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    • 63. 发明申请
    • ELECTROMAGNETIC DETECTION APPARATUS AND METHODS
    • 电磁检测装置及方法
    • US20100289490A1
    • 2010-11-18
    • US12779391
    • 2010-05-13
    • Xin FanJohn Q. Xiao
    • Xin FanJohn Q. Xiao
    • G01R33/00
    • G01R33/098B82Y25/00G01R33/093
    • Systems and methods for detecting electromagnetic waves are disclosed. A system for detecting such waves includes a device having a first magnetic layer having a fixed magnetization direction, a second magnetic layer having an unfixed magnetization direction responsive to the electromagnetic wave, and a barrier layer positioned between the first and second magnetic layers. The device may have an impedance dependent on a relative angle between the fixed magnetization direction and the unfixed magnetization direction. The system further has a detector configured to detect a change in the impedance indicative of the electromagnetic wave. The electromagnetic wave may be detected by positioning the device in order to detect the electromagnetic wave, determining a change in the impedance of the device, and detecting the electromagnetic wave based on the change in the impedance of the device. Characteristics of the wave such as frequency, power, and phase may also be detected.
    • 公开了用于检测电磁波的系统和方法。 用于检测这种波的系统包括具有固定磁化方向的第一磁性层的装置,具有响应于电磁波的非限定磁化方向的第二磁性层和位于第一和第二磁性层之间的阻挡层。 器件可以具有取决于固定磁化方向和非固定磁化方向之间的相对角度的阻抗。 该系统还具有检测器,其被配置为检测指示电磁波的阻抗的变化。 可以通过定位装置来检测电磁波,以便检测电磁波,确定装置的阻抗的变化,以及基于装置的阻抗的变化来检测电磁波。 还可以检测到频率,功率和相位等波的特性。
    • 68. 发明授权
    • Mechanically-active anti-reflection switch (MARS) modulator with wide angle tolerance
    • 具有广角公差的机械主动防反射开关(MARS)调制器
    • US07760412B2
    • 2010-07-20
    • US11368899
    • 2006-03-06
    • Keith Goossen
    • Keith Goossen
    • G02F1/03
    • G02B26/001
    • A modulator for modulating an optical signal is disclosed having a substrate, a support mounted to the substrate, and membrane attached to the support and defining an airgap between the substrate and the membrane. The membrane has at least three layers including a central layer having an index of refraction which is the square root of the index of refraction of the substrate. The thickness of the layers and the size of the airgap are optimized to maximize differential reflectivity of light incident on the membrane at a non-normal angle of incidence to the membrane when the membrane is either in an unbiased state or biased state. In one embodiment, the first, central, and third layers have corresponding thicknesses approximately equal to one-quarter, one-quarter, and on-half of a wavelength of the optical signal, respectively. In another embodiment, the thickness of the layers and the airgap are designed according to formulas such that the modulator can operate over wider angles of incidence up to about 55 degrees. In a third embodiment, the modulator can operate at an angle of incidence-up to about 85 degree with TE-only polarization of the incident light.
    • 公开了用于调制光信号的调制器,其具有衬底,安装到衬底的支撑件和附接到支撑件并且在衬底和膜之间限定气隙的膜。 膜具有至少三个层,包括具有折射率的中心层,该折射率是基板的折射率的平方根。 优化层的厚度和气隙的大小被优化,以当薄膜处于无偏压状态或偏置状态时以与入射膜非正常入射角入射在膜上的光的最大差分反射率最大化。 在一个实施例中,第一,中央和第三层分别具有大约等于光信号的波长的四分之一,四分之一和一半的对应厚度。 在另一个实施例中,根据公式设计层和气隙的厚度,使得调制器可以在高达约55度的较大入射角下工作。 在第三实施例中,调制器可以以高达约85度的入射角工作,同时入射光的仅TE极化。