公开(公告)号：US08971677B2

公开(公告)日：2015-03-03

申请号：US13377774

申请日：2010-06-30

申请人： Yohei Sakamaki ,  Toshikazu Hashimoto ,  Yusuke Nasu ,  Kuninori Hattori ,  Hiroshi Takahashi

发明人： Yohei Sakamaki ,  Toshikazu Hashimoto ,  Yusuke Nasu ,  Kuninori Hattori ,  Hiroshi Takahashi

IPC分类号： G02B6/26 ,  H04B10/67 ,  G02B6/12 ,  H04B10/61

CPC分类号： H04B10/677 ,  G02B6/12004 ,  G02B6/12007 ,  H04B10/611 ,  H04B10/613

摘要： An optical 90-degree hybrid circuit includes: first and second optical splitters for receiving and splitting a first and second light beam into two, respectively; a first optical coupler for generating an interfering light beam by multiplexing one of the light beams split by the first optical splitter and the second optical splitter; and a second optical coupler for generating an interfering light beam by multiplexing another one of the light beams split by the first optical splitter and the second optical splitter. The first optical splitter includes an optical coupler configured to output two light beams having equal phases, and the second optical splitter includes an optical coupler configured to output two light beams having a phase difference of 90 degrees.

摘要翻译： 光学90度混合电路包括：第一和第二光分路器，用于分别将第一和第二光束分别接收和分离成两个; 第一光耦合器，用于通过复用由第一光分路器和第二分光器分裂的光束之一来产生干涉光束; 以及第二光耦合器，用于通过复用由第一光分路器和第二分光器分裂的另一个光束来产生干涉光束。 第一光分路器包括配置为输出具有相等相位的两个光束的光耦合器，并且第二光分路器包括配置成输出具有90度相位差的两个光束的光耦合器。

公开(公告)号：US08649640B2

公开(公告)日：2014-02-11

申请号：US13379702

申请日：2010-07-22

申请人： Yohei Sakamaki ,  Yusuke Nasu ,  Toshikazu Hashimoto ,  Kuninori Hattori ,  Hiroshi Takahashi

发明人： Yohei Sakamaki ,  Yusuke Nasu ,  Toshikazu Hashimoto ,  Kuninori Hattori ,  Hiroshi Takahashi

IPC分类号： G02B6/12 ,  G02F1/295 ,  G02B6/42

CPC分类号： H04B10/611 ,  G02F1/225 ,  G02F2001/217 ,  G02F2203/04 ,  G02F2203/50 ,  H04B10/60 ,  H04B10/613 ,  H04J14/02 ,  H04J14/06

摘要： The present invention provides an optical 90-degree hybrid circuit for reducing wavelength dependency of an IQ phase difference. An optical 90-degree hybrid circuit according to the present invention comprises a first demultiplexing optical coupler including a first and second input port, a second demultiplexing optical coupler including a third and fourth input port, first and second arm waveguides connected to the first and second input port, each having the same length, a third and fourth arm waveguides connected to the third and fourth input port, each having the same length, a 90-degree phase shift section installed in one of the first to fourth arm waveguides, a first optical coupler connected to the first and third arm waveguide, and a second optical coupler connected to the second and fourth arm waveguide, the light is inputted into the first and fourth input port or into the second and third input port.

摘要翻译： 本发明提供一种用于降低IQ相位差的波长依赖性的光学90度混合电路。 根据本发明的光学90度混合电路包括包括第一和第二输入端口的第一解复用光耦合器，包括第三和第四输入端口的第二解复用光耦合器，连接到第一和第二输入端口的第一和第二臂波导 每个具有相同长度的输入端口，连接到第三和第四输入端口的第三和第四臂波导，每个具有相同的长度，安装在第一至第四臂波导之一中的90度相移部分，第一 连接到第一和第三臂波导的光耦合器和连接到第二和第四臂波导的第二光耦合器，光被输入到第一和第四输入端口或第二输入端口和第三输入端口中。

公开(公告)号：US20120141067A1

公开(公告)日：2012-06-07

申请号：US13379702

申请日：2010-07-22

申请人： Yohei Sakamaki ,  Yusuke Nasu ,  Toshikazu Hashimoto ,  Kuninori Hattori ,  Hiroshi Takahashi

发明人： Yohei Sakamaki ,  Yusuke Nasu ,  Toshikazu Hashimoto ,  Kuninori Hattori ,  Hiroshi Takahashi

IPC分类号： G02B6/26

CPC分类号： H04B10/611 ,  G02F1/225 ,  G02F2001/217 ,  G02F2203/04 ,  G02F2203/50 ,  H04B10/60 ,  H04B10/613 ,  H04J14/02 ,  H04J14/06

摘要： The present invention provides an optical 90-degree hybrid circuit for reducing wavelength dependency of an IQ phase difference. An optical 90-degree hybrid circuit according to the present invention comprises a first demultiplexing optical coupler including a first and second input port, a second demultiplexing optical coupler including a third and fourth input port, first and second arm waveguides connected to the first and second input port, each having the same length, a third and fourth arm waveguides connected to the third and fourth input port, each having the same length, a 90-degree phase shift section installed in one of the first to fourth arm waveguides, a first optical coupler connected to the first and third arm waveguide, and a second optical coupler connected to the second and fourth arm waveguide, the light is inputted into the first and fourth input port or into the second and third input port.

摘要翻译： 本发明提供一种用于降低IQ相位差的波长依赖性的光学90度混合电路。 根据本发明的光学90度混合电路包括包括第一和第二输入端口的第一解复用光耦合器，包括第三和第四输入端口的第二解复用光耦合器，连接到第一和第二输入端口的第一和第二臂波导 每个具有相同长度的输入端口，连接到第三和第四输入端口的第三和第四臂波导，每个具有相同的长度，安装在第一至第四臂波导之一中的90度相移部分，第一 连接到第一和第三臂波导的光耦合器和连接到第二和第四臂波导的第二光耦合器，光被输入到第一和第四输入端口或第二输入端口和第三输入端口中。

公开(公告)号：US20100104237A1

公开(公告)日：2010-04-29

申请号：US12521867

申请日：2007-12-27

申请人： Yusuke Nasu ,  Manabu Oguma ,  Yasuaki Hashizume ,  Yasuyuki Inoue ,  Hiroshi Takahashi ,  Kuninori Hattori ,  Toshikazu Hashimoto ,  Yohei Sakamaki

发明人： Yusuke Nasu ,  Manabu Oguma ,  Yasuaki Hashizume ,  Yasuyuki Inoue ,  Hiroshi Takahashi ,  Kuninori Hattori ,  Toshikazu Hashimoto ,  Yohei Sakamaki

IPC分类号： G02B6/27 ,  G02B6/26

CPC分类号： G02B6/12007 ,  G02B6/1228 ,  G02B6/126 ,  G02B2006/12116 ,  G02B2006/12159

摘要： In an optical interferometer, polarization dependence attributable to the optical path difference has conventionally been eliminated by inserting a half-wave plate at the center of the interferometer. However, light induced by polarization coupling produced in directional couplers used in the optical interferometer causes interference having different interference conditions from those of the normal light. Polarization rotators that effect any one of 90° rotation and −90° rotation of all states of polarization of incoming light are inserted in the optical interferometer, and thereby the interference conditions of light induced by polarization coupling are made the same as those of the normal light. Each of the polarization rotators is implemented by using two half-wave plates and by varying an angle of combination of these half-wave plates. Alternatively, each of the polarization rotators is implemented through a combination of one half-wave plate and a waveguide having birefringence properties.

摘要翻译： 在光干涉仪中，通过在干涉仪的中心插入半波片，传统上消除了归因于光程差的偏振度依赖性。 然而，由光干涉仪中使用的定向耦合器产生的偏振耦合引起的光引起与正常光的干扰条件不同的干扰。 将影响入射光的所有偏振态的90°旋转和-90°旋转中的任何一个的极化旋转体插入到光学干涉仪中，由此使由偏振耦合引起的光的干涉条件与正常的相同 光。 每个偏振旋转器通过使用两个半波片并通过改变这些半波片的组合角来实现。 或者，每个偏振旋转器通过一个半波片和具有双折射性质的波导的组合来实现。

公开(公告)号：US20120082414A1

公开(公告)日：2012-04-05

申请号：US13377774

申请日：2010-06-30

申请人： Yohei Sakamaki ,  Toshikazu Hashimoto ,  Yusuke Nasu ,  Kuninori Hattori ,  Hiroshi Takahashi

发明人： Yohei Sakamaki ,  Toshikazu Hashimoto ,  Yusuke Nasu ,  Kuninori Hattori ,  Hiroshi Takahashi

IPC分类号： G02B6/26

CPC分类号： H04B10/677 ,  G02B6/12004 ,  G02B6/12007 ,  H04B10/611 ,  H04B10/613

摘要： An optical 90-degree hybrid circuit includes: first and second optical splitters for receiving and splitting a first and second light beam into two, respectively; a first optical coupler for generating an interfering light beam by multiplexing one of the light beams split by the first optical splitter and the second optical splitter; and a second optical coupler for generating an interfering light beam by multiplexing another one of the light beams split by the first optical splitter and the second optical splitter. The first optical splitter includes an optical coupler configured to output two light beams having equal phases, and the second optical splitter includes an optical coupler configured to output two light beams having a phase difference of 90 degrees.

摘要翻译： 光学90度混合电路包括：第一和第二光分路器，用于分别将第一和第二光束分别接收和分离成两个; 第一光耦合器，用于通过复用由第一光分路器和第二分光器分裂的光束之一来产生干涉光束; 以及第二光耦合器，用于通过复用由第一光分路器和第二分光器分裂的另一个光束来产生干涉光束。 第一光分路器包括配置为输出具有相等相位的两个光束的光耦合器，并且第二光分路器包括配置成输出具有90度相位差的两个光束的光耦合器。

公开(公告)号：US07899279B2

公开(公告)日：2011-03-01

申请号：US12528933

申请日：2009-01-09

申请人： Yusuke Nasu ,  Kuninori Hattori ,  Toshikazu Hashimoto ,  Yohei Sakamaki ,  Hiroshi Takahashi ,  Yasuyuki Inoue

发明人： Yusuke Nasu ,  Kuninori Hattori ,  Toshikazu Hashimoto ,  Yohei Sakamaki ,  Hiroshi Takahashi ,  Yasuyuki Inoue

IPC分类号： G02B6/12

CPC分类号： H04B10/676 ,  G02B6/12007 ,  G02B6/12011 ,  G02B6/12028 ,  G02B6/126 ,  G02B6/29355 ,  G02B6/29397 ,  G02B2006/12116 ,  G02B2006/12147 ,  G02B2006/1215

摘要： A demodulator is provided for a multilevel differential phase shift keyed signal, capable of eliminating polarization dependence due to birefringence and polarization coupling-induced light resulting from a waveguide structure, and also, polarization dependence due to dynamic birefringence produced at the time of driving a variable phase adjuster. The demodulator is configured of an optical delay line interferometer of a waveguide interference type. The S/N ratio of a demodulated signal in the demodulator formed by the optical delay line interferometer can be also improved. Further, both the polarization dependence and the temperature dependence of the optical delay line interferometer can be reduced. The disposition of a polarization converter and groves filled with a temperature compensation material makes it possible to provide a circuit configuration suitable for eliminating the polarization dependence and the temperature dependence of the optical delay line interferometer.

摘要翻译： 提供了一种用于多电平差分相移键控信号的解调器，其能够消除由于波导结构产生的双折射和偏振耦合引起的光的偏振依赖性，以及由驱动变量时产生的动态双折射引起的偏振相关性 相位调节器。 解调器由波导干涉型光延迟线干涉仪构成。 由光延迟线干涉仪形成的解调器中的解调信号的S / N比也可以提高。 此外，可以减少光学延迟线干涉仪的偏振相关性和温度依赖性。 充满温度补偿材料的偏振转换器和园林的布置使得可以提供适于消除光学延迟线干涉仪的偏振依赖性和温度依赖性的电路配置。

公开(公告)号：US08588560B2

公开(公告)日：2013-11-19

申请号：US13378034

申请日：2010-07-09

申请人： Yohei Sakamaki ,  Takashi Goh ,  Toshikazu Hashimoto ,  Yusuke Nasu ,  Kuninori Hattori ,  Hiroshi Takahashi

发明人： Yohei Sakamaki ,  Takashi Goh ,  Toshikazu Hashimoto ,  Yusuke Nasu ,  Kuninori Hattori ,  Hiroshi Takahashi

IPC分类号： G02B6/12 ,  G02B6/26 ,  G02B6/42 ,  H04B10/00

CPC分类号： H04B10/611 ,  H04B10/60 ,  H04B10/613 ,  H04B10/614

摘要： An optical 90-degree hybrid circuit includes a first demultiplexing optical coupler having two or more first input ports and two or more first output ports, a second demultiplexing optical coupler having two or more second input ports and two or more second output ports, two first arm waveguides connected to the first output ports, two second arm waveguides connected to the second output ports, a 90-degree phase shift section installed in one of the four arm waveguides, a first optical coupler and a second optical coupler connected to the first arm waveguides and the second arm waveguides, a first optical waveguide for connecting an optical splitter and the first input ports, and a second optical waveguide for connecting the optical splitter and the second input ports, wherein an optical length of the first optical waveguide is different from that of the second optical waveguide.

摘要翻译： 光学90度混合电路包括具有两个或多个第一输入端口和两个或更多个第一输出端口的第一解复用光耦合器，具有两个或多个第二输入端口和两个或更多个第二输出端口的第二解复用光耦合器，两个第一输出端口 连接到第一输出端口的臂波导，连接到第二输出端口的两个第二臂波导，安装在四个臂波导之一中的90度相移部分，连接到第一臂的第一光耦合器和第二光耦合器 波导和第二臂波导，用于连接光分路器和第一输入端口的第一光波导和用于连接光分路器和第二输入端口的第二光波导，其中第一光波导的光学长度不同于 第二光波导的。

公开(公告)号：US20120093457A1

公开(公告)日：2012-04-19

申请号：US13378034

申请日：2010-07-09

申请人： Yohei Sakamaki ,  Takashi Goh ,  Toshikazu Hashimoto ,  Yusuke Nasu ,  Kuninori Hattori ,  Hiroshi Takahashi

发明人： Yohei Sakamaki ,  Takashi Goh ,  Toshikazu Hashimoto ,  Yusuke Nasu ,  Kuninori Hattori ,  Hiroshi Takahashi

IPC分类号： G02B6/12

CPC分类号： H04B10/611 ,  H04B10/60 ,  H04B10/613 ,  H04B10/614

摘要： An optical 90-degree hybrid circuit includes a first demultiplexing optical coupler having two or more first input ports and two or more first output ports, a second demultiplexing optical coupler having two or more second input ports and two or more second output ports, two first arm waveguides connected to the first output ports, two second arm waveguides connected to the second output ports, a 90-degree phase shift section installed in one of the four arm waveguides, a first optical coupler and a second optical coupler connected to the first arm waveguides and the second arm waveguides, a first optical waveguide for connecting an optical splitter and the first input ports, and a second optical waveguide for connecting the optical splitter and the second input ports, wherein an optical length of the first optical waveguide is different from that of the second optical waveguide.

摘要翻译： 光学90度混合电路包括具有两个或多个第一输入端口和两个或更多个第一输出端口的第一解复用光耦合器，具有两个或多个第二输入端口和两个或更多个第二输出端口的第二解复用光耦合器，两个第一输出端口 连接到第一输出端口的臂波导，连接到第二输出端口的两个第二臂波导，安装在四个臂波导之一中的90度相移部分，连接到第一臂的第一光耦合器和第二光耦合器 波导和第二臂波导，用于连接光分路器和第一输入端口的第一光波导和用于连接光分路器和第二输入端口的第二光波导，其中第一光波导的光学长度不同于 第二光波导的。

公开(公告)号：US08150219B2

公开(公告)日：2012-04-03

申请号：US12521867

申请日：2007-12-27

申请人： Yusuke Nasu ,  Manabu Oguma ,  Yasuaki Hashizume ,  Yasuyuki Inoue ,  Hiroshi Takahashi ,  Kuninori Hattori ,  Toshikazu Hashimoto ,  Yohei Sakamaki

发明人： Yusuke Nasu ,  Manabu Oguma ,  Yasuaki Hashizume ,  Yasuyuki Inoue ,  Hiroshi Takahashi ,  Kuninori Hattori ,  Toshikazu Hashimoto ,  Yohei Sakamaki

IPC分类号： G02B6/27 ,  G02B6/26

CPC分类号： G02B6/12007 ,  G02B6/1228 ,  G02B6/126 ,  G02B2006/12116 ,  G02B2006/12159

摘要： In an optical interferometer, polarization dependence attributable to the optical path difference has conventionally been eliminated by inserting a half-wave plate at the center of the interferometer. However, light induced by polarization coupling produced in directional couplers used in the optical interferometer causes interference having different interference conditions from those of the normal light. Polarization rotators that effect any one of 90° rotation and −90° rotation of all states of polarization of incoming light are inserted in the optical interferometer, and thereby the interference conditions of light induced by polarization coupling are made the same as those of the normal light. Each of the polarization rotators is implemented by using two half-wave plates and by varying an angle of combination of these half-wave plates. Alternatively, each of the polarization rotators is implemented through a combination of one half-wave plate and a waveguide having birefringence properties.

摘要翻译： 在光干涉仪中，通过在干涉仪的中心插入半波片，传统上消除了归因于光程差的偏振度依赖性。 然而，由光干涉仪中使用的定向耦合器产生的偏振耦合引起的光引起与正常光的干扰条件不同的干扰。 将影响入射光的所有偏振态的90°旋转和-90°旋转中的任何一个的极化旋转体插入到光学干涉仪中，由此使由偏振耦合引起的光的干涉条件与正常的相同 光。 每个偏振旋转器通过使用两个半波片并通过改变这些半波片的组合角来实现。 或者，每个偏振旋转器通过一个半波片和具有双折射性质的波导的组合来实现。

公开(公告)号：US20100119189A1

公开(公告)日：2010-05-13

申请号：US12528933

申请日：2009-01-09

申请人： Yusuke Nasu ,  Kuninori Hattori ,  Toshikazu Hashimoto ,  Yohei Sakamaki ,  Hiroshi Takahashi ,  Yasuyuki Inoue

发明人： Yusuke Nasu ,  Kuninori Hattori ,  Toshikazu Hashimoto ,  Yohei Sakamaki ,  Hiroshi Takahashi ,  Yasuyuki Inoue

IPC分类号： G02F1/225 ,  G02B6/00

CPC分类号： H04B10/676 ,  G02B6/12007 ,  G02B6/12011 ,  G02B6/12028 ,  G02B6/126 ,  G02B6/29355 ,  G02B6/29397 ,  G02B2006/12116 ,  G02B2006/12147 ,  G02B2006/1215

摘要： A demodulator is provided for a multilevel differential phase shift keyed signal, capable of eliminating polarization dependence due to birefringence and polarization coupling-induced light resulting from a waveguide structure, and also, polarization dependence due to dynamic birefringence produced at the time of driving a variable phase adjuster. The demodulator is configured of an optical delay line interferometer of a waveguide interference type. The S/N ratio of a demodulated signal in the demodulator formed by the optical delay line interferometer can be also improved. Further, both the polarization dependence and the temperature dependence of the optical delay line interferometer can be reduced. The disposition of a polarization converter and groves filled with a temperature compensation material makes it possible to provide a circuit configuration suitable for eliminating the polarization dependence and the temperature dependence of the optical delay line interferometer.

摘要翻译： 提供了一种用于多电平差分相移键控信号的解调器，其能够消除由于波导结构产生的双折射和偏振耦合引起的光的偏振依赖性，以及由驱动变量时产生的动态双折射引起的偏振相关性 相位调节器。 解调器由波导干涉型光延迟线干涉仪构成。 由光延迟线干涉仪形成的解调器中的解调信号的S / N比也可以提高。 此外，可以减少光学延迟线干涉仪的偏振相关性和温度依赖性。 充满温度补偿材料的偏振转换器和园林的布置使得可以提供适于消除光学延迟线干涉仪的偏振依赖性和温度依赖性的电路配置。