METHOD AND APPARATUS PROVIDING REDUCED POLARIZATION-DEPENDENT LOSS

    公开(公告)号:WO2003060597A3

    公开(公告)日:2003-07-24

    申请号:PCT/US2002/041281

    申请日:2002-12-23

    Abstract: A diffraction grating (220) providing reduced polarization dependent loss. The elements of pixels of the diffraction grating are fixed (210) or actuated (215) such that some grating elements (215a-215c) are actuated to correspond to a positive polarization dependent loss and others (215d-215f) are actuated to correspond to a negative polarization dependent loss. The pixels may include multiples of three grating elements or multiples of four grating elements. An electrostatic beam structure providing increased actuation in a direction away from a substrate may be used in a diffraction grating providing reduced polarization dependent loss.

    LIGHT PROCESSOR PROVIDING WAVELENGTH CONTROL AND METHOD FOR SAME
    3.
    发明申请
    LIGHT PROCESSOR PROVIDING WAVELENGTH CONTROL AND METHOD FOR SAME 审中-公开
    光处理器提供波长控制和方法

    公开(公告)号:WO2005047834A1

    公开(公告)日:2005-05-26

    申请号:PCT/US2004/000064

    申请日:2004-01-06

    CPC classification number: G01J1/26 G01J3/42

    Abstract: A light processor (such as a spectrometer) providing wavelength equalization for a sample pathway and a reference pathway by actuation of a light amplitude modulator. A chemometric processor including a light amplitude modulator capable of performing chemical analysis by applying weights to wavelengths of light, thereby reducing the need for electronic post processing.

    Abstract translation: 通过致动光振幅调制器来提供样品路径的波长均衡和参考路径的光处理器(例如光谱仪)。 一种化学计量处理器,包括能够通过对光波长施加加权来执行化学分析的光振幅调制器,从而减少对电子后处理的需要。

    DIFFRACTION GRATING HAVING HIGH THROUGHPUT EFFIENCY
    4.
    发明申请
    DIFFRACTION GRATING HAVING HIGH THROUGHPUT EFFIENCY 审中-公开
    具有高通量效率的衍射光栅

    公开(公告)号:WO2004079410A1

    公开(公告)日:2004-09-16

    申请号:PCT/US2004/000151

    申请日:2004-01-06

    CPC classification number: G02B27/4261 G02B5/1861

    Abstract: A reflective diffraction grating having grooves and ridges and providing high throughput efficiency in the minus-first diffraction order. All but the zeroth diffraction order and the minus-first diffraction order may be prevented from existence by directing the radiation onto the grating at an appropriate angle. The radiation having a TM polarization is eliminated from the zeroth order by destructive interference by appropriate selection of a the groove width of the grating, and radiation having a TE polarization is eliminated from the zeroth order by destructive interference by depositing an overcoat of an appropriate thickness. A dielectric material may be deposited in the grooves.

    Abstract translation: 具有凹槽和脊的反射衍射光栅,并以负第一衍射级提供高通量效率。 通过以适当的角度将辐射引导到光栅上,可以防止除了零级衍射级和负第一衍射级之外的所有衍射级。 具有TM极化的辐射通过适当选择光栅的槽宽度的相消干涉从第零级消除,并且具有TE极化的辐射通过沉积适当厚度的外涂层的破坏性干涉从第零级消除 。 电介质材料可以沉积在凹槽中。

    METHOD AND APPARATUS PROVIDING REDUCED POLARIZATION;DEPENDENT LOSS
    5.
    发明公开
    METHOD AND APPARATUS PROVIDING REDUCED POLARIZATION;DEPENDENT LOSS 审中-公开
    方法和设备保持了减少的偏振相关损耗

    公开(公告)号:EP1459123A2

    公开(公告)日:2004-09-22

    申请号:EP02806509.2

    申请日:2002-12-23

    CPC classification number: G02B26/0808 G02B5/1828

    Abstract: A diffraction grating (220) providing reduced polarization dependent loss. The elements of pixels of the diffraction grating are fixed (210) or actuated (215) such that some grating elements (215a-215c) are actuated to correspond to a positive polarization dependent loss and others (215d-215f) are actuated to correspond to a negative polarization dependent loss. The pixels may include multiples of three grating elements or multiples of four grating elements. An electrostatic beam structure providing increased actuation in a direction away from a substrate may be used in a diffraction grating providing reduced polarization dependent loss.

    DIFFRACTION GRATING HAVING HIGH THROUGHPUT EFFIENCY
    6.
    发明公开
    DIFFRACTION GRATING HAVING HIGH THROUGHPUT EFFIENCY 审中-公开
    具有高吞吐量效率衍射

    公开(公告)号:EP1588196A1

    公开(公告)日:2005-10-26

    申请号:EP04700364.5

    申请日:2004-01-06

    CPC classification number: G02B27/4261 G02B5/1861

    Abstract: A reflective diffraction grating having grooves and ridges and providing high throughput efficiency in the minus-first diffraction order. All but the zeroth diffraction order and the minus-first diffraction order may be prevented from existence by directing the radiation onto the grating at an appropriate angle. The radiation having a TM polarization is eliminated from the zeroth order by destructive interference by appropriate selection of a the groove width of the grating, and radiation having a TE polarization is eliminated from the zeroth order by destructive interference by depositing an overcoat of an appropriate thickness. A dielectric material may be deposited in the grooves.

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