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公开(公告)号：US09235003B2
公开(公告)日：2016-01-12
申请号：US13981285
申请日：2012-01-25
申请人： Takashi Saida , Yusuke Nasu , Takayuki Mizuno , Ryoichi Kasahara
发明人： Takashi Saida , Yusuke Nasu , Takayuki Mizuno , Ryoichi Kasahara
CPC分类号： G02B6/126 , G02B6/2793 , G02B6/2813 , G02B2006/12116 , G02B2006/1215
摘要： Provided is a waveguide-type polarization beam splitter in which deterioration of a polarization extinction ratio due to temperature change and wavelength change is suppressed. A groove is formed to extend across a pair of optical waveguide arms and two quarter wave plates are provided in the groove to extend respectively across the arms. Polarization axes of the quarter wave plates are orthogonal to each other. A first optical coupler which gives a phase difference of 0° or 180° between coupled or split light beams and a second optical coupler which gives a phase difference of 90° or −90° between coupled or split light beams are used in combination.
摘要翻译： 提供了抑制由于温度变化和波长变化引起的偏振消光比的劣化的波导型偏振光束分离器。 形成一个沟槽延伸穿过一对光波导臂，并且两个四分之一波片设置在凹槽中以分别延伸穿过臂。 四分之一波片的偏振轴彼此正交。 在耦合或分裂光束之间给出0°或180°的相位差的第一光耦合器和在耦合或分束光束之间给出90°或-90°的相位差的第二光耦合器组合使用。
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公开(公告)号：US08971677B2
公开(公告)日：2015-03-03
申请号：US13377774
申请日：2010-06-30
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。
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公开(公告)号：US20130301977A1
公开(公告)日：2013-11-14
申请号：US13981304
申请日：2012-01-25
申请人： Takashi Saida , Yusuke Nasu , Takayuki Mizuno , Ryoichi Kasahara
发明人： Takashi Saida , Yusuke Nasu , Takayuki Mizuno , Ryoichi Kasahara
IPC分类号： G02B6/27
CPC分类号： G02B6/2706 , G02B6/126 , G02B27/283
摘要： Provided is a waveguide-type polarization beam splitter in which deterioration of a polarization extinction ratio due to temperature change and wavelength change is suppressed. The waveguide-type polarization beam splitter includes: input optical waveguides; a first multimode interference optical coupler; a pair of optical waveguide arms; a second multimode interference optical coupler; and output optical waveguides. A quarter wavelength delay is provided in one of the pair of optical waveguide arms, a groove is formed to extend across both of the pair of optical waveguide arms, and two quarter wave plates are provided in the groove to extend respectively across the arms. Polarization axes of the respective quarter wave plates are orthogonal to each other.
摘要翻译： 提供了抑制由于温度变化和波长变化引起的偏振消光比的劣化的波导型偏振光束分离器。 波导型偏振分束器包括：输入光波导; 第一个多模干涉光耦合器; 一对光波导臂; 第二多模干涉光耦合器; 并输出光波导。 在一对光波导臂中的一个中提供四分之一波长延迟，形成一个沟槽以延伸穿过该对光波导臂的两个，并且两个四分之一波片设置在凹槽中以分别延伸穿过臂。 各个四分之一波片的偏振轴彼此正交。
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公开(公告)号：US20130301976A1
公开(公告)日：2013-11-14
申请号：US13981285
申请日：2012-01-25
申请人： Takashi Saida , Yusuke Nasu , Takayuki Mizuno , Ryoichi Kasahara
发明人： Takashi Saida , Yusuke Nasu , Takayuki Mizuno , Ryoichi Kasahara
IPC分类号： G02B6/126
CPC分类号： G02B6/126 , G02B6/2793 , G02B6/2813 , G02B2006/12116 , G02B2006/1215
摘要： Provided is a waveguide-type polarization beam splitter in which deterioration of a polarization extinction ratio due to temperature change and wavelength change is suppressed. A groove is formed to extend across a pair of optical waveguide arms and two quarter wave plates are provided in the groove to extend respectively across the arms. Polarization axes of the quarter wave plates are orthogonal to each other. A first optical coupler which gives a phase difference of 0° or 180° between coupled or split light beams and a second optical coupler which gives a phase difference of 90° or −90° between coupled or split light beams are used in combination.
摘要翻译： 提供了抑制由于温度变化和波长变化引起的偏振消光比的劣化的波导型偏振光束分离器。 形成一个沟槽延伸穿过一对光波导臂，并且两个四分之一波片设置在凹槽中以分别延伸穿过臂。 四分之一波片的偏振轴彼此正交。 在耦合或分裂光束之间给出0°或180°的相位差的第一光耦合器和在耦合或分束光束之间给出90°或-90°的相位差的第二光耦合器组合使用。
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公开(公告)号：US08649640B2
公开(公告)日：2014-02-11
申请号：US13379702
申请日：2010-07-22
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。
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公开(公告)号：US20120141067A1
公开(公告)日：2012-06-07
申请号：US13379702
申请日：2010-07-22
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。
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公开(公告)号：US09323000B2
公开(公告)日：2016-04-26
申请号：US13981304
申请日：2012-01-25
申请人： Takashi Saida , Yusuke Nasu , Takayuki Mizuno , Ryoichi Kasahara
发明人： Takashi Saida , Yusuke Nasu , Takayuki Mizuno , Ryoichi Kasahara
CPC分类号： G02B6/2706 , G02B6/126 , G02B27/283
摘要： Provided is a waveguide-type polarization beam splitter in which deterioration of a polarization extinction ratio due to temperature change and wavelength change is suppressed. The waveguide-type polarization beam splitter includes: input optical waveguides; a first multimode interference optical coupler; a pair of optical waveguide arms; a second multimode interference optical coupler; and output optical waveguides. A quarter wavelength delay is provided in one of the pair of optical waveguide arms, a groove is formed to extend across both of the pair of optical waveguide arms, and two quarter wave plates are provided in the groove to extend respectively across the arms. Polarization axes of the respective quarter wave plates are orthogonal to each other.
摘要翻译： 提供了抑制由于温度变化和波长变化引起的偏振消光比的劣化的波导型偏振光束分离器。 波导型偏振分束器包括：输入光波导; 第一个多模干涉光耦合器; 一对光波导臂; 第二多模干涉光耦合器; 并输出光波导。 在一对光波导臂中的一个中提供四分之一波长延迟，形成一个沟槽以延伸穿过该对光波导臂的两个，并且两个四分之一波片设置在凹槽中以分别延伸穿过臂。 各个四分之一波片的偏振轴彼此正交。
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公开(公告)号：US20120082414A1
公开(公告)日：2012-04-05
申请号：US13377774
申请日：2010-06-30
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。
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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。
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