Apparatus and method for modulating optical intensity with amplitude noise suppressed by using linear optical modulator

    公开(公告)号:US06570698B2

    公开(公告)日:2003-05-27

    申请号:US09750072

    申请日:2000-12-29

    CPC classification number: G02F1/0123 H04B10/5051 H04B10/50575 H04B10/58

    Abstract: An apparatus and a method for modulating the optical intensity, with the noises suppressed by using a linear optical modulator, are disclosed, so that the characteristics of signals transmitted from an optical communication system can be improved, and that the resolution of the measured physical quantities can be improved in an optical measuring instrument. The method is carried out in the following manner. That is, the magnitude of frequency is measured by utilizing pilot signals and electrical signals to transfer negatively fed-back signals to an optical intensity modulator. The phase is delayed by generating pilot signals so as to suppress an amplitude noise from the pilot signal caused by nonlinear modulation at the optical intensity modulator. A linear modulation is carried out on the phase-delayed signals and on optical signals from an external source to provide a linear component. The bias voltage is adjusted in accordance with the negatively fed-back signals, and an optical intensity modulation is carried out on the linearly modulated signals and on the added signals, the added signals having been formed by combining the data signals and the pilot signals.

    Polarization-dependent type directional isolator and ring-type resonator laser
    32.
    发明授权
    Polarization-dependent type directional isolator and ring-type resonator laser 失效
    偏振相关型方向隔离器和环型谐振器激光器

    公开(公告)号:US06192063B1

    公开(公告)日:2001-02-20

    申请号:US09098625

    申请日:1998-06-17

    CPC classification number: G02F1/093 H01S3/083 H01S5/1071

    Abstract: A polarization-dependent type directional isolator. The polarization-dependent type directional isolator comprises a pair of first optical means positioned at a path along which light travels for changing the rotation direction of an incident light depending on the traveling direction of the incident light; a pair of second optical means for rotating the incident light by a given angle; and a third optical means positioned between the pair of second optical means for passing through only specific components of the components of the incident light, thereby making it possible to obtain laser outputs oscillating in both directions independently.

    Abstract translation: 偏振相关型方向隔离器。 偏振相关型方向隔离器包括一对第一光学装置,其位于沿着光线行进的路径上,用于根据入射光的行进方向改变入射光的旋转方向; 一对用于使入射光旋转给定角度的第二光学装置; 以及位于所述一对第二光学装置之间的第三光学装置,用于仅穿过入射光的分量的特定分量,从而可以获得在两个方向上独立地振荡的激光输出。

    Method of controlling optical output power and passive optical network system using the same
    33.
    发明授权
    Method of controlling optical output power and passive optical network system using the same 失效
    控制光输出功率的方法及其使用的无源光网络系统

    公开(公告)号:US08103163B2

    公开(公告)日:2012-01-24

    申请号:US12439679

    申请日:2007-08-22

    CPC classification number: H04B10/40

    Abstract: Provided are an optical output power control method that provides optical communication without harming the human body even when a transmission line is cut or no optical network unit (ONU) accesses a communication system, and a passive optical network (PON) system using the method. In the method, an optical signal having a predetermined period is transmitted when an optical communication system is in an abnormal state, wherein the predetermined period includes a laser-on time interval in which the optical signal has a normal power level and a laser-off time interval in which the optical signal is off or has a power level lower than the normal power level, so that the optical communication system performs optical communication without harming the human body even during the abnormal state.

    Abstract translation: 提供一种光输出功率控制方法,即使在传输线被切断或者没有光网络单元(ONU)访问通信系统的情况下也提供光通信而不伤害人体,以及使用该方法的无源光网络(PON)系统。 在该方法中,当光通信系统处于异常状态时,发送具有预定周期的光信号,其中,预定周期包括光信号具有正常功率电平和激光关断的激光开启时间间隔 光信号关闭或功率电平低于正常功率电平的时间间隔,使得即使在异常状态下,光通信系统也不会对人体造成伤害,进行光通信。

    PHOTONIC BIOSENSOR, PHOTONIC BIOSENSOR ARRAY, AND METHOD OF DETECTING BIOMATERIALS USING THE SAME
    35.
    发明申请
    PHOTONIC BIOSENSOR, PHOTONIC BIOSENSOR ARRAY, AND METHOD OF DETECTING BIOMATERIALS USING THE SAME 审中-公开
    光电生物传感器,光电生物传感器阵列,以及使用该方法检测生物体的方法

    公开(公告)号:US20110129846A1

    公开(公告)日:2011-06-02

    申请号:US12860796

    申请日:2010-08-20

    Abstract: A photonic biosensor, a photonic biosensor array, and a method of detecting a bio-material using the same are provided. The photonic biosensor includes a light emitting diode configured to emit light, a photodiode (PD), an optical fiber configured to connect the light emitting diode with the PD, and a micro-fluidic channel disposed on the optical fiber. Bio-antibodies or aptamers are fixed to the surface of the optical fiber, and the micro-fluidic channel includes gold (Au) nanoparticles to which bio-antibodies or aptamers are fixed. The photonic biosensor may be configured using absorption of surface plasmons in Au nanoparticles with respect to light traveling through the surface of the optical fiber configured to connect the light emitting diode with the PD, thus simplifying the manufacture of the biosensor and reducing the manufacturing cost.

    Abstract translation: 提供了光子生物传感器,光子生物传感器阵列和使用其的生物材料的检测方法。 光子生物传感器包括被配置为发光的发光二极管,光电二极管(PD),被配置为将发光二极管与PD连接的光纤以及设置在光纤上的微流体通道。 生物抗体或适配体固定在光纤表面,微流体通道包括固定有生物抗体或适体的金(Au)纳米颗粒。 光子生物传感器可以使用Au纳米颗粒中的表面等离子体的吸收来配置,该光束传播通过配置成将发光二极管与PD连接的光纤的表面传播的光,从而简化了生物传感器的制造并降低了制造成本。

    APPARATUS FOR DETECTING BIOMATERIALS AND METHOD FOR DETECTING BIOMATERIALS BY USING THE APPARATUS
    37.
    发明申请
    APPARATUS FOR DETECTING BIOMATERIALS AND METHOD FOR DETECTING BIOMATERIALS BY USING THE APPARATUS 失效
    用于检测生物体的装置和使用装置检测生物体的方法

    公开(公告)号:US20100141942A1

    公开(公告)日:2010-06-10

    申请号:US12534464

    申请日:2009-08-03

    CPC classification number: G01N21/554 G01N21/33

    Abstract: Provided are an apparatus and method for detecting biomaterials. The apparatus for detecting the biomaterials includes a light source unit, a biomaterial reacting unit, and a detection unit detecting. The light source unit provides incident light. The biomaterial reacting unit includes a substrate and metal nanoparticles spaced from the substrate. The surface plasmon resonance phenomenon is induced on surfaces of the metal nanoparticles by the incident light. First detecting molecules specifically binding to target molecules are immobilized to the surfaces of the metal nanoparticles. The detection unit detects a resonance wavelength of emission light emitted from the metal nanoparticles by the surface plasmon resonance phenomenon.

    Abstract translation: 提供了用于检测生物材料的装置和方法。 用于检测生物材料的装置包括光源单元,生物材料反应单元和检测单元检测。 光源单元提供入射光。 生物材料反应单元包括与衬底间隔开的衬底和金属纳米颗粒。 通过入射光在金属纳米颗粒的表面上诱导表面等离子体共振现象。 首先检测与靶分子特异性结合的分子被固定在金属纳米粒子的表面。 检测单元通过表面等离子体共振现象检测从金属纳米颗粒发射的发射光的共振波长。

    ACOUSTO-OPTIC FILTER AND OPTICAL CDMA SYSTEM USING THE SAME
    38.
    发明申请
    ACOUSTO-OPTIC FILTER AND OPTICAL CDMA SYSTEM USING THE SAME 失效
    ACOUSTO-OPTIC FILTER和光CDMA系统

    公开(公告)号:US20090196614A1

    公开(公告)日:2009-08-06

    申请号:US12361522

    申请日:2009-01-28

    CPC classification number: H04J14/005

    Abstract: Provided are an acousto-optic filter and an optical code division multiple access (CDMA) system using the acousto-optic filter. The acousto-optic filer includes: an acousto-optic mode converter (AOMC) converting an optical signal of a specific optical frequency corresponding to a frequency of an electric signal of an optical signal of a first mode having a predetermined optical frequency band; and a mode stripper (MS) stripping an optical signal of the optical signal of the first mode that has been converted to a second mode.

    Abstract translation: 提供了声光滤波器和使用声光滤波器的光码分多址(CDMA)系统。 声光滤波器包括:声光模式转换器(AOMC),其转换对应于具有预定光频带的第一模式的光信号的电信号的频率的特定光频率的光信号; 以及模式剥离器(MS)剥离已经转换为第二模式的第一模式的光信号的光信号。

    Single-to-multi mode converter and optical code division multiple access system using the same
    39.
    发明授权
    Single-to-multi mode converter and optical code division multiple access system using the same 有权
    单模到多模转换器和光码分多址系统使用相同

    公开(公告)号:US07366421B2

    公开(公告)日:2008-04-29

    申请号:US10940790

    申请日:2004-09-13

    CPC classification number: H04B10/2581 G02B6/14 G02B6/2932

    Abstract: A single-to-multi mode converter and an optical code division multiple access system using the same. The mode converter includes first, second, and third optical waveguides. The first optical waveguide is formed of a single-mode optical fiber and outputs a single-mode optical signal. The second optical waveguide converts the single-mode optical signal output from the first optical waveguide to a multi-mode optical signal and allows the optical power of the single-mode optical signal to be coupled to each mode of the multi-mode optical signal. The third optical waveguide is formed of a multi-mode optical fiber and transmits the multi-mode optical signal output from the second optical waveguide.

    Abstract translation: 一对多模式转换器和使用该模式转换器的光码分多址系统。 模式转换器包括第一,第二和第三光波导。 第一光波导由单模光纤形成,并输出单模光信号。 第二光波导将从第一光波导输出的单模光信号转换为多模光信号,并且允许单模光信号的光功率耦合到多模光信号的每个模式。 第三光波导由多模光纤形成,并且传输从第二光波导输出的多模光信号。

    Optical CDMA transmitting apparatus and method for transmitting bipolar data
    40.
    发明授权
    Optical CDMA transmitting apparatus and method for transmitting bipolar data 失效
    光CDMA发送装置及发送双极数据的方法

    公开(公告)号:US07308199B2

    公开(公告)日:2007-12-11

    申请号:US10645289

    申请日:2003-08-18

    CPC classification number: H04J14/005 H04J13/16

    Abstract: Provided is an optical Code Division Multiple Access (CDMA) transmitting apparatus and method for transmitting bipolar data in an optical CDMA system. The optical CDMA transmitting apparatus and method of the present research has a simple structure, including only one optical CDMA encoder and one optical modulator. This technology minimizes multiple access interference by using modified pseudo-noise code in the encoding process, thus improving the optical CDMA transmission performance. The optical CDMA transmitting apparatus includes: an optical CDMA encoding means for encoding lights from the outside into a code or a complement code of the code; and an optical modulation means for transmitting the code or the complement code of the code which is selected in the optical CDMA encoding means based on the polarity (either ‘0’ or ‘1’) of the data inputted from the outside.

    Abstract translation: 提供了一种用于在光CDMA系统中传输双极性数据的光码分多址(CDMA)发射装置和方法。 本研究的光CDMA发射装置和方法具有简单的结构,仅包括一个光CDMA编码器和一个光调制器。 该技术通过在编码处理中使用修改的伪噪声码来最大限度地减少多址接入干扰,从而提高光CDMA传输性能。 光CDMA发送装置包括:用于将来自外部的光编码为码的码或补码的光CDMA编码装置; 以及光调制装置,用于基于从外部输入的数据的极性(“0”或“1”)发送在光CDMA编码装置中选择的码的码或补码。

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