公开(公告)号：US06625370B2

公开(公告)日：2003-09-23

申请号：US09931684

申请日：2001-08-16

申请人： Mikitaka Itoh ,  Ryoichi Kasahara ,  Takashi Saida ,  Yasuhiro Hida

发明人： Mikitaka Itoh ,  Ryoichi Kasahara ,  Takashi Saida ,  Yasuhiro Hida

IPC分类号： G02B610

CPC分类号： G02B6/136 ,  G02B6/122 ,  G02B6/132 ,  G02B2006/12061 ,  G02B2006/12097 ,  G02B2006/121 ,  G02B2006/12176

摘要： An optical waveguide and an optical waveguide circuit having polarization insensitivity or a required low-level polarization dependence without degradation of the optical characteristics and reliability are disclosed, and a fabricating method of an optical waveguide and an optical waveguide circuit having polarization insensitivity or a required low-level polarization dependence without increasing the fabricating burden and the cost are disclosed. The optical waveguide comprises a planar substrate; a lower cladding which is provided on the planar substrate, where the lower cladding has a ridge; a core, provided on the ridge of the lower cladding, for transmitting light; and an upper cladding provided in a manner such that the core is covered with the upper cladding. The ridge has a shape predetermined so as to decrease polarization dependence of the optical waveguide to a required low level.

公开(公告)号：US06775454B2

公开(公告)日：2004-08-10

申请号：US10142130

申请日：2002-05-09

申请人： Mikitaka Itoh ,  Takashi Saida ,  Yasuhiro Hida ,  Yasuyuki Inoue

发明人： Mikitaka Itoh ,  Takashi Saida ,  Yasuhiro Hida ,  Yasuyuki Inoue

IPC分类号： G02B626

CPC分类号： G02B6/1228 ,  G02B6/132 ,  G02B2006/121 ,  G02B2006/12195

摘要： A silica-based optical waveguide circuit serves to reduce the time required to production while allowing a spot size converting function to work sufficiently. In a silica-based optical waveguide circuit comprising an input/output waveguide core formed to be thicker than an waveguide core and a tapered portion for connecting the input/output waveguide core and the waveguide core, wherein the waveguide circuit further has a core layer at each side of the input/output waveguide core, a thickness T of the core layer at the side of the input/output waveguide core is smaller than the thickness H of the input/output waveguide core.

摘要翻译： 二氧化硅基光波导电路用于减少制作时间，同时允许光点尺寸转换功能充分发挥作用。 在包括形成为比波导芯厚的输入/输出波导芯和用于连接输入/输出波导芯和波导芯的锥形部分的二氧化硅基光波导电路中，其中波导电路还具有芯层 输入/输出波导芯的每一侧，芯层在输入/输出波导芯一侧的厚度T小于输入/输出波导芯的厚度H.

公开(公告)号：US06937797B2

公开(公告)日：2005-08-30

申请号：US09950635

申请日：2001-09-13

申请人： Takayuki Mizuno ,  Tsutomu Kitoh ,  Yasuyuki Inoue ,  Yoshinori Hibino ,  Mikitaka Itoh ,  Takashi Saida ,  Yasuhiro Hida

发明人： Takayuki Mizuno ,  Tsutomu Kitoh ,  Yasuyuki Inoue ,  Yoshinori Hibino ,  Mikitaka Itoh ,  Takashi Saida ,  Yasuhiro Hida

IPC分类号： G02B6/12 ,  G02B6/122 ,  G02B6/132 ,  G02B6/136 ,  G02B6/34 ,  G02B6/26

CPC分类号： G02B6/12011 ,  G02B6/12016 ,  G02B6/12023 ,  G02B6/1228 ,  G02B6/132 ,  G02B6/136 ,  G02B2006/121 ,  G02B2006/12176

摘要： A planar lightwave circuit is provided. The planar lightwave circuit includes a waveguide and a spotsize converter which is a part of the waveguide, wherein a core is embedded in a cladding in the waveguide, and the spotsize converter is located near an end face of a substrate on which the planar lightwave circuit is formed, the spotsize converter including: a core width fine-tuning part in an end face side of the substrate; and a core width converting part which follows the core width fine-tuning part; wherein core width of the spotsize converter is minimum at an end face of the substrate, a mean taper angle θ1 of the core width fine-tuning part is larger than 0° and smaller than a mean taper angle θ2 of the core width converting part.

摘要翻译： 提供平面光波电路。 平面光波电路包括作为波导的一部分的波导和斑点转换器，其中芯体嵌入在波导中的包层中，并且斑点转换器位于基板的端面附近，在该基板上的平面光波电路 所述斑点转换器包括：在所述基板的端面侧的芯宽度微调部; 以及沿着芯宽微调部分的芯宽转换部分; 其中斑点转换器的芯宽度在基板的端面处最小，芯宽度微调部分的平均锥角θ1大于0°并且小于平均锥角 核心宽度转换部分的θ2/2。

公开(公告)号：US06580862B2

公开(公告)日：2003-06-17

申请号：US10026084

申请日：2001-12-21

申请人： Toshimi Kominato ,  Akio Sugita ,  Mikitaka Itoh ,  Yasuyuki Inoue ,  Yasuhiro Hida

发明人： Toshimi Kominato ,  Akio Sugita ,  Mikitaka Itoh ,  Yasuyuki Inoue ,  Yasuhiro Hida

IPC分类号： G02B610

CPC分类号： G02B6/12011 ,  G02B6/105 ,  G02B6/12023 ,  G02B6/122 ,  G02B6/2813 ,  G02B2006/121

摘要： An optical waveguide circuit is provided that can reduce or eliminate polarization dependence by reducing or eliminating birefringence. A substrate consists of a silicon substrate, and a cladding and a core are composed of silica-based glass. The core has a multilayer structure composed of a few types of layers with different refractive indices such as first core layers and second core layers stacked in the direction parallel to the substrate. As for the birefringence of the waveguide, the geometrical birefringence caused by the multilayer structure is canceled out by the other birefringence, thereby being able to reduce or eliminate the birefringence of the waveguide.

公开(公告)号：US08538222B2

公开(公告)日：2013-09-17

申请号：US13558120

申请日：2012-07-25

申请人： Takashi Saida ,  Yohei Sakamaki ,  Toshikazu Hashimoto ,  Tsutomu Kitoh ,  Hiroshi Takahashi ,  Masahiro Yanagisawa ,  Senichi Suzuki ,  Yasuhiro Hida ,  Motohaya Ishii ,  Munehisa Tamura

发明人： Takashi Saida ,  Yohei Sakamaki ,  Toshikazu Hashimoto ,  Tsutomu Kitoh ,  Hiroshi Takahashi ,  Masahiro Yanagisawa ,  Senichi Suzuki ,  Yasuhiro Hida ,  Motohaya Ishii ,  Munehisa Tamura

IPC分类号： G02B6/10

CPC分类号： G02B6/12011 ,  G02B6/1228 ,  G02B6/2804

摘要： A planar lightwave circuit is provided which can be easily fabricated by an existing planar-lightwave-circuit fabrication process, which can lower the propagation loss of signal light and which can convert inputted signal light so as to derive desired signal light. A planar lightwave circuit having a core and a clad which are formed on a substrate, has input optical waveguide(s) (111) which inputs signal light, mode coupling part (112) for coupling a fundamental mode of the inputted signal light to a higher-order mode and/or a radiation mode, or mode re-coupling part (113) for re-coupling the higher-order mode and/or the radiation mode to the fundamental mode, and output optical waveguide(s) (114) which outputs signal light. The mode coupling part or the mode re-coupling part is an optical waveguide which has core width and/or height varied continuously.

公开(公告)号：US20120311516A1

公开(公告)日：2012-12-06

申请号：US13558120

申请日：2012-07-25

申请人： Takashi Saida ,  Yohei Sakamaki ,  Toshikazu Hashimoto ,  Tsutomu Kitoh ,  Hiroshi Takahashi ,  Masahiro Yanagisawa ,  Senichi Suzuki ,  Yasuhiro Hida ,  Motohaya Ishii ,  Munehisa Tamura

发明人： Takashi Saida ,  Yohei Sakamaki ,  Toshikazu Hashimoto ,  Tsutomu Kitoh ,  Hiroshi Takahashi ,  Masahiro Yanagisawa ,  Senichi Suzuki ,  Yasuhiro Hida ,  Motohaya Ishii ,  Munehisa Tamura

IPC分类号： G06F17/50

CPC分类号： G02B6/12011 ,  G02B6/1228 ,  G02B6/2804

摘要： A planar lightwave circuit is provided which can be easily fabricated by an existing planar-lightwave-circuit fabrication process, which can lower the propagation loss of signal light and which can convert inputted signal light so as to derive desired signal light. A planar lightwave circuit having a core and a clad which are formed on a substrate, has input optical waveguide(s) (111) which inputs signal light, mode coupling part (112) for coupling a fundamental mode of the inputted signal light to a higher-order mode and/or a radiation mode, or mode re-coupling part (113) for re-coupling the higher-order mode and/or the radiation mode to the fundamental mode, and output optical waveguide(s) (114) which outputs signal light. The mode coupling part or the mode re-coupling part is an optical waveguide which has core width and/or height varied continuously.

公开(公告)号：US20100274541A1

公开(公告)日：2010-10-28

申请号：US12834561

申请日：2010-07-12

申请人： Takashi Saida ,  Yohei Sakamaki ,  Toshikazu Hashimoto ,  Tsutomu Kitoh ,  Hiroshi Takahashi ,  Masahiro Yanagisawa ,  Senichi Suzuki ,  Yasuhiro Hida ,  Motohaya Ishii ,  Munehisa Tamura

发明人： Takashi Saida ,  Yohei Sakamaki ,  Toshikazu Hashimoto ,  Tsutomu Kitoh ,  Hiroshi Takahashi ,  Masahiro Yanagisawa ,  Senichi Suzuki ,  Yasuhiro Hida ,  Motohaya Ishii ,  Munehisa Tamura

IPC分类号： G06F17/10

CPC分类号： G02B6/12011 ,  G02B6/1228 ,  G02B6/2804

摘要： A planar lightwave circuit is provided which can be easily fabricated by an existing planar-lightwave-circuit fabrication process, which can lower the propagation loss of signal light and which can convert inputted signal light so as to derive desired signal light. A planar lightwave circuit having a core and a clad which are formed on a substrate, has input optical waveguide(s) (111) which inputs signal light, mode coupling part (112) for coupling a fundamental mode of the inputted signal light to a higher-order mode and/or a radiation mode, or mode re-coupling part (113) for re-coupling the higher-order mode and/or the radiation mode to the fundamental mode, and output optical waveguide(s) (114) which outputs signal light. The mode coupling part or the mode re-coupling part is an optical waveguide which has core width and/or height varied continuously.

摘要翻译： 提供一种平面光波电路，其可以通过现有的平面光波形电路制造工艺容易地制造，这可以降低信号光的传播损耗，并且其可以转换输入的信号光以便导出期望的信号光。 具有形成在基板上的芯和包层的平面光波电路具有输入信号光的输入光波导（111），用于将输入的信号光的基模耦合到模式耦合部（112） 高阶模式和/或辐射模式或用于将高阶模式和/或辐射模式重新耦合到基模的模式再耦合部分（113），以及输出光波导（114） 输出信号灯。 模式耦合部分或模式重新耦合部分是具有连续变化的芯宽度和/或高度的光波导。

公开(公告)号：US20120304143A1

公开(公告)日：2012-11-29

申请号：US13558200

申请日：2012-07-25

申请人： Takashi Saida ,  Yohei Sakamaki ,  Toshikazu Hashimoto ,  Tsutomu Kitoh ,  Hiroshi Takahashi ,  Masahiro Yanagisawa ,  Senichi Suzuki ,  Yasuhiro Hida ,  Motohaya Ishii ,  Munehisa Tamura

发明人： Takashi Saida ,  Yohei Sakamaki ,  Toshikazu Hashimoto ,  Tsutomu Kitoh ,  Hiroshi Takahashi ,  Masahiro Yanagisawa ,  Senichi Suzuki ,  Yasuhiro Hida ,  Motohaya Ishii ,  Munehisa Tamura

IPC分类号： G06F17/50

CPC分类号： G02B6/12011 ,  G02B6/1228 ,  G02B6/2804

摘要： A planar lightwave circuit is provided which can be easily fabricated by an existing planar-lightwave-circuit fabrication process, which can lower the propagation loss of signal light and which can convert inputted signal light so as to derive desired signal light. A planar lightwave circuit having a core and a clad which are formed on a substrate, has input optical waveguide(s) (111) which inputs signal light, mode coupling part (112) for coupling a fundamental mode of the inputted signal light to a higher-order mode and/or a radiation mode, or mode re-coupling part (113) for re-coupling the higher-order mode and/or the radiation mode to the fundamental mode, and output optical waveguide(s) (114) which outputs signal light. The mode coupling part or the mode re-coupling part is an optical waveguide which has core width and/or height varied continuously.

摘要翻译： 提供一种平面光波电路，其可以通过现有的平面光波形电路制造工艺容易地制造，这可以降低信号光的传播损耗，并且其可以转换输入的信号光以便导出期望的信号光。 具有形成在基板上的芯和包层的平面光波电路具有输入信号光的输入光波导（111），用于将输入的信号光的基模耦合到模式耦合部（112） 高阶模式和/或辐射模式或用于将高阶模式和/或辐射模式重新耦合到基模的模式再耦合部分（113），以及输出光波导（114） 输出信号灯。 模式耦合部分或模式重新耦合部分是具有连续变化的芯宽度和/或高度的光波导。

公开(公告)号：US20080273829A1

公开(公告)日：2008-11-06

申请号：US10587446

申请日：2005-08-01

申请人： Takashi Saida ,  Yohei Sakamaki ,  Toshikazu Hashimoto ,  Tsutomu Kitoh ,  Hiroshi Takahashi ,  Masahiro Yanagisawa ,  Senichi Suzuki ,  Yasuhiro Hida ,  Motohaya Ishii ,  Munehisa Tamura

发明人： Takashi Saida ,  Yohei Sakamaki ,  Toshikazu Hashimoto ,  Tsutomu Kitoh ,  Hiroshi Takahashi ,  Masahiro Yanagisawa ,  Senichi Suzuki ,  Yasuhiro Hida ,  Motohaya Ishii ,  Munehisa Tamura

IPC分类号： G02B6/12

CPC分类号： G02B6/12011 ,  G02B6/1228 ,  G02B6/2804

摘要： A planar lightwave circuit is provided which can be easily fabricated by an existing planar-lightwave-circuit fabrication process, which can lower the propagation loss of signal light and which can convert inputted signal light so as to derive desired signal light. A planar lightwave circuit having a core and a clad which are formed on a substrate, has input optical waveguide(s) (111) which inputs signal light, mode coupling part (112) for coupling a fundamental mode of the inputted signal light to a higher-order mode and/or a radiation mode, or mode re-coupling part (113) for re-coupling the higher-order mode and/or the radiation mode to the fundamental mode, and output optical waveguide(s) (114) which outputs signal light. The mode coupling part or the mode re-coupling part is an optical waveguide which has core width and/or height varied continuously.

摘要翻译： 提供一种平面光波电路，其可以通过现有的平面光波形电路制造工艺容易地制造，这可以降低信号光的传播损耗，并且其可以转换输入的信号光以便导出期望的信号光。 具有形成在基板上的芯和包层的平面光波电路具有输入信号光的输入光波导（111），用于将输入的信号光的基模耦合到模式耦合部（112） 高阶模式和/或辐射模式或用于将高阶模式和/或辐射模式重新耦合到基模的模式再耦合部分（113），以及输出光波导（114） 输出信号灯。 模式耦合部分或模式重新耦合部分是具有连续变化的芯宽度和/或高度的光波导。

公开(公告)号：US08554040B2

公开(公告)日：2013-10-08

申请号：US13558200

申请日：2012-07-25

申请人： Takashi Saida ,  Yohei Sakamaki ,  Toshikazu Hashimoto ,  Tsutomu Kitoh ,  Hiroshi Takahashi ,  Masahiro Yanagisawa ,  Senichi Suzuki ,  Yasuhiro Hida ,  Motohaya Ishii ,  Munehisa Tamura

发明人： Takashi Saida ,  Yohei Sakamaki ,  Toshikazu Hashimoto ,  Tsutomu Kitoh ,  Hiroshi Takahashi ,  Masahiro Yanagisawa ,  Senichi Suzuki ,  Yasuhiro Hida ,  Motohaya Ishii ,  Munehisa Tamura

IPC分类号： G02B6/10

CPC分类号： G02B6/12011 ,  G02B6/1228 ,  G02B6/2804

摘要： A planar lightwave circuit is provided which can be easily fabricated by an existing planar-lightwave-circuit fabrication process, which can lower the propagation loss of signal light and which can convert inputted signal light so as to derive desired signal light. A planar lightwave circuit having a core and a clad which are formed on a substrate, has input optical waveguide(s) (111) which inputs signal light, mode coupling part (112) for coupling a fundamental mode of the inputted signal light to a higher-order mode and/or a radiation mode, or mode re-coupling part (113) for re-coupling the higher-order mode and/or the radiation mode to the fundamental mode, and output optical waveguide(s) (114) which outputs signal light. The mode coupling part or the mode re-coupling part is an optical waveguide which has core width and/or height varied continuously.