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1. 发明专利

JP2014063058A Spot size converter 审中-公开
标题翻译： SPOT SIZE转换器
公开(公告)号：JP2014063058A
公开(公告)日：2014-04-10
申请号：JP2012208603
申请日：2012-09-21
申请人： Oki Electric Ind Co Ltd , 沖電気工業株式会社
发明人： ONAWA YOSUKE , OKAYAMA HIDEAKI
IPC分类号： G02B6/14 , G02B6/122
摘要： PROBLEM TO BE SOLVED: To provide a spot size converter having low polarization dependence.SOLUTION: A spot size converter has a first optical waveguide core 30, a second optical waveguide core 40, and a third optical waveguide core 50. The spot size converter is also provided with a first bidirectionally coupled region, in which light propagating in a basic mode through the first optical waveguide core and light propagating in an n-th order mode (n is a positive integer) through the second optical waveguide core are coupled, and a second bidirectionally coupled region in which the light propagating in the n-th order mode through the second optical waveguide core and light propagating in the basic mode through the third optical waveguide core are coupled. The first optical waveguide core has a larger cross-sectional area in a plane perpendicular to a propagation direction of light than the second optical waveguide core and the third optical waveguide core.
摘要翻译：要解决的问题：提供具有低偏振依赖性的光斑尺寸转换器。解决方案：光斑尺寸转换器具有第一光波导芯30，第二光波导芯40和第三光波导芯50.光斑尺寸转换器还设置有第一双向耦合区域，其中通过第一光波导芯以基本模式传播的光和通过第二光波导芯以n阶模式传播的光（n为正整数）耦合，并且第二双向耦合区域，其中通过第二光波导芯以n阶模式传播的光和通过第三光波导芯以基本模式传播的光耦合。第一光波导芯在与第二光波导芯和第三光波导芯相比在垂直于光的传播方向的平面中具有较大的横截面面积。

2. 发明专利

JP2014041175A Wavelength selective optical route switching device 审中-公开
标题翻译：波长选择性光学路由交换设备
公开(公告)号：JP2014041175A
公开(公告)日：2014-03-06
申请号：JP2012182037
申请日：2012-08-21
申请人： Oki Electric Ind Co Ltd , 沖電気工業株式会社
发明人： OKAYAMA HIDEAKI
IPC分类号： G02B6/122
CPC分类号： G02B6/27 , G02B6/12007 , G02B6/125 , G02B6/2793
摘要： PROBLEM TO BE SOLVED: To provide a wavelength selective optical route switching device which can be easily formed at low costs and has optical waveguides whose tolerances on thickness and width are in a range that can be met by the present microfabrication technique.SOLUTION: A first optical waveguide 4a and a second optical waveguide 4b are arranged in parallel separated by a center-to-center distance Gc. Thickness and widths of the first optical waveguide and the second optical waveguide and the center-to-center distance are set within ranges that does not cut off an antisymmetric propagation mode, in which a spatial amplitude distribution of optical electric field of TE polarized light in one optical waveguide is antisymmetrically coupled to another optical waveguide and propagates therethrough. The widths of the first and second optical waveguides are set such that; a coupling length for TE polarized light is minimum when the widths of the first and second optical waveguides are set to be greater than the respective thicknesses; or a coupling length for TE polarized light is equal to a coupling length for TM polarized light when the widths are set to be less than the respective thicknesses.
摘要翻译：要解决的问题：提供一种能够以低成本容易地形成并具有光学波导的波长选择性光路由切换装置，其宽度宽度在本发明的微细加工技术可以满足的范围内。解决方案：第一光波导4a和第二光波导4b以中心到中心的距离Gc平行排列。将第一光波导和第二光波导的厚度和宽度以及中心到中心的距离设定在不切断反对称传播模式的范围内，其中TE偏振光的光电场的空间振幅分布在一个光波导与另一个光波导反对称耦合，并通过其传播。第一和第二光波导的宽度被设定为：当第一和第二光波导的宽度被设定为大于相应厚度时，TE偏振光的耦合长度最小; 或者当偏振光束的宽度被设定为小于相应厚度时，TE偏振光的耦合长度等于TM偏振光的耦合长度。

3. 发明专利

JP2013174752A Wavelength selective path switching element 有权
标题翻译：波长选择性路径切换元件
公开(公告)号：JP2013174752A
公开(公告)日：2013-09-05
申请号：JP2012039575
申请日：2012-02-27
申请人： Oki Electric Ind Co Ltd , 沖電気工業株式会社
发明人： OKAYAMA HIDEAKI
IPC分类号： G02B6/12
CPC分类号： G02B6/354 , G02B6/12007 , G02B6/1228 , G02B6/2813 , G02B6/29332
摘要： PROBLEM TO BE SOLVED: To provide a wavelength selective path switching element which can be formed easily and at low costs, and further does not emit light to the outside from an optical waveguide.SOLUTION: An optical waveguide pattern structure including a first optical waveguide 18, a second optical waveguide 20 and an intermediary optical waveguide 16 is formed on a silicon substrate 10. Widths W, Wand W, lengths Land L, and gaps Gand Gof the optical waveguide are set so that light 22 of a first wavelength inputted into the first optical waveguide propagates through the first optical waveguide, the intermediary optical waveguide and the second optical waveguide, is outputted from the second optical waveguide, and propagates through an output waveguide 21 to be outputted therefrom. Light 24 of a second wavelength which propagates through an input waveguide 19 and is inputted into the first optical waveguide 18 is set so as to be outputted from the first optical waveguide.
摘要翻译：要解决的问题：提供一种能够容易且低成本地形成的波长选择路径切换元件，并且不会从光波导向外部发光。解决方案：一种光波导图案结构，包括第一光波导18 在硅衬底10上形成第二光波导20和中间光波导16.宽度W，W和W，长度L，以及光波导的间隙G d和G d被设定为使得第一波长的光22输入到第一光波导通过第一光波导传播，中间光波导和第二光波导从第二光波导输出，并通过输出波导21传播以从其输出。通过输入波导19传播并输入到第一光波导18的第二波长的光24被设定为从第一光波导输出。

4. 发明专利

JP2013156517A Grating element and optical element 有权
标题翻译：光学元件和光学元件
公开(公告)号：JP2013156517A
公开(公告)日：2013-08-15
申请号：JP2012018209
申请日：2012-01-31
申请人： Oki Electric Ind Co Ltd , 沖電気工業株式会社
发明人： OKAYAMA HIDEAKI
IPC分类号： G02B6/122
摘要： PROBLEM TO BE SOLVED: To obtain a grating element without polarization dependence.SOLUTION: A grating element includes an optical waveguide 12 which is constituted of: a clad 14 including a first clad 14a and a second clad 14b having a refractive index larger than that of the first clad, provided on a principal surface 8a of a substrate 8 in this order; and a core 16 provided between the first clad and the second clad and which reflects light with a wavelength λ. The core has regular projections 100L and 100R with a period Λ on both side surfaces 16L and 16R of the core and has a thickness being a length in a direction perpendicular to a principal surface equal to or larger than a width being a length in a direction perpendicular to a light propagation direction and parallel to the principal surface. The projections are arranged in line symmetry to the central axis O of the optical waveguide. The refractive index of a constituent material of the core is larger by 40% or more than that of a constituent material of the first clad. Equivalent refractive indices nTE and nTM of a TE wave and a TM wave on the optical waveguide are matched in a predetermined allowable range.
摘要翻译：要解决的问题：获得没有偏振依赖性的光栅元件。解决方案：光栅元件包括光波导12，光波导12由包括第一包层14a和第二包层14b的包层14构成，折射率大于第一包层，依次设置在基板8的主面8a上; 以及设置在第一包层和第二包层之间并且反射具有波长λ的光的芯16。芯具有在芯的两个侧表面16L和16R上具有周期Λ的规则突起100L和100R，并且具有与垂直于等于或大于沿着方向上的长度的宽度的主表面的方向上的长度的厚度垂直于光传播方向并平行于主表面。突起被布置成与光波导的中心轴线对称。芯的构成材料的折射率比第一包层的构成材料的折射率大40％以上。光波导上的TE波和TM波的等效折射率nTE和nTM在预定的允许范围内匹配。

5. 发明专利

JP2013156512A Grating element and optical element 有权
标题翻译：光学元件和光学元件
公开(公告)号：JP2013156512A
公开(公告)日：2013-08-15
申请号：JP2012018174
申请日：2012-01-31
申请人： Oki Electric Ind Co Ltd , 沖電気工業株式会社
发明人： OKAYAMA HIDEAKI
IPC分类号： G02B6/122 , G02B5/18
摘要： PROBLEM TO BE SOLVED: To obtain a grating element without polarization dependence.SOLUTION: A grating element includes an optical waveguide 12 constituted of a clad 14 provided on the side of a principal surface 8a of a substrate 8, and a core 16 provided in the clad and for converting light with a wavelength λ corresponding to a period λ of regular irregularities C formed in the core into a polarized wave and reflecting it. The clad includes a first clad 14a and a second clad 14b having a refractive index smaller than that of the first clad, provided on the principal surface in this order. The core is provided between the first and second clads, and a material forming the core has a refractive index larger by 40% or more than that of a material forming the first clad. The irregularities are provided on the side surfaces of the core. A formula of Λ=λ/(nTE+nTM) is satisfied, where nTE represents an equivalent refractive index of a TE wave with a wave length λ and nTM represents an equivalent refractive index of a TM wave with a wave length λ.
摘要翻译：要解决的问题：获得没有偏振依赖性的光栅元件。解决方案：光栅元件包括由设置在基板8的主表面8a侧的包层14和设置在基板8的主表面8a的芯16构成的光波导12。并且将用于将形成在芯中的规则凹凸C的周期λ对应的波长λ的光转换为偏振波并将其反射。该包层包括第一覆层14a和第二覆层14b，该第二覆层14b的折射率小于第一覆层的折射率，该第二覆层14b按照该顺序设置在主表面上。芯部设置在第一和第二包层之间，形成芯的材料的折射率大于形成第一包层的材料的折射率的40％以上。在芯的侧面设置有凹凸。满足Λ=λ/（nTE + nTM）的公式，其中nTE表示具有波长λ的TE波的等效折射率，nTM表示具有波长λ的TM波的当量折射率。

6. 发明专利

JP2013064942A Optical element 审中-公开
标题翻译：光学元件
公开(公告)号：JP2013064942A
公开(公告)日：2013-04-11
申请号：JP2011204596
申请日：2011-09-20
申请人： Oki Electric Ind Co Ltd , 沖電気工業株式会社
发明人： OKAYAMA HIDEAKI
IPC分类号： G02B6/122
摘要： PROBLEM TO BE SOLVED: To maintain light transmission of light with a wavelength of 1.49 μm in a practically sufficient level, and suppress sufficiently light transmission of light with a wavelength in a vicinity of 1.30 μm, by significantly reducing a Bragg peak.SOLUTION: An optical element includes a clad 12 formed on a primary side 8a of a substrate 8, and a light waveguide 11 arranged in the clad and composed of a core 18. The light waveguide is formed by connecting a wide width part 14a having a first width and a narrow width part 14b having a second width in series along a light propagation direction. The optical element further includes a grating 14 formed by connecting in series n stages of units U with a length as a first period. The first period of the grating is configured to radiate first light of a first wavelength to the clad and transmit second light of a second wavelength which is longer than the first wavelength, the first and second light being input to the grating.
摘要翻译：要解决的问题：为了保持实际上足够水平的1.49μm波长的光的透光，通过显着降低布拉格峰，抑制具有1.30μm附近的波长的光的充分透光。解决方案：光学元件包括形成在基板8的初级侧8a上的包层12和布置在包层中并由芯18组成的光波导11.光波导通过将宽的宽度部分 14a具有第一宽度和窄宽度部分14b，其具有沿光传播方向串联的第二宽度。光学元件还包括通过串联连接n个单元U的长度作为第一周期而形成的光栅14。光栅的第一周期被配置为将第一波长的第一光辐射到包层并且传输比第一波长长的第二波长的第二光，第一和第二光被输入到光栅。版权所有（C）2013，JPO＆INPIT

7. 发明专利

JP2013064940A Diffraction grating type optical coupler 审中-公开
$Diffraction grating type optical coupler$
标题翻译：衍射光栅类型光耦合器
公开(公告)号：JP2013064940A
公开(公告)日：2013-04-11
申请号：JP2011204594
申请日：2011-09-20
申请人： Oki Electric Ind Co Ltd , 沖電気工業株式会社
发明人： OKAYAMA HIDEAKI
IPC分类号： G02B6/122
摘要： PROBLEM TO BE SOLVED: To provide a diffraction grating type optical coupler that can be easily formed at low cost.SOLUTION: A first diffraction grating 28 is formed by arranging a plurality of sub optical waveguides 24 in parallel on both sides of a part 30 of a silicon optical waveguide 26. A second diffraction grating 32 is formed at a part of the silicon optical waveguide 26. A diffraction grating part 14 is composed of the first diffraction grating and the second diffraction grating. A first optical waveguide loop 16 is connected to one end of the silicon optical waveguide, and a second optical waveguide loop 18 is connected to the other end. The first optical waveguide loop and the second optical waveguide loop are coupled together by an optical waveguide loop coupling part 20. An input/output silicon optical waveguide 22 is connected to the optical waveguide loop coupling part.
摘要翻译：要解决的问题：提供可以容易地以低成本形成的衍射光栅型光耦合器。解决方案：第一衍射光栅28通过在硅光波导26的一部分30的两侧并排布置多个子光波导24而形成。第二衍射光栅32形成在硅的一部分衍射光栅部分14由第一衍射光栅和第二衍射光栅构成。第一光波导环16连接到硅光波导的一端，另一端连接有第二光波导环18。第一光波导环路和第二光波导环路由光波导环路耦合部分20耦合在一起。输入/输出硅光波导22连接到光波导环路耦合部分。版权所有（C）2013，JPO＆INPIT

8. 发明专利

JP2012014028A Optical coupling/branching element 有权
标题翻译：光耦合/分支元件
公开(公告)号：JP2012014028A
公开(公告)日：2012-01-19
申请号：JP2010151620
申请日：2010-07-02
申请人： Oki Electric Ind Co Ltd , 沖電気工業株式会社
发明人： OKAYAMA HIDEAKI
IPC分类号： G02B6/12
CPC分类号： G02B6/12023
摘要： PROBLEM TO BE SOLVED: To achieve polarization independence and to extend a transmitted wavelength range.SOLUTION: An optical coupling/branching element comprises: an input optical waveguide 12; an input-side planar optical waveguide 14; a waveguide array 16; an output-side planar optical waveguide 18; first and second multimode couplers 20 and 22; and first and second output optical waveguides 24 and 26. The first and second multimode couplers are formed to have a size in which a phase difference between fundamental mode light and second-order mode light of the first and second wavelength lights in a connection portion to the first and second output optical waveguides changes by (2i+1)π (where i is an integer of 0 or more) with respect to a phase difference between fundamental mode light and second-order mode light of the first and second wavelength lights in a connection portion to the output-side planar optical waveguide, with respect to TE polarization and TM polarization of the first and second wavelength lights.
摘要翻译：要解决的问题：实现偏振自由度并延长透射波长范围。光耦合/分支元件包括：输入光波导12; 输入侧平面光波导14; 波导阵列16; 输出侧平面光波导18; 第一和第二多模耦合器20和22; 以及第一和第二输出光波导24和26.第一和第二多模耦合器被形成为具有在连接部分中的第一和第二波长光的基模光与二阶模光之间的相位差的大小第一和第二输出光波导相对于第一和第二波长光的基模光和二次模光之间的相位差（2i + 1）π（其中i是0或更大的整数）改变相对于第一和第二波长光的TE偏振和TM偏振的到输出侧平面光波导的连接部分。版权所有（C）2012，JPO＆INPIT

9. 发明专利

JP2010134224A Optical multiplexing/demultiplexing device 审中-公开
标题翻译：光学多路复用/解复用器件
公开(公告)号：JP2010134224A
公开(公告)日：2010-06-17
申请号：JP2008310643
申请日：2008-12-05
申请人： Oki Electric Ind Co Ltd , 沖電気工業株式会社
发明人： OKAYAMA HIDEAKI
IPC分类号： G02B6/12
摘要： PROBLEM TO BE SOLVED: To provide an optical multiplexing/demultiplexing device with superior characteristics using Mach-Zehnder interferometers. SOLUTION: The optical multiplexing/demultiplexing device is equipped, in series, with three or more Mach-Zehnder interferometers 18-24 having deflection waveguide portions 18b-24b and directional coupler portions 18a-24a. Where L 1 and L 2 are optical path lengths for the light propagating a first and a second optical waveguides 14, 16 in the respective Mach-Zehnder interferometers; if L 1 >L 2 in the directional coupler portions, the width of the first optical waveguide is made larger than the second optical waveguide width; if L 2 >L 1 , the width of the second optical waveguide is made larger than the first optical waveguide width. The device includes one or more each of a pair of two successive Mach-Zehnder interferometers where the sum of the inter-field-path retardation Δϕ caused by the optical path difference ΔL and the width difference of the directional coupler portion becomes +2Δϕ or -Δ2ϕ and a pair of two successive Mach-Zehnder interferometers where the sum of their retardation Δϕ becomes 0. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：使用马赫 - 策德尔干涉仪提供具有优异特性的光复用/解复用装置。解决方案：光复用/解复用装置串联配备有三个或多个具有偏转波导部分18b-24b和定向耦合器部分18a-24a的马赫 - 曾德干涉仪18-24。其中L 1 和L 2 是在各个Mach-Zehnder干涉仪中传播第一和第二光波导14,16的光的光程长度; 如果在定向耦合器部分中的L 1 > L 2 ，则使第一光波导的宽度大于第二光波导宽度; 如果L 2 > L 1 ，则使第二光波导的宽度大于第一光波导宽度。该装置包括一对两个连续的马赫 - 策德尔干涉仪中的一个或多个，其中由光程差ΔL引起的场间路径延迟Δφ和定向耦合器部分的宽度差之和变为+2Δφ或 - Δ2φ和一对两个连续的马赫 - 曾德尔干涉仪，其延迟Δφ的和变为0. COPYRIGHT：（C）2010，JPO＆INPIT

10. 发明专利

JP2010102228A Optical resonator, manufacturing method thereof, and optical sensor for fluid 审中-公开
标题翻译：光学谐振器及其制造方法和光学传感器
公开(公告)号：JP2010102228A
公开(公告)日：2010-05-06
申请号：JP2008275312
申请日：2008-10-27
申请人： Oki Electric Ind Co Ltd , 沖電気工業株式会社
发明人： OKAYAMA HIDEAKI
IPC分类号： G02F1/01 , G01N21/41
摘要： PROBLEM TO BE SOLVED: To use transmission light and to easily put materials in and out of an optical resonator.
SOLUTION: This optical resonator 10 resonates light of a selected wavelength from incoming light IN containing a plurality of wavelengths and generates outgoing light OUT. The resonator comprises a first main surface 12a and a second main surface 12b opposing to the first main surface. The resonator also comprises a substrate 12 whose thickness D is a multiple of the wavelength of the outgoing light, first and second highly reflective films 14a and 14b formed on the first and second main surfaces, respectively, and through-holes 16, 16A, 16B, ..., penetrating the first and second highly reflective films.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：使用透射光并容易地将材料放入和流出光学谐振器。解决方案：该光学谐振器10谐振来自包含多个波长的入射光IN的所选波长的光，并产生输出光OUT。谐振器包括与第一主表面相对的第一主表面12a和第二主表面12b。谐振器还包括基板12，其厚度D分别为出射光的波长的倍数，分别形成在第一和第二主表面上的第一和第二高反射膜14a和14b以及通孔16,16A，16B ，...穿透第一和第二高反射膜。版权所有（C）2010，JPO＆INPIT

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