公开(公告)号：US20110116802A1

公开(公告)日：2011-05-19

申请号：US13054158

申请日：2009-06-30

申请人： Shin Kamei ,  Tsutomu Kitoh ,  Masaki Kohtoku ,  Tomohiro Shibata ,  Takuya Tanaka ,  Yasuyuki Inoue ,  Mikitaka Itoh

发明人： Shin Kamei ,  Tsutomu Kitoh ,  Masaki Kohtoku ,  Tomohiro Shibata ,  Takuya Tanaka ,  Yasuyuki Inoue ,  Mikitaka Itoh

IPC分类号： H04J14/02

CPC分类号： G02B6/12028 ,  G02B6/12019 ,  G02B6/29352 ,  G02B6/29398

摘要： An optical wavelength multiplexing/de-multiplexing circuit having a low loss and a flat transmission spectrum is provided. The optical wavelength multiplexing/de-multiplexing circuit compensates a temperature dependence of a center transmission wavelength which remains in an athermal AWG, and has an excellent accuracy of the center transmission wavelength in a whole operating temperature range or has a comparatively wide operable temperature range. The temperature dependence of the transmission wavelength in the athermal MZI is modulated and set so as to cancel the temperature dependence of the center wavelength which remains in the athermal AWG. The present invention focuses particularly on an optical coupler in the MZI and modulates the temperature dependence of the transmission wavelength in the MZI by providing the optical coupler itself with a mechanism which changes a phase difference between two outputs by temperature.

摘要翻译： 提供具有低损耗和平坦透射光谱的光波长多路复用/解复用电路。 光波长复用/解复用电路补偿保持在无热AWG中的中心透射波长的温度依赖性，并且在整个工作温度范围内具有优异的中心透射波长的精度或具有相当宽的可操作温度范围。 在无热MZI中的透射波长的温度依赖性被调制和设定，以抵消保持在无热AWG中的中心波长的温度依赖性。 本发明特别着重于MZI中的光耦合器，并且通过为光耦合器本身提供一种通过温度改变两个输出之间的相位差的机构来调制MZI中的透射波长的温度依赖性。

公开(公告)号：US08369666B2

公开(公告)日：2013-02-05

申请号：US13054158

申请日：2009-06-30

申请人： Shin Kamei ,  Tsutomu Kitoh ,  Masaki Kohtoku ,  Tomohiro Shibata ,  Takuya Tanaka ,  Yasuyuki Inoue ,  Mikitaka Itoh

发明人： Shin Kamei ,  Tsutomu Kitoh ,  Masaki Kohtoku ,  Tomohiro Shibata ,  Takuya Tanaka ,  Yasuyuki Inoue ,  Mikitaka Itoh

IPC分类号： G02B6/34 ,  H04J14/02

CPC分类号： G02B6/12028 ,  G02B6/12019 ,  G02B6/29352 ,  G02B6/29398

摘要： An optical wavelength multiplexing/de-multiplexing circuit having a low loss and a flat transmission spectrum is provided. The optical wavelength multiplexing/de-multiplexing circuit compensates a temperature dependence of a center transmission wavelength which remains in an athermal AWG, and has an excellent accuracy of the center transmission wavelength in a whole operating temperature range or has a comparatively wide operable temperature range. The temperature dependence of the transmission wavelength in the athermal MZI is modulated and set so as to cancel the temperature dependence of the center wavelength which remains in the athermal AWG. The present invention focuses particularly on an optical coupler in the MZI and modulates the temperature dependence of the transmission wavelength in the MZI by providing the optical coupler itself with a mechanism which changes a phase difference between two outputs by temperature.

摘要翻译： 提供具有低损耗和平坦透射光谱的光波长多路复用/解复用电路。 光波长复用/解复用电路补偿保持在无热AWG中的中心透射波长的温度依赖性，并且在整个工作温度范围内具有优异的中心透射波长精度或具有相对较宽的可操作温度范围。 在无热MZI中的透射波长的温度依赖性被调制和设定，以抵消保持在无热AWG中的中心波长的温度依赖性。 本发明特别着重于MZI中的光耦合器，并且通过为光耦合器本身提供一种通过温度改变两个输出之间的相位差的机构来调制MZI中的透射波长的温度依赖性。

公开(公告)号：US20110110624A1

公开(公告)日：2011-05-12

申请号：US13001347

申请日：2009-06-30

申请人： Shin Kamei ,  Yasuyuki Inoue ,  Mikitaka Itoh

发明人： Shin Kamei ,  Yasuyuki Inoue ,  Mikitaka Itoh

IPC分类号： G02B6/28

CPC分类号： G02B6/12026 ,  G02B6/12014 ,  G02B6/12016 ,  G02B6/12019 ,  G02B6/12028 ,  G02B6/1203

摘要： An optical wavelength multi/demultiplexing circuit is provided in which temperature dependence at a transmission center wavelength remained in an athermalized AWG is compensated. An AWG according to an embodiment of the present invention is compensated for the main temperature dependence at the transmission center wavelength. The AWG comprises an optical splitter, a first and second arm waveguides, an optical mode combining coupler and a multimode waveguide between an input/output waveguide and a slab waveguide. The optical mode combining coupler couples fundamental mode light from the first arm waveguide as fundamental mode and the fundamental mode light from the second arm waveguide as first mode. The multimode waveguide is capable of propagating the fundamental and first mode light. This AWG is configured such that the temperature dependence remained in the arrayed waveguide grating is compensated by changing the optical path length difference between the first and second arm waveguides with temperature.

摘要翻译： 提供了一种光波长多路解多路复用电路，其中传输中心波长处的温度依赖性保持在非热化AWG中。 根据本发明的实施例的AWG被补偿在传输中心波长处的主要温度依赖性。 AWG包括光分路器，第一和第二臂波导，光学模式组合耦合器和输入/输出波导和平板波导之间的多模波导。 光学模式组合耦合器将来自第一臂波导的基本模式光耦合作为基本模式，并将来自第二臂波导的基模光耦合为第一模式。 多模波导能够传播基本和第一模式光。 该AWG被配置为使得通过改变第一和第二臂波导之间的光程长度差随温度来补偿保持在阵列波导光栅中的温度依赖性。

公开(公告)号：US08867873B2

公开(公告)日：2014-10-21

申请号：US13001347

申请日：2009-06-30

申请人： Shin Kamei ,  Yasuyuki Inoue ,  Mikitaka Itoh

发明人： Shin Kamei ,  Yasuyuki Inoue ,  Mikitaka Itoh

IPC分类号： G02B6/28 ,  G02B6/12

CPC分类号： G02B6/12026 ,  G02B6/12014 ,  G02B6/12016 ,  G02B6/12019 ,  G02B6/12028 ,  G02B6/1203

摘要： An optical wavelength multi/demultiplexing circuit is provided in which temperature dependence at a transmission center wavelength remained in an athermalized AWG is compensated. An AWG according to an embodiment of the present invention is compensated for the main temperature dependence at the transmission center wavelength. The AWG comprises an optical splitter, a first and second arm waveguides, an optical mode combining coupler and a multimode waveguide between an input/output waveguide and a slab waveguide. The optical mode combining coupler couples fundamental mode light from the first arm waveguide as fundamental mode and the fundamental mode light from the second arm waveguide as first mode. The multimode waveguide is capable of propagating the fundamental and first mode light. This AWG is configured such that the temperature dependence remained in the arrayed waveguide grating is compensated by changing the optical path length difference between the first and second arm waveguides with temperature.

摘要翻译： 提供了一种光波长多路解多路复用电路，其中传输中心波长处的温度依赖性保持在非热化AWG中。 根据本发明的实施例的AWG被补偿在传输中心波长处的主要温度依赖性。 AWG包括光分路器，第一和第二臂波导，光学模式组合耦合器和输入/输出波导和平板波导之间的多模波导。 光学模式组合耦合器将来自第一臂波导的基本模式光耦合作为基本模式，并将来自第二臂波导的基模光耦合为第一模式。 多模波导能够传播基本和第一模式光。 该AWG被配置为使得通过改变第一和第二臂波导之间的光程长度差随温度来补偿保持在阵列波导光栅中的温度依赖性。

公开(公告)号：US07245793B2

公开(公告)日：2007-07-17

申请号：US10715146

申请日：2003-11-17

申请人： Shin Kamei ,  Yasuyuki Inoue ,  Takuya Tanaka ,  Toshikazu Hashimoto

发明人： Shin Kamei ,  Yasuyuki Inoue ,  Takuya Tanaka ,  Toshikazu Hashimoto

IPC分类号： G02B6/12 ,  G02B6/36

CPC分类号： G02B6/12011 ,  G02B6/12014 ,  G02B6/12016 ,  G02B6/12023 ,  G02B6/12028 ,  G02B6/122 ,  G02B6/125 ,  G02B2006/12107 ,  G02B2006/12145 ,  G02B2006/12195

摘要： An optical waveguide circuit includes a first loss component for causing a diffraction loss of light propagating through an optical waveguide, and a second loss component provided at least one of before and after the first loss component, for causing a diffraction loss less than the diffraction loss in the first loss component to the light propagating through the optical waveguide. This enables the beam spot size of the lightwave launched into the first loss component to be magnified seemingly, and to reduce the radiation angle of the lightwave at the first loss component, thereby making it possible to reduce the excess loss involved in the propagation of the light through the optical waveguide.

摘要翻译： 一种光波导电路包括：第一损耗分量，用于使通过光波导传播的光的衍射损耗和第二损耗分量提供在第一损耗分量之前和之后的至少之一，用于使衍射损耗小于衍射损耗 在通过光波导传播的光的第一损耗分量中。 这使得发射到第一损耗分量中的光波的光束尺寸看起来被放大，并且为了减小第一损耗分量处的光波的辐射角，从而可以减少在 通过光波导的光。

公开(公告)号：US20080226290A1

公开(公告)日：2008-09-18

申请号：US12042767

申请日：2008-03-05

申请人： Takaharu Ohyama ,  Takashi Goh ,  Shin Kamei ,  Shunichi Sohma ,  Mikitaka Itoh ,  Ikuo Ogawa ,  Akimasa Kaneko ,  Tomoyuki Yamada ,  Mitsuru Nagano ,  Yoshiyuki Doi ,  Takashi Saida

发明人： Takaharu Ohyama ,  Takashi Goh ,  Shin Kamei ,  Shunichi Sohma ,  Mikitaka Itoh ,  Ikuo Ogawa ,  Akimasa Kaneko ,  Tomoyuki Yamada ,  Mitsuru Nagano ,  Yoshiyuki Doi ,  Takashi Saida

IPC分类号： H04B10/08

CPC分类号： H04B10/07955

摘要： By reducing the number of PD arrays, and by simplifying the configuration of an optical power monitor in a WDM system, a miniaturized, cost reduced optical signal monitoring apparatus, optical system or optical signal monitoring method is provided. An optical power monitor 1 has an optical switch 30 having four input ports 31, a DMUX 2 having 48 output ports, and six CSP type PD array modules 50 each including an 8-channel PD array. The output port 32 of the optical switch 30 having four switchable input ports 31 is optically connected to the input port 21 of the AWG 20. The 48 output ports 22 of the AWG 20 are each optically connected to photosensitive surfaces 53 of the individual PDs included in the CSP type PD array modules 50. The CSP type PD array modules 50 are mounted on the end face of the AWG 20.

摘要翻译： 通过减少PD阵列的数量，并且通过简化WDM系统中的光功率监视器的配置，提供了一种小型化，成本降低的光信号监视装置，光学系统或光信号监视方法。 光功率监视器1具有具有四个输入端口31的光开关30，具有48个输出端口的DMUX 2和每个包括8通道PD阵列的六个CSP型PD阵列模块50。 具有四个可切换输入端口31的光开关30的输出端口32光学连接到AWG 20的输入端口21。 AWG 20的48个输出端口22每个光学连接到包括在CSP型PD阵列模块50中的各个PD的感光表面53。 CSP型PD阵列模块50安装在AWG 20的端面上。

公开(公告)号：US08737779B2

公开(公告)日：2014-05-27

申请号：US13395095

申请日：2010-08-25

申请人： Tsutomu Kitoh ,  Shin Kamei ,  Toshikazu Hashimoto ,  Yohei Sakamaki ,  Hiroshi Takahashi ,  Manabu Oguma

发明人： Tsutomu Kitoh ,  Shin Kamei ,  Toshikazu Hashimoto ,  Yohei Sakamaki ,  Hiroshi Takahashi ,  Manabu Oguma

IPC分类号： G02B6/34 ,  G02B6/293 ,  G02B6/12 ,  G02B6/26 ,  G02B6/42

CPC分类号： G02B6/29391 ,  G02B6/12009 ,  G02B6/12016 ,  G02B6/12019 ,  G02B6/12021 ,  G02B6/29355 ,  G02B6/2938 ,  G02B2006/12159

摘要： An optical wavelength multi/demultiplexer having transmission characteristics with a higher rectangular degree than a conventional one includes an AWG and two-stage lattice circuit. An example of a two-stage lattice circuit according to the present invention includes an input waveguide, a third optical coupler, a third and fourth arm waveguides, a second optical coupler, a first and second arm waveguides, a first optical coupler, and output waveguides. The optical path length differences between the third and fourth arm waveguides and between the first and second arm waveguides are designed to be ΔL. The path passing the third and first arm waveguides differs by 2·ΔL in optical length from that the fourth and second arm waveguides. The paths passing the third and second arm waveguides and passing the fourth and first arm waveguides differ by ΔL from that passing the fourth and second arm waveguides.

摘要翻译： 具有传统特性的具有比常规方式更高的矩形度的光波长多路复用器包括AWG和两级晶格电路。 根据本发明的两级晶格电路的示例包括输入波导，第三光耦合器，第三和第四臂波导，第二光耦合器，第一和第二臂波导，第一光耦合器和输出 波导。 第三和第四臂波导之间以及第一和第二臂波导之间的光程长度差被设计为＆D; L。 通过第三和第一臂波导的路径与第四和第二臂波导的光学长度不同，为2·＆Dgr; L。 通过第三和第二臂波导并使第四和第一臂波导通过的路径与通过第四和第二臂波导的路径不同。

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：US08483525B2

公开(公告)日：2013-07-09

申请号：US13143161

申请日：2010-01-08

申请人： Tsutomu Kitoh ,  Shin Kamei ,  Toshikazu Hashimoto ,  Yohei Sakamaki ,  Hiroshi Takahashi ,  Manabu Oguma

发明人： Tsutomu Kitoh ,  Shin Kamei ,  Toshikazu Hashimoto ,  Yohei Sakamaki ,  Hiroshi Takahashi ,  Manabu Oguma

IPC分类号： G02B6/12

CPC分类号： G02B6/12019 ,  G02B6/12014 ,  G02B6/12016 ,  G02B6/12021

摘要： When a conventional synchronized AWG is employed to extend a transmission passband, an increase in loss near the optical center frequency can not be avoided. Because of passband width limit, a problem has existed in that the synchronized AWG could not be applied for a large, complicated communication system wherein a signal light passes a number of points. Therefore, an optical wavelength multiplexing/demultiplexing circuit of the present invention is a synchronized AWG, which includes an optical splitter arranged in an interference circuit that is connected on the side of one slab waveguide. The splitting ratio of the optical splitter varies, depending on the optical frequency, and the value becomes minimum near the optical center frequency of the synchronized AWG. The optical splitter is operated so that the splitting ratio is comparatively great at optical frequencies distant from the optical center frequency.

摘要翻译： 当使用传统的同步AWG来扩展传输通带时，不能避免光中心频率附近损耗的增加。 由于通带宽度限制，存在的问题是，同步的AWG不能应用于信号光通过多个点的大型复杂的通信系统。 因此，本发明的光波分复用/解复用电路是同步的AWG，其包括布置在连接在一个平板波导侧的干扰电路中的光分路器。 光分路器的分频比根据光频率而变化，并且在同步AWG的光中心频率附近值变得最小。 操作光分路器，使得在远离光中心频率的光频率下的分光比相对较大。

公开(公告)号：US20110268447A1

公开(公告)日：2011-11-03

申请号：US13143161

申请日：2010-01-08

申请人： Tsutomu Kitoh ,  Shin Kamei ,  Toshikazu Hashimoto ,  Yohei Sakamaki ,  Hiroshi Takahashi ,  Manabu Oguma

发明人： Tsutomu Kitoh ,  Shin Kamei ,  Toshikazu Hashimoto ,  Yohei Sakamaki ,  Hiroshi Takahashi ,  Manabu Oguma

IPC分类号： H04J14/02

CPC分类号： G02B6/12019 ,  G02B6/12014 ,  G02B6/12016 ,  G02B6/12021

摘要： When a conventional synchronized AWG is employed to extend a transmission passband, an increase in loss near the optical center frequency can not be avoided. Because of passband width limit, a problem has existed in that the synchronized AWG could not be applied for a large, complicated communication system wherein a signal light passes a number of points. Therefore, an optical wavelength multiplexing/demultiplexing circuit of the present invention is a synchronized AWG, which includes an optical splitter arranged in an interference circuit that is connected on the side of one slab waveguide. The splitting ratio of the optical splitter varies, depending on the optical frequency, and the value becomes minimum near the optical center frequency of the synchronized AWG. The optical splitter is operated so that the splitting ratio is comparatively great at optical frequencies distant from the optical center frequency.

摘要翻译： 当使用传统的同步AWG来扩展传输通带时，不能避免光中心频率附近损耗的增加。 由于通带宽度限制，存在的问题是，同步的AWG不能应用于信号光通过多个点的大型复杂的通信系统。 因此，本发明的光波分复用/解复用电路是同步的AWG，其包括布置在连接在一个平板波导侧的干扰电路中的光分路器。 光分路器的分频比根据光频率而变化，并且在同步AWG的光中心频率附近值变得最小。 操作光分路器，使得在远离光中心频率的光频率下的分光比相对较大。