 和连接到光耦合器的两个输入/输出端口。 在光路长度差分赋予单元之间，将两个偏振态之间的波长λc的半整数设定为归一化相位差，并且在光学的光波导之间设置用于产生折射率色散差的装置 路径长度差分赋予单元，从而对于两个偏振态抑制透射率相对于波长的变化率。

公开(公告)号：US09360629B2

公开(公告)日：2016-06-07

申请号：US13984282

申请日：2012-02-14

申请人： Toshio Watanabe ,  Kenya Suzuki ,  Takashi Goh ,  Hiroshi Yamazaki ,  Atsushi Mori

发明人： Toshio Watanabe ,  Kenya Suzuki ,  Takashi Goh ,  Hiroshi Yamazaki ,  Atsushi Mori

IPC分类号： G02B6/35 ,  G02F1/313 ,  H04Q11/00 ,  G02B6/12 ,  G02F1/01 ,  G02F1/225 ,  G02F1/21

CPC分类号： G02B6/3546 ,  G02B6/3594 ,  G02B2006/12145 ,  G02F1/0147 ,  G02F1/225 ,  G02F1/3137 ,  G02F2001/212 ,  H04Q11/0005 ,  H04Q2011/0052

摘要： A waveguide type optical switch that can reduce the number of intersections in a matrix optical switch having the configuration of connecting unit optical switches and optical combining devices or optical branching devices to have a connecting function from “multiple inputs to one output” to “one input to multiple outputs”. To reduce the number of intersections in an entire matrix optical switch, an optical combining device of M inputs and one output is divided into (M−1) pieces of unit optical combining elements each having two inputs and one output, which are arranged immediately after (N−1) pieces of respective output ports excluding one piece of the output port closer to the input in the matrix optical switch out of N pieces of the output ports in the optical switch of one input and N outputs.

摘要翻译： 一种波导型光开关，其可以减少具有连接单元光开关和光学组合装置或光分路装置的配置的矩阵光开关中的交叉数，以具有从“多输入到一输出”到“一输入”的连接功能 到多个输出“。 为了减少整个矩阵光开关中的交点的数量，将M个输入和一个输出的光学组合装置分成（M-1）个单元光学组合元件，它们分别具有两个输入和一个输出 （N-1）个输出端口，在一个输入的光开关中的N个输出端口中，除了在矩阵光开关中的输入端更靠近的一个输出端口，N个输出。

公开(公告)号：US08965146B2

公开(公告)日：2015-02-24

申请号：US13381298

申请日：2010-07-09

申请人： Takashi Goh ,  Yoshiyuki Doi ,  Shinji Mino ,  Ken Tsuzuki ,  Hiroshi Yamazaki ,  Takashi Yamada

发明人： Takashi Goh ,  Yoshiyuki Doi ,  Shinji Mino ,  Ken Tsuzuki ,  Hiroshi Yamazaki ,  Takashi Yamada

IPC分类号： G02F1/035 ,  G02F1/03 ,  G02F1/225 ,  G02B6/12

CPC分类号： G02F1/0327 ,  G02B2006/12142 ,  G02B2006/12159 ,  G02F1/225 ,  G02F2201/126 ,  G02F2203/20 ,  G02F2203/21

摘要： In a nest MZI modulator in which each arm includes a child MZI, the power consumption is reduced. The hybrid integrated-type nest MZI modulator of the embodiment 1a is configured so that, instead of placing a relative phase adjusting section in a parent MZI, a bias electrode Bias 90° in which an electric field is applied in the same direction to the polarization direction in both of the upper and lower arms is placed in each child MZI (see FIG. 4B). The bias electrode Bias 90° provided in each child MZI constitute the entirety of a relative phase adjusting section. The optical signals are subjected to a phase change after the output from the child MZI (see FIG. 1A), because such relative phase adjusting section can subject the optical signals of the upper and lower arms of the child MZI to a shift change in the same direction, respectively.

摘要翻译： 在其中每个臂包括儿童MZI的巢MZI调制器中，功耗降低。 实施例1a的混合集成型嵌套MZI调制器被配置为使得不是将相对相位调整部分放置在母MZI中，而是将偏置电极偏置90°，其中向与极化相同的方向施加电场 将上臂和下臂两者的方向放置在每个子MZI中（参见图4B）。 每个子MZI中设置的偏置电极偏置90°构成相对相位调整部的整体。 在从子MZI（参见图1A）的输出之后，光信号经受相变，因为这种相对相位调整部分可以使子MZI的上臂和下臂的光信号在 相同方向。

公开(公告)号：US08705900B2

公开(公告)日：2014-04-22

申请号：US13635845

申请日：2011-03-18

申请人： Takashi Goh ,  Takashi Yamada ,  Hiroshi Yamazaki ,  Yoshiyuki Doi

发明人： Takashi Goh ,  Takashi Yamada ,  Hiroshi Yamazaki ,  Yoshiyuki Doi

IPC分类号： G02F1/035 ,  G02F1/225 ,  H04B10/54

CPC分类号： G02F1/225 ,  G02F1/0121 ,  G02F2001/212 ,  H04B10/5051 ,  H04B10/5053 ,  H04B10/5162 ,  H04B10/54 ,  H04B10/5561 ,  H04L27/206

摘要： Disclosed is an optical modulator which substantially lowers loss and has little attenuation in the intensity of an optical signal after modulation. The optical modulator includes a 1×2 RZ pulse carver wherein optical phase shifters used for modulation are arranged along two arm waveguides held between a 1×2 coupler and a 2×2 coupler, two interferometric modulators connected respectively to two output ports of the 2×2 coupler, and a 2×1 coupler for combining the outputs of the interferometric modulators.

摘要翻译： 公开了一种光调制器，其基本上降低了损耗，并且在调制后光信号的强度几乎没有衰减。 光调制器包括1×2 RZ脉冲雕刻机，其中用于调制的光学移相器沿着保持在1×2耦合器和2×2耦合器之间的两个臂波导布置，两个干涉式调制器分别连接到2的两个输出端口 ×2耦合器和用于组合干涉式调制器的输出的2×1耦合器。

公开(公告)号：US20130322815A1

公开(公告)日：2013-12-05

申请号：US13984282

申请日：2012-02-14

申请人： Toshio Watanabe ,  Kenya Suzuki ,  Takashi Goh ,  Hiroshi Yamazaki ,  Atsushi Mori

发明人： Toshio Watanabe ,  Kenya Suzuki ,  Takashi Goh ,  Hiroshi Yamazaki ,  Atsushi Mori

IPC分类号： G02B6/35

CPC分类号： G02B6/3546 ,  G02B6/3594 ,  G02B2006/12145 ,  G02F1/0147 ,  G02F1/225 ,  G02F1/3137 ,  G02F2001/212 ,  H04Q11/0005 ,  H04Q2011/0052

摘要： A waveguide type optical switch that can reduce the number of intersections in a matrix optical switch having the configuration of connecting unit optical switches and optical combining devices or optical branching devices to have a connecting function from “multiple inputs to one output” to “one input to multiple outputs”. To reduce the number of intersections in an entire matrix optical switch, an optical combining device of M inputs and one output is divided into (M−1) pieces of unit optical combining elements each having two inputs and one output, which are arranged immediately after (N−1) pieces of respective output ports excluding one piece of the output port closer to the input in the matrix optical switch out of N pieces of the output ports in the optical switch of one input and N outputs.

摘要翻译： 一种波导型光开关，其可以减少具有连接单元光开关和光学组合装置或光分路装置的配置的矩阵光开关中的交叉数，以具有从“多输入到一输出”到“一输入”的连接功能 到多个输出“。 为了减少整个矩阵光开关中的交点的数量，将M个输入和一个输出的光学组合装置分成（M-1）个单元光学组合元件，它们分别具有两个输入和一个输出 （N-1）个输出端口，在一个输入的光开关中的N个输出端口中，除了在矩阵光开关中的输入端更靠近的一个输出端口，N个输出。

公开(公告)号：US08879873B2

公开(公告)日：2014-11-04

申请号：US14000557

申请日：2012-02-24

申请人： Takashi Goh ,  Hiroshi Yamazaki

发明人： Takashi Goh ,  Hiroshi Yamazaki

IPC分类号： G02F1/035 ,  G02F1/01 ,  H04B10/516 ,  H04B10/50

CPC分类号： G02F1/0115 ,  H04B10/5053 ,  H04B10/5161

摘要： An optical modulator that supports a plurality of modulation formats is provided. The optical modulator includes: a distribution part including an optical demultiplexing/variable-branching switchable circuit; an optical modulator array; and an aggregation part including a combining ratio variable combining circuit and/or an optical multiplexing/variable-combining switchable circuit. The distribution part forms any or a combination of a variable 1×M demultiplexer/brancher, a combination of one or more fixed ILFs and an optical switch and a combination of a plurality of variable optical couplers and an optical switch; the optical modulator array includes a plurality of optical modulators; the aggregation part includes a structure of any or a combination of one or more variable optical couplers, a combination of a plurality of variable attenuators, an M×1 variable coupler, a variable M×1 demultiplexer/brancher and a combination of one or more fixed ILFs and an optical switch.

摘要翻译： 提供了支持多种调制格式的光调制器。 光调制器包括：分配部分，包括光解复用/可分转换切换电路; 光调制器阵列; 以及包括组合比可变组合电路和/或光复用/可变组合可切换电路的聚合部分。 分配部分形成变量1×M解复用器/分路器，一个或多个固定ILF的组合和光开关以及多个可变光耦合器和光开关的组合的任何或组合; 光调制器阵列包括多个光调制器; 聚合部分包括一个或多个可变光耦合器的任何或组合的结构，多个可变衰减器的组合，M×1可变耦合器，可变M×1解复用器/分支器以及一个或多个可变衰减器的组合 固定ILF和光开关。