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    Planar lightwave circuit waveguide bends and beamsplitters
    2.
    发明申请
    Planar lightwave circuit waveguide bends and beamsplitters 有权
    平面光波电路波导弯管和分束器

    公开(公告)号：US20050152633A1

    公开(公告)日：2005-07-14

    申请号：US10973068

    申请日：2004-10-25

    申请人： Lixia Li ,  Gregory Nordin ,  Jianhua Jiang ,  Jennifer English

    发明人： Lixia Li ,  Gregory Nordin ,  Jianhua Jiang ,  Jennifer English

    IPC分类号： G02B6/126 ,  G02B6/12

    CPC分类号： G02B6/126

    摘要： A planar lightwave circuit has a waveguide having a bend and plurality of multiple trenches with parallel front and back interfaces. The trench and waveguide refractive indexes are different such that a refractive interface is defined between the waveguide and the trench. The trench may include a material of higher refractive index than the waveguide, such as silicon, or alternatively a material having a lower refractive index than the waveguide, such as an air void. The trench is disposed on the waveguide bend such that the front and back planar interfaces have an angle of incidence to a direction of the lightwave propagation from the waveguide. The invention also includes beamsplitters that include trenches that reflect a portion of a lightwave in a first direction and a portion of a lightwave in a second direction.

    摘要翻译： 平面光波电路具有具有弯曲的波导和多个具有平行的前后接口的多个沟槽。 沟槽和波导折射率是不同的，使得在波导和沟槽之间限定折射界面。 沟槽可以包括比诸如硅的波导更高的折射率的材料，或者替代地具有比波导低折射率的材料，例如空气空隙。 沟槽设置在波导弯管上，使得前和后平面界面具有与波导从光波传播的方向的入射角。 本发明还包括分束器，其包括在第一方向上反射光波的一部分并且沿第二方向反射光波的一部分的沟槽。

    Planar lightwave circuit waveguide bends and beamsplitters
    4.
    发明授权
    Planar lightwave circuit waveguide bends and beamsplitters 有权
    平面光波电路波导弯管和分束器

    公开(公告)号：US07206470B2

    公开(公告)日：2007-04-17

    申请号：US10973068

    申请日：2004-10-25

    申请人： Lixia Li ,  Gregory P. Nordin ,  Jianhua Jiang ,  Jennifer M. English

    发明人： Lixia Li ,  Gregory P. Nordin ,  Jianhua Jiang ,  Jennifer M. English

    IPC分类号： G02B6/12 ,  G02B6/26 ,  G02B6/42

    CPC分类号： G02B6/126

    摘要： A planar lightwave circuit has a waveguide having a bend and plurality of multiple trenches with parallel front and back interfaces. The trench and waveguide refractive indexes are different such that a refractive interface is defined between the waveguide and the trench. The trench may include a material of higher refractive index than the waveguide, such as silicon, or alternatively a material having a lower refractive index than the waveguide, such as an air void. The trench is disposed on the waveguide bend such that the front and back planar interfaces have an angle of incidence to a direction of the lightwave propagation from the waveguide. The invention also includes beamsplitters that include trenches that reflect a portion of a lightwave in a first direction and a portion of a lightwave in a second direction.

    摘要翻译： 平面光波电路具有具有弯曲的波导和多个具有平行的前后接口的多个沟槽。 沟槽和波导折射率是不同的，使得在波导和沟槽之间限定折射界面。 沟槽可以包括比诸如硅的波导更高的折射率的材料，或者替代地具有比波导低折射率的材料，例如空气空隙。 沟槽设置在波导弯管上，使得前和后平面界面具有与波导从光波传播的方向的入射角。 本发明还包括分束器，其包括在第一方向上反射光波的一部分并且沿第二方向反射光波的一部分的沟槽。

    SOI ANALOGIC FRONT CIRCUIT FOR MEDICAL DEVICE
    5.
    发明申请
    SOI ANALOGIC FRONT CIRCUIT FOR MEDICAL DEVICE 有权
    用于医疗设备的SOI模拟前电路

    公开(公告)号：US20130287238A1

    公开(公告)日：2013-10-31

    申请号：US13697115

    申请日：2012-06-18

    申请人： Chengying Chen ,  Yong Hei ,  Jun Fan ,  Jianhua Jiang

    发明人： Chengying Chen ,  Yong Hei ,  Jun Fan ,  Jianhua Jiang

    IPC分类号： H04R25/00

    CPC分类号： H04R25/505 ,  H04R2460/03

    摘要： The present disclosure provides an SOI analog front circuit for a medical device, characterized in that it comprises an automatic gain control loop and a 2-order-3-bit-quantization Sigma-Delta analog-to-digital converter, wherein: the automatic gain control loop is configured to implement automatic control of loop gain and output an analog signal to the 2-order-3-bit-quantization Sigma-Delta analog-to-digital converter; and the 2-order-3-bit-quantization Sigma-Delta analog-to-digital converter is configured to convert the analog signal output from the automatic gain control loop into a digital code and output the digital code to a DSP for processing. The analog front circuit for the medical hearing aid device may be implemented by integration of three comparators, an analog-digital hybrid automatic gain control loop and a 2-order-3-bit-quantization Sigma-Delta analog-to-digital converter on a single chip using SOI process with high reliability and low power consumption. The analog front circuit has high accuracy, high reliability, and low power consumption. The analog front circuit may be applied in the medical hearing aid device.

    摘要翻译： 本公开提供了一种用于医疗设备的SOI模拟前置电路，其特征在于，其包括自动增益控制回路和2阶3位量化Σ-Δ模数转换器，其中：自动增益 控制回路被配置为实现环路增益的自动控制，并将模拟信号输出到2阶3位量化的Σ-Δ模数转换器; 并且2阶3位量化的Σ-Δ模数转换器被配置为将从自动增益控制环路输出的模拟信号转换为数字代码，并将数字代码输出到DSP进行处理。 用于医疗助听器装置的模拟前置电路可以通过将三个比较器，模拟数字混合自动增益控制回路和二阶3位量化的Σ-Δ模数转换器集成在一个 单芯片采用SOI工艺，可靠性高，功耗低。 模拟前置电路具有高精度，高可靠性和低功耗。 模拟前置电路可以应用在医疗助听器装置中。

    Waveguide including at least one photonic crystal region for directing signals propagating therethrough
    6.
    发明授权
    Waveguide including at least one photonic crystal region for directing signals propagating therethrough 失效
    波导包括至少一个用于引导通过其传播的信号的光子晶体区域

    公开(公告)号：US06804446B1

    公开(公告)日：2004-10-12

    申请号：US10715966

    申请日：2003-11-18

    申请人： Gregory P. Nordin ,  Seunghyun Kim ,  Jingbo Cai ,  Jianhua Jiang

    发明人： Gregory P. Nordin ,  Seunghyun Kim ,  Jingbo Cai ,  Jianhua Jiang

    IPC分类号： G02B610

    CPC分类号： B82Y20/00 ,  G02B6/1225 ,  G02B2006/121 ,  G02B2006/12104 ,  G02B2006/12159

    摘要： A waveguide assembly is provided that includes a waveguide region and at least one photonic crystal (PhC) region. The waveguide region includes a longitudinally extending core that has an input channel and at least one output channel, and a cladding at least partially surrounding the core for confining signals within the core. The PhC region(s), in turn, extend laterally through at least a portion of the core to at least partially direct signals propagating through the core. The PhC region(s) can extend through at least a portion of the core to thereby form, for example, a bend, beamsplitter, polarizing beamsplitter, Mach-Zender interferometer or ring resonator for signals propagating through the core.

    摘要翻译： 提供了一种波导组件，其包括波导区域和至少一个光子晶体（PhC）区域。 波导区域包括具有输入通道和至少一个输出通道的纵向延伸的芯，以及至少部分地围绕芯的包层，用于限制芯内的信号。 PhC区域又横向延伸通过芯的至少一部分，以至少部分地引导传播通过芯的信号。 PhC区域可以延伸通过芯的至少一部分，从而形成例如用于通过芯传播的信号的弯曲，分束器，偏振分束器，马赫 - 赞德干涉仪或环形谐振器。

    Analogic front circuit for medical device
    7.
    发明授权
    Analogic front circuit for medical device 有权
    医疗器械模拟前置电路

    公开(公告)号：US08767988B2

    公开(公告)日：2014-07-01

    申请号：US13697115

    申请日：2012-06-18

    申请人： Chengying Chen ,  Yong Hei ,  Jun Fan ,  Jianhua Jiang

    发明人： Chengying Chen ,  Yong Hei ,  Jun Fan ,  Jianhua Jiang

    IPC分类号： H04R25/00

    CPC分类号： H04R25/505 ,  H04R2460/03

    摘要： An analog front circuit for a medical device includes an automatic gain control loop and a 2-order-3-bit-quantization Sigma-Delta analog-to-digital converter. The automatic gain control loop is configured to implement automatic control of loop gain and output an analog signal to the 2-order-3-bit-quantization Sigma-Delta analog-to-digital converter. The 2-order-3-bit-quantization Sigma-Delta analog-to-digital converter is configured to convert the analog signal output from the automatic gain control loop into a digital code and output the digital code to a DSP for processing.

    摘要翻译： 用于医疗装置的模拟前置电路包括自动增益控制回路和2阶3位量化Σ-Δ模数转换器。 自动增益控制回路被配置为实现环路增益的自动控制，并将模拟信号输出到2阶3位量化的Σ-Δ模数转换器。 2位3位量化的Sigma-Delta模数转换器被配置为将从自动增益控制环路输出的模拟信号转换成数字代码，并将数字代码输出到DSP进行处理。