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11.发明授权公开(公告)号：US07310468B2
公开(公告)日：2007-12-18
申请号：US10565012
申请日：2004-07-16
申请人： Shigeo Kittaka , Kazuaki Oya , Keiji Tsunetomo
发明人： Shigeo Kittaka , Kazuaki Oya , Keiji Tsunetomo
CPC分类号： G02F1/3136 , B82Y20/00 , G02B6/1225 , G02F2202/32
摘要： A photonic crystal waveguide and a homogeneous medium waveguide for enabling a steep bend and arrangement at an arbitrary angle with low propagation loss. A photonic crystal waveguide has a core formed by a photonic crystal having periodicity in the Y-direction. Electromagnetic wave is propagated by a band on the Brillouin zone boundary of the photonic band structure of the core. A side face of the core parallel to the Y-direction is in contact with a homogeneous medium having a refractive index of ns, and the condition of λ0/ns>aλ/(λ2/4+a2)0.5 is satisfied when the wavelength in vacuum of the electromagnetic wave is represented by λ0, the period of the photonic crystal is represented by a, and the period in the XZ-plane direction of the wave propagated through the core is represented by λ.
摘要翻译： 一种光子晶体波导和均匀介质波导，用于以低传播损耗以任意角度进行陡峭的弯曲和布置。 光子晶体波导具有由在Y方向上具有周期性的光子晶体形成的核心。 电磁波由核心的光子带结构的布里渊区边界上的带传播。 平行于Y方向的芯的侧面与折射率为n 的折射率的均匀介质接触，并且λ<0 / 当真空中的波长为λ时，满足λλ/（λ2/4 + a 2） 电磁波由λ表示，光子晶体的周期由a表示，并且通过核传播的波的XZ平面方向上的周期由λ表示。
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公开(公告)号：US20070025657A1
公开(公告)日：2007-02-01
申请号：US10558995
申请日：2004-06-04
申请人： Kazuaki Oya , Shigeo Kittaka , Keiji Tsunetomo
发明人： Kazuaki Oya , Shigeo Kittaka , Keiji Tsunetomo
IPC分类号： G02F1/295
CPC分类号： B82Y20/00 , G02B6/1225 , G02F1/31 , G02F2202/32
摘要： An optical path conversion element includes a photonic crystal exhibiting periodicity of refractive index in one direction and using as an incident end face one of end faces substantially parallel with the periodicity direction of refractive index and an exit end face opposite the incident end face, an incident part for passing an incident light through the incident end face such that a propagation light is generated in the photonic crystal by a band on a Brillouin zone boundary, and a device for changing a photonic band structure of the photonic crystal and/or a device for changing a propagation optical path length that is a distance from the incident end face to the exit end face.
摘要翻译： 光路转换元件包括在一个方向上具有折射率周期的光子晶体，并且使用与入射端面相反的与折射率周期方向大致平行的端面中的一个端面和与入射端面相反的出射端面， 用于使入射光通过入射端面的部分，使得通过布里渊区边界上的带在光子晶体中产生传播光，以及用于改变光子晶体的光子带结构的装置和/或用于 改变从入射端面到出射端面的距离的传播光路长度。
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公开(公告)号：US20060140567A1
公开(公告)日：2006-06-29
申请号：US10519817
申请日：2003-07-08
申请人： Shigeo Kittaka , Kazuaki Oya , Masatoshi Nara , Keiji Tsunetomo , Takahiro Asai
发明人： Shigeo Kittaka , Kazuaki Oya , Masatoshi Nara , Keiji Tsunetomo , Takahiro Asai
IPC分类号： G02B6/10
CPC分类号： G02B6/1225 , B82Y20/00 , G02B6/02257 , G02B6/02261 , G02B6/02285 , G02B6/023 , G02B6/02357 , G02B6/02385
摘要： A photonic crystal optical waveguide includes a optical waveguide portion having a core made of a photonic crystal with a structure having a periodic refractive index in at least one direction perpendicular to a propagation direction of guided light and having a uniform refractive index in the propagation direction of the guided light, and a cladding arranged in contact with the core, in order to confine the guided light in the core, and an incident-side phase modulation portion arranged in close proximity or in contact with an incident surface of the core.
摘要翻译： 光子晶体光波导包括光波导部分，该光波导部分具有由光子晶体构成的核心，所述光子晶体具有在垂直于导光的传播方向的至少一个方向上具有周期性折射率的结构，并且在传播方向上具有均匀的折射率 引导光和与芯接触的包层，以便将引导光限制在芯中，以及布置在芯的入射表面附近或接触的入射侧相位调制部分。
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14.发明授权Transmissive diffraction grating, and spectral separation element and spectroscope using the same 失效透射衍射光栅，以及光谱分离元件和使用其的光谱仪公开(公告)号：US07688512B2
公开(公告)日：2010-03-30
申请号：US11901940
申请日：2007-09-19
IPC分类号： G02B5/18
CPC分类号： G02B5/1871 , G01J3/02 , G01J3/0205 , G01J3/18
摘要： A transmissive diffraction grating includes a substrate and a plurality of ridges provided in a mutually parallel manner at constant periodicity p on the substrate. The ridges include a first layer, a second layer (refractive index n2: 2.0-2.5), and a third layer with non-continuous refractive indices, arranged in that order from the substrate outward. The first layer adjacent the substrate, in terms of its refractive index, exhibits a difference of 0.1 or less relative to the substrate. The second layer has a higher refractive index than the first layer and third layer and satisfies the following conditions. For a single ridge, the cross-sectional area S of a cross-section of the second layer perpendicular to the longitudinal direction of said ridge is in the range of 0.75p2k1θ2/(n2−1)
摘要翻译： 透射衍射光栅包括基板和以基板上的恒定周期性p彼此平行的方式设置的多个脊。 脊包括第一层，第二层（折射率n2：2.0-2.5）和具有非连续折射率的第三层，从衬底向外依次布置。 与基板相邻的第一层的折射率相对于基板的差为0.1以下。 第二层具有比第一层和第三层更高的折射率，并且满足以下条件。 对于单个脊，垂直于所述脊的纵向方向的第二层的横截面的横截面积S在0.75p2k1的范围内; 2 /（n2-1）
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公开(公告)号：US07515804B2
公开(公告)日：2009-04-07
申请号：US12001410
申请日：2007-12-11
申请人： Shigeo Kittaka , Keiji Tsunetomo
发明人： Shigeo Kittaka , Keiji Tsunetomo
CPC分类号： G02B6/1225 , B82Y20/00 , G02B6/12007
摘要： An optical waveguide device 1a is configured to include a straight waveguide 2a and bottleneck portions 3a provided in two locations in the longitudinal direction of the waveguide 2a. In the optical waveguide device 1a, light confinement is implemented in all surfaces. This permits provision of an optical waveguide device, wherein a reflector or resonator can be provided in a waveguide using a simple configuration.
摘要翻译： 光波导器件1a被构造成包括在波导2a的纵向方向上设置在两个位置的直线波导2a和瓶颈部分3a。 在光波导装置1a中，在所有表面上实施光限制。 这允许提供光波导器件，其中可以使用简单的构造在波导中提供反射器或谐振器。
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公开(公告)号：US07421176B2
公开(公告)日：2008-09-02
申请号：US10547828
申请日：2004-03-04
申请人： Shigeo Kittaka , Kazuaki Oya , Keiji Tsunetomo
发明人： Shigeo Kittaka , Kazuaki Oya , Keiji Tsunetomo
IPC分类号： G02B6/10
CPC分类号： G02B6/1225 , B82Y20/00
摘要： A waveguide element using a photonic crystal having a refractive index periodicity in one direction is provided with an input portion causing propagation light due to a band on a Brillouin zone boundary within the photonic crystal.
摘要翻译： 使用在一个方向上具有折射率周期性的光子晶体的波导元件设置有由于光子晶体内的布里渊区边界上的带引起的传播光的输入部分。
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公开(公告)号：US07260300B2
公开(公告)日：2007-08-21
申请号：US10547535
申请日：2004-03-04
申请人： Shigeo Kittaka , Kazuaki Oya , Masatoshi Nara , Keiji Tsunetomo , Takahiro Asai
发明人： Shigeo Kittaka , Kazuaki Oya , Masatoshi Nara , Keiji Tsunetomo , Takahiro Asai
IPC分类号： G02B6/10
CPC分类号： G02B6/1225 , B82Y20/00
摘要： In a waveguide element using a photonic crystal including a core formed of a photonic crystal having a refractive index periodicity in at least two directions perpendicular to a propagation direction of an electromagnetic wave and a cladding arranged in contact with the core in order to confine the electromagnetic wave in the core, an incident side phase modulation portion is provided for allowing an electromagnetic wave that is coupled to a band on or near a Brillouin zone boundary in a photonic band structure in the core and propagates in the core to enter the core.
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公开(公告)号：US06968096B2
公开(公告)日：2005-11-22
申请号：US10623448
申请日：2003-07-18
CPC分类号： G02B6/12014 , B82Y20/00 , G02B6/12007 , G02B6/1225 , G02B6/29328
摘要： A diffraction device using a photonic crystal includes a diffraction grating, which has a period and periodically divides electromagnetic waves, and an input medium and an output medium, which contact the diffraction grating. The input medium is air, and the output medium is a one-dimensional layer having a periodic characteristic in a single direction (Z axis direction). The photonic crystal is formed by a periodic multilayer film having a period corresponding to the sum of the thickness of a first substance and the thickness of a second substance, which are superimposed. The diffraction device drastically decreases the resolution corresponding to the difference of the separated frequencies.
摘要翻译： 使用光子晶体的衍射装置包括具有周期性地周期性地划分电磁波的衍射光栅以及与衍射光栅接触的输入介质和输出介质。 输入介质是空气，输出介质是在单一方向（Z轴方向）上具有周期特性的一维层。 光子晶体由周期性多层膜形成，其周期对应于第一物质的厚度和第二物质的厚度的总和。 衍射装置大大降低了分离频率差异的分辨率。
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19.发明申请TRANSMISSION TYPE POLARIZING ELEMENT, AND COMPOSITE POLARIZING PLATE USING THE ELEMENT 审中-公开变速箱类型偏振元件和使用元件的复合极化板公开(公告)号：US20090316262A1
公开(公告)日：2009-12-24
申请号：US12309718
申请日：2007-06-26
IPC分类号： G02B5/30
CPC分类号： G02B5/3066 , G02B5/3041 , G02F1/133528
摘要： A transmission type polarizing element 1 includes a dielectric substrate 3 having a structure in which a plurality of ridges 2 with an angle section are arranged parallel to each other on one side of the dielectric substrate 3, a thin film 4 that is made of a light absorbing substance and formed on the surfaces of the plurality of ridges 2 with an angle section, and a first dielectric substance layer 5 covering the surface of the thin film 4 that faces away from the dielectric substrate 3. When light is incident perpendicularly on the dielectric substrate 3, this transmission type polarizing element 1 transmits a TM polarizing component of the incident light whose magnetic field vibrates in the same direction as the longitudinal direction of the ridges 2 and absorbs a TE polarizing component of the incident light whose electric field vibrates in the same direction as the longitudinal direction of the ridges 2. Thus, a transmission type polarizing element that reduces return light, has high durability, and is capable of being used as a polarizing plate can be provided with a simple configuration.
摘要翻译： 透射型偏振元件1包括电介质基板3，该电介质基板3具有多个在电介质基板3的一侧上具有彼此平行的多个脊角2的结构，由光形成的薄膜4 吸收物质并以角度部分形成在多个脊部2的表面上;以及第一介电物质层5，其覆盖薄膜4的远离电介质基板3的表面。当光垂直入射在电介质上时 基板3，透射型偏振光元件1将与磁场2的长度方向相同方向的磁场振动的入射光的偏振光分量透过，吸收电场振动的入射光的TE偏光分量 与脊2的纵向相同的方向。因此，减少返回光的透射型偏振元件具有 高耐久性，并且能够用作偏振片的结构可以具有简单的结构。
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20.发明申请Transmissive diffraction grating, and spectral separation element and spectroscope using the same 失效透射衍射光栅，以及光谱分离元件和使用其的光谱仪公开(公告)号：US20080074748A1
公开(公告)日：2008-03-27
申请号：US11901940
申请日：2007-09-19
IPC分类号： G02B5/18
CPC分类号： G02B5/1871 , G01J3/02 , G01J3/0205 , G01J3/18
摘要： A transmissive diffraction grating includes a substrate and a plurality of ridges provided in a mutually parallel manner at constant periodicity p on the substrate. The ridges include a first layer, a second layer (refractive index n2: 2.0-2.5), and a third layer with non-continuous refractive indices, arranged in that order from the substrate outward. The first layer adjacent the substrate, in terms of its refractive index, exhibits a difference of 0.1 or less relative to the substrate. The second layer has a higher refractive index than the first layer and third layer and satisfies the following conditions. For a single ridge, the cross-sectional area S of a cross-section of the second layer perpendicular to the longitudinal direction of said ridge is in the range of 0.75p2k1θ2/(n2−1)
摘要翻译： 透射衍射光栅包括基板和以基板上的恒定周期性p彼此平行的方式设置的多个脊。 脊包括第一层，第二层（折射率n <2> 2.0-2.5）以及具有非连续折射率的第三层，从衬底向外按顺序排列。 与基板相邻的第一层的折射率相对于基板的差为0.1以下。 第二层具有比第一层和第三层更高的折射率，并且满足以下条件。 对于单个脊，垂直于所述脊的纵向方向的第二层的横截面的横截面积S在0.75p 2的范围内< （n 2-2）
2 θ2是衍射光栅面上的入射角，用弧度单位表示，常数k <1 SUB>为1.1。 第二层的厚度d 2 N在0.70pk 2的范围内，在第二层的厚度d 2 -1）<1.30PK 2 /（n2-2-1），其中， 常数k <2>为0.69。
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