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    Photonic crystal optical waveguide
    1.
    发明申请
    Photonic crystal optical waveguide 审中-公开
    光子晶体光波导

    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。

    Optical element and spectroscopic device using the same
    2.
    发明授权
    Optical element and spectroscopic device using the same 失效
    光学元件和使用其的分光装置

    公开(公告)号：US07009701B2

    公开(公告)日：2006-03-07

    申请号：US10367814

    申请日：2003-02-19

    申请人： Shigeo Kittaka ,  Masatoshi Nara ,  Tatsuhiro Nakazawa ,  Kazuaki Oya ,  Keiji Tsunetomo

    发明人： Shigeo Kittaka ,  Masatoshi Nara ,  Tatsuhiro Nakazawa ,  Kazuaki Oya ,  Keiji Tsunetomo

    IPC分类号： G01J3/28

    CPC分类号： G02B6/29362 ,  B82Y20/00 ,  G02B6/1225

    摘要： An optical element according to the invention constituted by a multilayer structure having a periodic structural portion as at least one region constituted by repetition of a predetermined period, wherein an end surface of the multilayer structure not parallel to layer surfaces of the multilayer structure is used as a light input surface whereas one or each of opposite surfaces of the multilayer structure parallel to the layer surfaces is used as a light output surface. There is an intermediate layer between a medium and a surface of the multilayer structure, the intermediate layer having a refractive index less than the refractive index of the medium. The periodic structural portion of the multilayer structure can be regarded as a one-dimensional photonic crystal. Refracted light from the one-dimensional photonic crystal has good directivity and the direction of the refracted light has strong dependence on wavelength. When this wavelength dependence property is used, a spectroscopic device or a polarized light separating device of high resolution can be achieved without increase in device size.

    摘要翻译： 根据本发明的光学元件由具有周期性结构部分的多层结构构成，所述多层结构具有作为由重复预定周期构成的至少一个区域，其中不与多层结构的层表面平行的多层结构的端面用作 光输入表面，而与层表面平行的多层结构的相对表面中的一个或每个被用作光输出表面。 在多层结构的介质和表面之间存在中间层，中间层的折射率小于介质的折射率。 多层结构的周期性结构部分可以被认为是一维光子晶体。 来自一维光子晶体的折射光具有良好的方向性，并且折射光的方向对波长具有很强的依赖性。 当使用这种波长依赖性时，可以实现高分辨率的分光装置或偏振光分离装置，而不增加装置尺寸。

    Waveguide element using photonic crystal
    4.
    发明申请
    Waveguide element using photonic crystal 失效
    使用光子晶体的波导元件

    公开(公告)号：US20060078263A1

    公开(公告)日：2006-04-13

    申请号：US10547535

    申请日：2004-03-04

    申请人： Shigeo Kittaka ,  Kazuaki Oya ,  Masatoshi Nara ,  Takahiro Asai

    发明人： Shigeo Kittaka ,  Kazuaki Oya ,  Masatoshi Nara ,  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.

    摘要翻译： 在使用光子晶体的波导元件中，所述光子晶体包括由垂直于电磁波的传播方向的至少两个方向的折射率周期性的光子晶体形成的核和与芯接触的包层，以限制电磁 提供入射侧相位调制部分，用于允许耦合到核心中的光子带结构中的布里渊区边界上或附近的带的电磁波，并且在核心中传播以进入核心。

    Optical element using one-dimensional photonic crystal and spectroscopic device using the same
    5.
    发明授权
    Optical element using one-dimensional photonic crystal and spectroscopic device using the same 失效
    使用一维光子晶体的光学元件和使用其的分光装置

    公开(公告)号：US07068903B2

    公开(公告)日：2006-06-27

    申请号：US10438827

    申请日：2003-05-16

    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 ,  G02B6/12007

    摘要： An optical element, composed of an one-dimensional photonic crystal of a triangular prism shape and a multilayer film and a phase modulation unit are used together, with the phase modulation unit adjacent or abutting to a light input end surface of the optical element. Input light is phase-modulated by the phase modulation unit in the same period and direction as those of photonic crystal so that only specific high-order band light can be propagated through the optical element. When this optical element is formed in an optical waveguide, a small-size spectroscopic device having high resolving power can be provided.

    摘要翻译： 将由三角形棱镜形状的一维光子晶体和多层膜构成的光学元件和相位调制单元一起使用，相位调制单元与光学元件的光输入端面相邻或邻接。 输入光在与光子晶体相同的周期和方向上由相位调制单元进行相位调制，使得只有特定的高阶波段光能够通过光学元件传播。 当该光学元件形成在光波导中时，可以提供具有高分辨能力的小尺寸分光装置。

    Optical element
    6.
    发明授权
    Optical element 失效
    光学元件

    公开(公告)号：US06914715B2

    公开(公告)日：2005-07-05

    申请号：US10375099

    申请日：2003-02-28

    申请人： Tatsuhiro Nakazawa ,  Shigeo Kittaka ,  Kazuaki Oya ,  Keiji Tsunetomo ,  Masatoshi Nara

    发明人： Tatsuhiro Nakazawa ,  Shigeo Kittaka ,  Kazuaki Oya ,  Keiji Tsunetomo ,  Masatoshi Nara

    IPC分类号： G02B6/12 ,  G02B5/18 ,  G02B6/122 ,  G02F1/00 ,  G02B6/10 ,  G02B6/26

    CPC分类号： B82Y20/00 ,  G02B6/1225

    摘要： An optical element according to the invention uses a thin film-like two-dimensional photonic crystal having a structure of periodic repetition in two directions perpendicular to each other. When the two periodic directions are Y-axis and Z-axis directions, opposite surfaces of the photonic crystal structure perpendicular to the Z-axis direction and parallel to the Y-axis direction are used as a light input surface and a light output surface respectively. The direction of movement of light rays incident onto the light input surface is decided so that it is parallel to the YZ plane and inclined at a predetermined inclination angle to the Z-axis direction.

    摘要翻译： 根据本发明的光学元件使用在彼此垂直的两个方向上具有周期性重复的结构的薄膜状二维光子晶体。 当两个周期方向是Y轴和Z轴方向时，垂直于Z轴方向并平行于Y轴方向的光子晶体结构的相对表面分别用作光输入表面和光输出表面 。 决定入射到光输入面上的光线的移动方向，使其平行于YZ平面并以与Z轴方向成预定倾斜角倾斜。

    Optical element
    7.
    发明授权
    Optical element 失效
    光学元件

    公开(公告)号：US06825963B2

    公开(公告)日：2004-11-30

    申请号：US10347266

    申请日：2003-01-21

    申请人： Shigeo Kittaka ,  Kazuaki Oya ,  Masatoshi Nara

    发明人： Shigeo Kittaka ,  Kazuaki Oya ,  Masatoshi Nara

    IPC分类号： G02F100

    CPC分类号： B82Y20/00 ,  G02B6/1225

    摘要： In the invention, light incident onto an end surface of one-dimensional photonic crystal is phase-modulated in the same period and direction as those of the photonic crystal to thereby propagate only specific high-order band light in the photonic crystal. That is, a phase modulation unit for generating phase-modulated wave having the same period as that of the periodic structure is disposed adjacent or close to a light incident surface of the periodic structure.

    摘要翻译： 在本发明中，入射到一维光子晶体的端面上的光在与光子晶体相同的周期和方向上进行相位调制，从而仅传播光子晶体中的特定高阶带状光。 也就是说，用于产生与周期性结构具有相同周期的相位调制波的相位调制单元邻近或靠近周期性结构的光入射表面。

    Photonic crystal waveguide, homogeneous medium waveguide, and optical device
    9.
    发明授权
    Photonic crystal waveguide, homogeneous medium waveguide, and optical device 失效
    光子晶体波导，均匀介质波导和光学器件

    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

    IPC分类号： G02B6/10 ,  G02B6/12 ,  G02B6/26

    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。

    Optical path conversion element
    10.
    发明申请
    Optical path conversion element 审中-公开
    光路转换元件

    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。