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    • 3. 发明授权
    • Spatial switch using an optical beam steering device
    • 使用光束转向装置的空间开关
    • US5966476A
    • 1999-10-12
    • US948943
    • 1997-10-10
    • Wol Yon HwangMin Cheol OhJang Joo Kim
    • Wol Yon HwangMin Cheol OhJang Joo Kim
    • H04B10/2581G02F1/01G02F1/035G02F1/295
    • G02F1/2955G02F1/0147G02F1/035
    • A spatial switch of a simple structure using a "M.times.N" optical beam steering device which operates with M "1.times.N" spatial switches using a phased optical waveguide array. The spatial switch using an optical beam steering device in accordance with the present invention is characterized in that the optical beam steering device includes an optical waveguide phase modulator array, the optical beam steering device is used as a "1.times.N" spatial switch device, and M units of the "1.times.N" spatial switch device are aligned in parallel so that a "M.times.N" spatial switching operation is performed on a plane where a far field diffraction pattern of the "1.times.N" spatial switch device is formed. The spatial switch utilizes the characteristics that if the propagation directions of the lights output from "1.times.N" switches coincide with each other, the far field diffraction patterns formed by the switches converge into the same point.
    • 使用“MxN”光束转向装置的简单结构的空间开关,其使用相控的光波导阵列与M“1×N”空间开关一起操作。 使用根据本发明的光束转向装置的空间开关的特征在于,光束转向装置包括光波导相位调制器阵列,光束转向装置用作“1xN”空间开关装置,M “1xN”空间开关装置的单元并联排列,使得在形成“1xN”空间开关装置的远场衍射图案的平面上执行“M×N”空间切换操作。 空间开关利用如下特性:如果从“1xN”开关输出的光的传播方向彼此一致,则由开关形成的远场衍射图收敛于相同点。
    • 6. 发明授权
    • Back biased electro-optical modulator
    • 背偏置电光调制器
    • US06741762B2
    • 2004-05-25
    • US10010401
    • 2001-12-05
    • Jan GrinbergMin-Cheol OhHarold R. FettermanJoseph Michael
    • Jan GrinbergMin-Cheol OhHarold R. FettermanJoseph Michael
    • G02F1035
    • G02F1/065G02F1/0123G02F1/2255G02F2201/126
    • An electro-optical modulator and a method for biasing a Mach-Zehnder modulator. The inventive modulator includes a layer of material at least partially transparent to electromagnetic energy. A first conductive layer is disposed on a first surface of the layer of at least partially transparent material. A second conductive layer is disposed on a second surface of the layer of at least partially transparent material. A layer of insulating material is disposed on the second conductive layer and a third conductive layer is disposed on the layer of insulating material. In the illustrative application, the modulator is a Mach-Zehnder modulator. A biasing potential is applied to the second conductive layer of the modulator and a modulating voltage is applied across the first and the third conductive layers.
    • 一种电光调制器和用于偏置马赫 - 曾德调制器的方法。 本发明的调制器包括对电磁能至少部分透明的材料层。 第一导电层设置在至少部分透明材料层的第一表面上。 第二导电层设置在至少部分透明材料层的第二表面上。 绝缘材料层设置在第二导电层上,第三导电层设置在绝缘材料层上。 在说明性应用中,调制器是马赫 - 曾德尔调制器。 偏置电位被施加到调制器的第二导电层,并且跨越第一和第三导电层施加调制电压。
    • 9. 发明授权
    • Integrated polymer optical waveguide current sensor
    • 集成聚合物光波导电流传感器
    • US08655115B2
    • 2014-02-18
    • US13322004
    • 2009-05-25
    • Min-Cheol Oh
    • Min-Cheol Oh
    • G02F1/01G02B6/00G01J4/00G02B1/10G02B5/30G01J1/04G01J5/08
    • G01R15/246
    • Provided is an integrated optical current sensor for measuring the magnitude of current. The integrated optical current sensor is fabricated by integrating optical elements, such as a thermo-optic phase modulator, a waveguide polarizer and an optical coupler, on a single substrate. As compared to the known current sensors using optical fibers, the integrated optical current sensor is more compact and enables measurement of current with higher reliability. Provided also is a method for producing current sensor chips in a large scale by using a process for fabricating integrated optical elements.
    • 提供了一种用于测量电流大小的集成光电流传感器。 集成光电流传感器通过在单个衬底上集成诸如热光相位调制器,波导偏振器和光耦合器之类的光学元件来制造。 与使用光纤的已知电流传感器相比,集成光电流传感器更紧凑,能够以更高的可靠性测量电流。 还提供了通过使用用于制造集成光学元件的工艺来大规模生产电流传感器芯片的方法。
    • 10. 发明授权
    • Method of fabricating thermooptic tunable wavelength filter
    • 制作热光可调谐波长滤光片的方法
    • US06303040B1
    • 2001-10-16
    • US09389459
    • 1999-09-03
    • Min Cheol OhMyung Hyun LeeHyung Jong LeeJoo Heon AhnSeon Gyu HanHae Geun Kim
    • Min Cheol OhMyung Hyun LeeHyung Jong LeeJoo Heon AhnSeon Gyu HanHae Geun Kim
    • B44C122
    • G02F1/065G02F1/0147G02F2201/307
    • A method of fabricating a thermooptic tunable wavelength filter of optical communication systems using WDM is provided, which includes the steps of forming a polymer optical waveguide on a semiconductor substrate using a polymer material, forming a polymer Bragg grating on the optical waveguide using O2 RIE and polymer spin coating, and forming a thermooptic tuning electrode over the polymer optical waveguide in which the Bragg grating is integrated. This provides the thermooptical tunable wavelength filter which has very narrow wavelength band width of transmission signal, low crosstalk with optical signals adjacent thereto, stable wavelength tuning characteristic using thermooptic effect and wide tuning ranges. Furthermore, the optical devices using the polymer optical waveguide can be fabricated with low cost. Thus, they have advantages in terms of economy and marketability.
    • 提供了一种制造使用WDM的光通信系统的光波可调波长滤波器的方法,其包括以下步骤:使用聚合物材料在半导体衬底上形成聚合物光波导,使用O 2 RIE在光波导上形成聚合物布拉格光栅; 聚合物旋涂,并在其上集成布拉格光栅的聚合物光波导上形成热光调谐电极。 这提供了光学可调波长滤波器,其具有非常窄的传输信号的波长带宽,与其相邻的光信号的低串扰,使用热光效应和宽调谐范围的稳定的波长调谐特性。 此外,可以以低成本制造使用聚合物光波导的光学装置。 因此,它们在经济和市场化方面具有优势。