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    • 36. 发明申请
    • DYNAMIC IMPEDANCE PHOTODETECTOR RECEIVER CIRCUIT
    • 动态阻抗光电收发器电路
    • US20110299856A1
    • 2011-12-08
    • US13202940
    • 2009-02-23
    • Kyung Hoae KooMarco FiorentinoDavid A. Fattal
    • Kyung Hoae KooMarco FiorentinoDavid A. Fattal
    • H04B10/06H04B10/02
    • H03K5/05G11C27/024H04B10/11H04B10/693H04B10/801
    • A photodetector receiver circuit for an optical communication system includes an optical photodetector which receives optical signals and converts them into an electrical current. In one illustrative embodiment, a dynamic impedance module which switches the receiver circuit between a high impedance state and a low impedance state and a buffer stage which receives the electrical current and converts the electrical current into a voltage signal compatible with a digital circuit. A method for receiving an optical signal includes, receiving the optical signal and converting it into an electrical pulse train, switching a dynamic impedance module between a high impedance state and a low impedance state, transforming the electrical pulse train into an output voltage signal using a buffer stage, and receiving the output voltage signal by a digital circuit.
    • 用于光通信系统的光电检测器接收器电路包括光接收器,其接收光信号并将其转换成电流。 在一个说明性实施例中,将接收器电路在高阻抗状态和低阻抗状态之间切换的动态阻抗模块和接收电流并将电流转换成与数字电路兼容的电压信号的缓冲级。 一种用于接收光信号的方法包括:接收光信号并将其转换成电脉冲串,在高阻抗状态和低阻状态之间切换动态阻抗模块,将电脉冲串转换成输出电压信号,使用 缓冲级,并通过数字电路接收输出电压信号。
    • 38. 发明申请
    • Hybrid Guided-Mode Resonance Filter And Method Employing Distributed Bragg Reflection
    • 使用分布布拉格反射的混合引导模式谐振滤波器和方法
    • US20110188807A1
    • 2011-08-04
    • US13002763
    • 2008-07-14
    • David A. FattalQianfan XuSagi V. MathaiMichael R. Tan
    • David A. FattalQianfan XuSagi V. MathaiMichael R. Tan
    • G02B6/34
    • G02B6/124G02B6/12007G02B6/29316
    • A hybrid guided-mode resonance (GMR) grating, an optical filter and a method of optical filtering employ distributed Bragg reflection. The hybrid GMR grating includes a waveguide layer that supports a GMR having a GMR resonant frequency. The hybrid GMR grating further includes a diffraction grating that couples a portion of a signal incident on the hybrid GMR grating into the waveguide layer; and a distributed Bragg reflector (DBR) that reflects another portion of the incident signal. The coupled portion of the incident signal has a frequency corresponding to the GMR resonant frequency. The reflected portion has a frequency away from the GMR resonant frequency. The optical filter includes the hybrid GMR grating and a coupler. The method includes coupling an optical signal into the hybrid GMR grating and further coupling a reflected signal out of the hybrid GMR grating.
    • 混合导模共振(GMR)光栅,光学滤波器和光学滤波方法采用分布式布拉格反射。 混合GMR光栅包括支持具有GMR谐振频率的GMR的波导层。 混合GMR光栅还包括将入射在混合GMR光栅上的信号的一部分耦合到波导层中的衍射光栅; 以及反射入射信号的另一部分的分布式布拉格反射器(DBR)。 入射信号的耦合部分具有对应于GMR谐振频率的频率。 反射部分具有远离GMR谐振频率的频率。 光学滤波器包括混合GMR光栅和耦合器。 该方法包括将光信号耦合到混合GMR光栅中,并将来自混合GMR光栅的反射信号进一步耦合。