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    Buried back reflector
    1.
    发明授权
    Buried back reflector 有权

    公开(公告)号：US12001120B1

    公开(公告)日：2024-06-04

    申请号：US17556323

    申请日：2021-12-20

    Applicant: HyperLight Corporation

    Inventor： Mian Zhang ,  Kevin Luke ,  Prashanta Kharel ,  Christian Reimer ,  Lingyan He

    IPC: G02F1/313

    CPC classification number: G02F1/313 ,  G02F2201/302 ,  G02F2201/34 ,  G02F2202/101 ,  G02F2202/20

    Abstract: An optical device including a plurality of electrodes, an electro-optic component, an optical grating, and a buried back reflector is described. The electro-optic component includes at least one optical material exhibiting an electro-optic effect. The optical grating is optically coupled with the electro-optic component. In some embodiments, the optical grating includes a vertical optical grating coupler. The buried back reflector is optically coupled with the optical grating. The buried back reflector is configured to increase a coupling efficiency of the optical grating to an out-of-plane optical mode and configured to reduce a performance perturbation to the plurality of electrodes. The buried back reflector may include a metal layer having a thickness of at least thirty nanometers and not more than five hundred nanometers.

    Optical device
    2.
    发明授权
    Optical device 有权

    公开(公告)号：US11953726B2

    公开(公告)日：2024-04-09

    申请号：US17471687

    申请日：2021-09-10

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： Kazuki Nakamura ,  Yasuhisa Inada

    IPC: G02B6/124 ,  G01S7/481 ,  G01S17/89 ,  G02B6/12 ,  G02F1/295

    CPC classification number: G02B6/124 ,  G01S7/4817 ,  G01S17/89 ,  G02B6/12033 ,  G02F1/295 ,  G02B2006/12104 ,  G02F2201/302

    Abstract: An optical device includes a first waveguide extending in a first direction and a second waveguide connected to the first waveguide. The second waveguide includes a first mirror, a second mirror, and an optical waveguide layer. At least either the first waveguide or the second waveguide has one or more gratings in a part of a connection region in which the first mirror, the second mirror, and the first waveguide overlap one another when seen from an angle parallel with a direction perpendicular to a first reflecting surface of the first mirror. The one or more gratings is at a distance that is longer than at least either a thickness of the first mirror or a thickness of the second mirror in the first direction from an end of the first mirror or the second mirror that is in the connection region.

    HIGH PERFORMANCE BACKLIGHT DEVICE USING PHOTONIC INTEGRATED CIRCUITS
    3.
    发明公开
    HIGH PERFORMANCE BACKLIGHT DEVICE USING PHOTONIC INTEGRATED CIRCUITS 审中-公开

    公开(公告)号：US20230194925A1

    公开(公告)日：2023-06-22

    申请号：US17985063

    申请日：2022-11-10

    Applicant: Meta Platforms Technologies, LLC

    Inventor： Zhimin Shi ,  James Ronald Bonar ,  Wanli Chi

    IPC: G02F1/13357 ,  G02B27/01

    CPC classification number: G02F1/133605 ,  G02F1/133606 ,  G02B27/0172 ,  G02F2201/05 ,  G02F2201/302 ,  G02F2201/38

    Abstract: Embodiments of the present disclosure relate to a high performance backlight device with photonic integrated circuits. The backlight device includes a light source assembly, a multi-mode slab waveguide, and an out-coupling assembly. The light source assembly includes one or more light sources that generate light in accordance with emission instructions, and a de-speckling mechanism that conditions the generated light to mitigate speckle. The multi-mode slab waveguide in-couples the conditioned light and expands the in-coupled conditioned light in two dimensions to form a homogenous area of conditioned light within a region of the multi-mode slab waveguide. The out-coupling assembly out-couples the conditioned light from the region in a direction normal to the two dimensions, wherein a light modulation layer forms an image from the out-coupled conditioned light.

    Metal-insulator-semiconductor devices based on surface plasmon polaritons
    8.
    发明授权
    Metal-insulator-semiconductor devices based on surface plasmon polaritons 有权
    基于表面等离子体激元的金属绝缘体半导体器件

    公开(公告)号：US09397241B2

    公开(公告)日：2016-07-19

    申请号：US14563780

    申请日：2014-12-08

    Applicant: University of Ottawa

    Inventor： Pierre Simon Joseph Berini ,  Chengkun Chen

    IPC: G02B6/34 ,  H01L31/0232 ,  H01L31/18 ,  H01L31/0236 ,  G02B6/26 ,  G02F1/025 ,  G02F1/17 ,  G02B6/122 ,  G02B6/124 ,  G02F1/015

    CPC classification number: H01L31/02327 ,  G02B6/1226 ,  G02B6/124 ,  G02B6/26 ,  G02B6/266 ,  G02B6/34 ,  G02F1/025 ,  G02F1/17 ,  G02F2001/0152 ,  G02F2201/302 ,  G02F2202/10 ,  G02F2203/10 ,  H01L31/0232 ,  H01L31/0236 ,  H01L31/02363 ,  H01L31/02366 ,  H01L31/18 ,  Y02E10/50

    Abstract: Apparatus and techniques are presented such as can be used for electro-optic modulation and detection or other applications. For example, an optical metal grating is disposed on a thin metal film to couple light from broadside to the metal film as surface plasmon-polariton waves; below the metal film is located a thin insulating layer and a doped semiconductor region forming a metal-insulator-semiconductor structure. The device can be configured to operate as a reflection or transmission modulator, or as a photodetector, for example. Modulating the voltage applied to the metal-insulator-semiconductor structure modulates the carrier concentration in the semiconductor near the insulating layer, which modulates the refractive index of the semiconductor in this region, thus modulating the coupling efficiency to the surface plasmon-polaritons, thus modulating the reflectance and transmittance of the device. Modulated incident light produces a modulated photocurrent under bias which may be detected using electronics.

    Abstract translation: 提出了诸如可用于电光调制和检测或其它应用的装置和技术。 例如，在金属薄膜上设置光学金属光栅，将来自宽边的光作为表面等离子体 - 极化子波耦合到金属膜; 在金属膜下方设有形成金属 - 绝缘体 - 半导体结构的薄绝缘层和掺杂半导体区域。 该装置可以被配置为例如作为反射或传输调制器或者作为光电检测器来操作。 对施加到金属 - 绝缘体 - 半导体结构的电压的调制调制半导体附近的半导体附近的载流子浓度，其调节该区域中的半导体的折射率，从而调制与表面等离子体激元的耦合效率，从而调制 器件的反射率和透射率。 调制的入射光在偏置下产生调制光电流，其可以使用电子元件检测。

    Optical modulator including waveguide grating structure and multiple quantum well layer
    9.
    发明申请
    Optical modulator including waveguide grating structure and multiple quantum well layer 有权

    公开(公告)号：US20090034899A1

    公开(公告)日：2009-02-05

    申请号：US11888032

    申请日：2007-07-30

    Applicant: David Fattal ,  Michael M. Sigalas ,  Shih-Yuan Wang

    Inventor： David Fattal ,  Michael M. Sigalas ,  Shih-Yuan Wang

    IPC: G02F1/295

    CPC classification number: G02F1/01708 ,  B82Y20/00 ,  G02F1/295 ,  G02F2201/302

    Abstract: An optical modulator and related methods are described. In accordance with one embodiment, the optical modulator comprises a horizontal waveguide grating structure (WGS) receiving an incident radiation beam propagating in a non-horizontal direction. The WGS includes a horizontal waveguiding layer along which a lateral propagation mode is guided, the lateral propagation mode having a vertically extending mode profile. The optical modulator further comprises a multiple quantum well (MQW) layer sufficiently proximal to the horizontal waveguiding layer to be within a vertical extent of the mode profile of the lateral propagation mode. The optical modulator further comprises an electric field source applying a time-varying electric field to the MQW layer. The optical modulator modulates the incident radiation beam according to the time-varying electric field to generate a modulated radiation beam propagating in one of a transmitted direction and a reflected direction.

    Tunable optical integrated element using liquid crystal as active layer
    10.
    发明授权
    Tunable optical integrated element using liquid crystal as active layer 失效
    可调谐光学集成元件采用液晶作为活性层

    公开(公告)号：US07209212B2

    公开(公告)日：2007-04-24

    申请号：US10940664

    申请日：2004-09-15

    Applicant: Wei-Ching Chuang ,  Ruey-Fang Shyu ,  Hsiao-Ping Liang ,  Kun-Yi Lee

    Inventor： Wei-Ching Chuang ,  Ruey-Fang Shyu ,  Hsiao-Ping Liang ,  Kun-Yi Lee

    IPC: G02F1/13

    CPC classification number: G02F1/1326 ,  G02F2201/302 ,  G02F2203/055

    Abstract: The present invention discloses a tunable optical integrated element using liquid crystal as an active layer, which is applied to filters, couplers or optical add/drop multiplexer. The present invention includes a layer of liquid crystal as an active layer, a first waveguide with grating and a second waveguide, an isolation layer, a pair of electrodes. By applying the external voltage to control the direction of the liquid crystal, the refractive index of the waveguide changes in accordance with the modulation of the electric field. Thus invention has the features of simple structure, easy assembling, lower cost and integrating ability.

    Abstract translation: 本发明公开了一种使用液晶作为有源层的可调谐光学集成元件，其被应用于滤波器，耦合器或光分插复用器。 本发明包括作为有源层的液晶层，具有光栅的第一波导和第二波导，隔离层，一对电极。 通过施加外部电压来控制液晶的方向，波导的折射率根据电场的调制而变化。 因此本发明具有结构简单，组装方便，成本低，集成能力强的特点。

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