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    • 2. 发明申请
    • DEVICE AND METHODS UTILIZING OPTICAL WAVEGUIDE EMBEDDED BLAZED REFRACTIVE GRATINGS
    • 使用光波形嵌入式BLAZED REFRACTIVE GRATINGS的器件和方法
    • WO2006053444A1
    • 2006-05-26
    • PCT/CA2005/001769
    • 2005-11-22
    • MCMASTER UNIVERSITYYANG, ChunXU, Chang-Qing
    • YANG, ChunXU, Chang-Qing
    • G02B6/24G02B6/34G01J3/18
    • G02B6/4215G01J3/02G01J3/0205G01J3/0229G01J3/0256G01J3/1895G02B6/2852G02B6/29323
    • In a broad aspect, the invention is an optical device that comprises an optical waveguide having a blazed Bragg grating such that at least a portion of the light coupled from a guided mode into radiation light beam or beams. The light outcoupled by the blazed fiber grating is focused onto a intermediate image on an intermediate image plane at a first predetermined position peculiarly depending on the wavelength of the light and the effective refractive index of the guided mode from which the light is coupled. The invention may comprise a spatial light modulator placed at the intermediate image plane which serves to control phase and amplitude components of the light beam or beams. More significantly, the invention further comprises a final focusing component which may be a lens used to focus the light beam exiting the spatial light modulator onto a final image on small area such that light intensity is increased and thereby the detection sensitivity is improved. The invention furthermore comprises a light receiver which could be a photodetector or a photodetector array used to detect the final image.
    • 在广泛的方面,本发明是一种光学装置,其包括具有闪耀的布拉格光栅的光波导,使得至少一部分光从导模耦合到辐射光束或光束中。 由闪耀的光纤光栅耦合的光在特定地取决于光的波长和光耦合的引导模式的有效折射率的第一预定位置处聚焦在中间像平面上的中间图像上。 本发明可以包括放置在中间图像平面处的空间光调制器,其用于控制​​光束或光束的相位和幅度分量。 更明显地,本发明还包括最终聚焦组件,其可以是用于将从空间光调制器出射的光束聚焦到小区域上的最终图像的透镜,使得光强度增加,从而提高检测灵敏度。 本发明还包括光接收器,其可以是用于检测最终图像的光电检测器或光电检测器阵列。
    • 3. 发明申请
    • METHOD AND APPARATUS OF FORMING DOMAIN INVERSION STRUCTURES IN A NONLINEAR FERROELECTRIC SUBSTRATE
    • 非线性微电子基板中形成域反转结构的方法与装置
    • WO2008037065A1
    • 2008-04-03
    • PCT/CA2007/001681
    • 2007-09-20
    • XU, Chang QingCHANG, Jen-ShihMARKLE, Jonathan
    • XU, Chang QingCHANG, Jen-ShihMARKLE, Jonathan
    • G02F1/35G02F1/365H01L21/64
    • G02F1/3558C30B29/30C30B33/04
    • A crystal poling apparatus has as ingle-domain ferroelectric substrate (e.g. MgO doped LiNbO3 substrate), a sample holder, a high voltage source, a corona torch, a gas source, a chamber, and at least one vacuum pump. An electrode with a certain structure (e.g. a periodical pattern) is formed on the first surface of the substrate, and the substrate is set with the electrode facing down on top of the sample holder. The electrode is grounded so that high electric field is formed in the area with electrode due to the formation of charges generated by the corona torch on the second surface of the substrate. The charge distribution on the second surface of the substrate is controlled by the high voltage source and the gas source. To achieve the optimized crystal poling, the temperature of the substrate is set by the temperature controller, and the electrode on the first surface of the substrate is isolated by the vacuum pump.
    • 晶体极化装置具有单域铁电衬底(例如MgO掺杂的LiNbO 3衬底),样品保持器,高压源,电晕炬,气体源,腔室和至少一个真空泵。 在基板的第一表面上形成具有一定结构(例如周期性图案)的电极,并且将电极设置为位于样品保持器顶部的电极。 电极接地,由于在基板的第二表面上形成由电晕炬产生的电荷,所以在具有电极的区域中形成高电场。 基板的第二表面上的电荷分布由高电压源和气体源控制。 为了实现优化的晶体极化,通过温度控制器设置基板的温度,并且通过真空泵将衬底的第一表面上的电极隔离。