Laser vibrometry with coherent detection
    1.
    发明申请
    Laser vibrometry with coherent detection 有权
    激光振动测量与相干检测

    公开(公告)号:US20050185191A1

    公开(公告)日:2005-08-25

    申请号:US11055547

    申请日:2005-02-09

    CPC classification number: G01H9/00 G01H9/004

    Abstract: An optical system provides information about tangential vibration components of a surface at remote location. The optical system includes a light source assembly that emits first and second beams, each having one or more wavelengths and one or two polarizations. The first and second beams are directed to the interrogated surface. A detector system is positioned to detect a third beam formed by at least a portion of the first and second beams being reflected from the interrogated surface. The first, second and third beams having incident and reflection angles relative to the interrogated surface that do not lay in a same plane. The detector system positioned remotely from the interrogated surface, and providing information on a phase change in the third beam relative to the first and second beam. The phase change is indicative of at least one surface vibration vector component of the interrogated surface. The detector system is a 90 degree optical hybrid balanced detector with four photodiodes.

    Abstract translation: 光学系统提供关于远程位置处的表面的切向振动分量的信息。 光学系统包括发射第一和第二光束的光源组件,每个光束具有一个或多个波长和一个或两个偏振。 第一和第二光束被引导到被询问的表面。 检测器系统被定位成检测由被询问的表面反射的第一和第二光束的至少一部分形成的第三光束。 第一,第二和第三光束具有相对于被询问的表面的入射角和反射角度,其不处于同一平面内。 检测器系统远离询问的表面定位,并且提供关于第三束相对于第一和第二光束的相位变化的信息。 相变表示询问表面的至少一个表面振动矢量分量。 检测器系统是具有四个光电二极管的90度光学混合平衡检测器。

    Coherent optical detector and coherent communication system and method
    3.
    发明申请
    Coherent optical detector and coherent communication system and method 有权
    相干光检测器和相干通信系统及方法

    公开(公告)号:US20070274733A1

    公开(公告)日:2007-11-29

    申请号:US11695920

    申请日:2007-04-03

    Abstract: An optical device is provided with first and second inputs. A first coupler coupled is coupled to the first input and produces at least a first and second output. A second coupler is coupled to the second input and produces at least a first and second output. A third coupler is coupled to the first output of the first coupler and to the first output of the second coupler. A fourth coupler is coupled to the second output of the first coupler and to the second output of the second coupler. First and second crossing waveguides are provided with an angle selected to minimize crosstalk and losses between the first and second cross waveguides. The first crossing waveguide connects one of the first or second outputs from the first coupler with an input of the fourth coupler. The second crossing waveguide connects one of the first or second outputs from the second coupler with an input of the third coupler. A first phase shifter is coupled to the first and second waveguides. The first and second waveguides connect one of the outputs of the first or second coupler and one of the inputs of the third or fourth couplers. The first, second, third and fourth couplers, the two crossing waveguides and the phase shifter are each formed as part of a single planar chip made of an electro-optical material.

    Abstract translation: 光学装置设置有第一和第二输入。 耦合的第一耦合耦合到第一输入并且产生至少第一和第二输出。 第二耦合器耦合到第二输入并且产生至少第一和第二输出。 第三耦合器耦合到第一耦合器的第一输出端和第二耦合器的第一输出端。 第四耦合器耦合到第一耦合器的第二输出端和第二耦合器的第二输出端。 第一和第二交叉波导具有被选择的角度,以最小化第一和第二交叉波导之间的串扰和损耗。 第一交叉波导将来自第一耦合器的第一或第二输出中的一个与第四耦合器的输入连接。 第二交叉波导将来自第二耦合器的第一或第二输出中的一个与第三耦合器的输入连接。 第一移相器耦合到第一和第二波导。 第一和第二波导连接第一或第二耦合器的输出之一和第三或第四耦合器的输入之一。 第一,第二,第三和第四耦合器,两个交叉波导和移相器各自形成为由电光材料制成的单个平面芯片的一部分。

    Integrated coherent optical detector
    4.
    发明申请
    Integrated coherent optical detector 有权
    集成相干光检测器

    公开(公告)号:US20070140613A1

    公开(公告)日:2007-06-21

    申请号:US11672372

    申请日:2007-02-07

    CPC classification number: G02B6/4225

    Abstract: The present invention provides an integrated device and a method of its fabrication and use. Two parts of the device each having an electronic circuit are aligned adjacent to each other with an accuracy of at least 1 micron. An alignment system includes two parts: a first part integrated with the first electronic circuit of the integrated device on the first substrate and a second part integrated with the second electronic circuit of the integrated device on the second substrate. The second part of alignment system includes at least one photodiode. The maximal value of the photodiode current indicates the best alignment of two parts of the integrated device. In one embodiment the integrated device is a coherent optical detector for high speed optical communications and chemical sensing. In another embodiment the integrated optical device is a coherent optical detector operating in two polarization states of light.

    Abstract translation: 本发明提供了一种集成装置及其制造和使用方法。 每个具有电子电路的装置的两个部分以至少1微米的精度相互对准。 对准系统包括两部分:与第一基板上的集成装置的第一电子电路集成的第一部分和与第二基板上的集成装置的第二电子电路集成的第二部分。 对准系统的第二部分包括至少一个光电二极管。 光电二极管电流的最大值表示集成器件的两个部分的最佳对准。 在一个实施例中,集成器件是用于高速光通信和化学感测的相干光检测器。 在另一个实施例中,集成光学装置是以两种偏振光状态工作的相干光学检测器。

    Coherent photothermal interferometric spectroscopy system and method for chemical sensing
    6.
    发明申请
    Coherent photothermal interferometric spectroscopy system and method for chemical sensing 有权
    相干光热干涉光谱系统和化学感测方法

    公开(公告)号:US20050105099A1

    公开(公告)日:2005-05-19

    申请号:US10947640

    申请日:2005-01-13

    Abstract: A photo-thermal, interferometric spectroscopy system is disclosed that provides information about a chemical at a remote location. A first light source assembly is included that emits a first beam. The first beam has one or more wavelengths that interact with the chemical and change a refractive index of the chemical. A second laser produces a second beam. The second beam interacts with the chemical resulting in a third beam with a phase change that corresponds with the change of the refractive index of the chemical. A detector system is positioned remote from the chemical to receive at least a portion of the third beam. The detector system provides information on a phase change in the third beam relative to the second beam that is indicative of at least one of, absorption spectrum and concentration of the chemical.

    Abstract translation: 公开了一种光热干涉光谱系统,其提供关于远程位置处的化学物质的信息。 包括发射第一光束的第一光源组件。 第一光束具有与化学物质相互作用并改变化学物质折射率的一种或多种波长。 第二激光器产生第二光束。 第二束与化学物质相互作用,导致具有与化学物质的折射率变化相对应的相变的第三光束。 检测器系统定位成远离化学品以接收第三束的至少一部分。 检测器系统提供关于相对于第二光束的第三光束相位变化的信息,其指示化学品的吸收光谱和浓度中的至少一个。

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