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    • 5. 发明授权
    • P2MP 네트워크에서 광자수 분리 공격(PNS)을 감지할 수 있는 양자 키 분배 방법 및 시스템
    • 用于量子键分配的方法和系统可用于检测P2MP网络中的PNS攻击
    • KR101590105B1
    • 2016-02-01
    • KR1020150014467
    • 2015-01-29
    • 한국과학기술원
    • 이준구임경천고해신이창희서창호
    • H04L29/06H04L9/08H04B10/70
    • H04L63/0414H04B10/70H04L9/0852
    • 본발명은양자암호키 분배방법및 시스템에관한것으로서, 보다구체적으로는 P2MP(Point to Multi-Point) 네트워크에서광자수분리공격(PNS attack)을효과적으로감지하여도청자의공격에대응할수 있는양자키 분배방법및 시스템에관한것이다. 본발명은송신부와복수의수신부가양자채널로연결된 P2MP(Point to Multi-Point) 네트워크에서의양자키 분배방법에있어서, 상기송신부에서송출되는복수의펄스에대한평균광자수와상기복수의수신부에서의펄스수신정보를수집하는정보수집단계; 상기송신부에서의평균광자수와상기복수의수신부에서의펄스수신정보및 수신부의숫자를고려하여상기양자채널에서의광자의손실률을산출하는광자손실률산출단계; 상기손실률을고려하여상기복수의수신부에서의펄스수신분포예측치를도출하는펄스수신분포예측치도출단계; 상기복수의수신부에서의펄스수신정보로부터상기복수의수신부에서의펄스수신분포측정치를도출하는펼스수신분포측정치도출단계; 및상기펄스수신분포예측치와상기펼스수신분포측정치를비교하여광자수분리(Photon Number Splitting) 공격의여부를판단하는공격여부판단단계를포함하는것을특징으로하는양자키 분배방법을개시한다.
    • 本发明涉及量子密钥分发方法和系统,更具体地说,涉及量子密钥分发(QKD)方法和系统,能够在点对多点(P2MP)中检测Eve的光子数分解(PNS)攻击, 网络,从而对抗攻击。 通过量子通道连接Alice和多个Bob的P2MP网络中的QKD方法包括:从多个Bob收集从Alice发送的多个脉冲的平均光子数和脉冲接收信息的信息收集步骤; 光子损失计算步骤,考虑到Alice处的平均光子数,多个Bob的脉冲接收信息和Bob的数量,计算量子信道处的光子的损耗率; 考虑损失率的脉冲接收分配期望导出步骤,导出多个Bob的脉冲接收分布期望; 脉冲接收分布测量导出步骤,从多个Bob的脉冲接收信息导出多个Bob的脉冲接收分布测量; 以及攻击确定步骤,通过比较脉冲接收分布期望和脉冲接收分布测量来确定是否存在PNS攻击。
    • 7. 发明授权
    • 주입잠김된 광원의 잡음억제 장치 및 이를 구비한 WDM-PON 시스템
    • 用于注射种子光源和波长段的噪声抑制装置具有相同的多路复用被动光网络系统
    • KR101239240B1
    • 2013-03-06
    • KR1020110126586
    • 2011-11-30
    • 한국과학기술원
    • 이창희문상록유상화김준영계명균서병일
    • H04B10/18H04J14/02
    • H04B10/2587H04J14/0282H04J2014/0253
    • PURPOSE: A noise control device and a WDM-PON(Wavelength Division Multiplexed Passive Optical Network) system are provided to control noise generated from an optical source by using a feed forward method. CONSTITUTION: An optical coupler(11) divides received light. A converter(14) converts an optical signal received from the optical coupler into an electric signal. An inverter(15) changes a phase of the electric signal which is converted by the converter. An optical source driving unit(17) receives the phase of the electric signal which is reversed by the inverter. The optical driving unit provides a driving current which drives the optical source. [Reference numerals] (11) Optical coupler; (12) Optical delaying unit; (13) Optical source; (14) Converter; (15) Inverter; (16) Amplifying unit; (17) Optical source driving unit; (2) Optical source for injection
    • 目的:提供噪声控制装置和WDM-PON(波分复用无源光网络)系统,通过使用前馈方式来控制从光源产生的噪声。 构成:光耦合器(11)将接收到的光分开。 A转换器(14)将从光耦合器接收的光信号转换为电信号。 逆变器(15)改变由转换器转换的电信号的相位。 光源驱动单元(17)接收由逆变器反相的电信号的相位。 光驱动单元提供驱动光源的驱动电流。 (附图标记)(11)光耦合器; (12)光延迟单元; (13)光源; (14)转换器; (15)变频器; (16)放大单元; (17)光源驱动单元; (2)注射用光源
    • 8. 发明公开
    • 패브리 페롯 레이저 다이오드 시뮬레이션 방법 및 장치
    • 装饰激光二极管的装置和模拟方法
    • KR1020130015466A
    • 2013-02-14
    • KR1020110077472
    • 2011-08-03
    • 에릭슨 엘지 주식회사한국과학기술원
    • 김봉수이희열이창희김준영문상록
    • H04B10/08H04B10/2581
    • PURPOSE: A Fabry-Perot laser diode(FP-LD) simulation method and a device are provided to reduce calculation time by using a gain calculation formula used in a semiconductor optical amplifier. CONSTITUTION: A FP-LD simulation device applies the average of a calculated gain and a loss and phase change during a round-trip to the whole samples of injected light(S150). The FP-LD simulation device forms composite light by adding the whole samples of the injected light to the whole samples in which a phase change is applied. The FP-LD simulation device performs round-trip a number of times which the number of the whole samples of the injected light is divided into samples included in round-trip. The FP-LD simulation device outputs the loss and the phase change in the last round-trip by applying the same to the whole samples of the light performing the last round-trip. [Reference numerals] (AA) Start; (BB) Yes; (CC) No; (DD) End; (S110) Injecting external light(field) i=0; (S117) Applying a calculated whole gain to a whole field; (S120) Roundtrip (i=i+1); (S130) Calculating the gain a roundtrip sample; (S140) Applying the average of the gain to the whole field; (S150) Applying mirror loss and phase change to the whole field; (S160) Injecting external light(field); (S180) Applying the mirror loss and combination efficiency and outputting
    • 目的:通过使用半导体光放大器中使用的增益计算公式,提供了法布里 - 珀罗激光二极管(FP-LD)仿真方法和器件来减少计算时间。 构成:FP-LD模拟装置将往返期间的计算增益平均值,损耗和相位变化应用于整个注入光的样本(S150)。 FP-LD模拟装置通过将注入的光的全部样本添加到其中施加相变的整个样品来形成复合光。 FP-LD模拟装置执行往返行程多次,其中注入的光的整个样本的数量被分为往返中包括的样本。 FP-LD模拟装置通过对最后一次往返的光的整个采样施加相同的次数来输出最后往返中的损耗和相位变化。 (附图标记)(AA)开始; (BB)是的; (CC)否; (DD)结束; (S110)注入外部光(场)i = 0; (S117)将计算的全增益应用于整个场; (S120)往返(i = i + 1); (S130)计算往返行程的增益; (S140)将增益的平均值应用于整个场; (S150)对整个场应用镜面损耗和相位变化; (S160)注射外部光(场); (S180)应用镜面损耗和组合效率和输出
    • 10. 发明公开
    • 높은 스펙트럼 효율을 구비한 전송 포맷을 이용하여 고속광신호 전송이 가능한 파장 분할 다중방식 수동형 광가입자망
    • 通过使用具有高光谱效率的调制格式,可以高速传输光信号的波长段多路径无源光网络
    • KR1020070111884A
    • 2007-11-22
    • KR1020060045272
    • 2006-05-19
    • 한국과학기술원
    • 이창희최기만문실구문정형
    • H04L12/28H04B10/2581
    • H04L12/66
    • A WDM PON(Wavelength Division Multiplexed-Passive Optical Network) capable of conducting high-speed optical signal transmission by using a transfer format having high spectral efficiency is provided to use the transfer format having high spectral efficiency as using a part with excellent noise characteristics in a used optical source, thereby economically offering high capacity and high speed of an optical network unit. The first AWG(Arrayed Waveguide Grating) is located in an OLT(Optical Line Termination), and has the number of n output ports. N optical transceivers(TRx)(OLT1 to OLTn) are individually connected to the first AWG. The second AWG is located on a remote node, and has the number of n output ports. N optical transceivers(TRx)(ONT(Optical Network Termination)1 to ONTn) are located on an ONT side, and are individually connected to the second AWG. An SMF(Single Mode Fiber) is used for transmission of signals delivered through the first AWG and the second AWG. N individual transmission SMFs are connected between the second AWG and the n optical transceivers(TRx)(ONT1 to ONTn).
    • 提供能够通过使用具有高频谱效率的传输格式进行高速光信号传输的WDM PON(波分多路复用无源光网络),以使用具有高频谱效率的传输格式,使用具有优异噪声特性的部分 使用光源,从而经济地提供光网络单元的高容量和高速度。 第一个AWG(阵列波导光栅)位于OLT(光线路终端),并具有n个输出端口的数量。 N个光收发器(TRx)(OLT1至OLTn)分别连接到第一个AWG。 第二个AWG位于远程节点上,并具有n个输出端口数。 N光收发器(TRx)(ONT(光网络终端)1至ONTn)位于ONT侧,并分别连接到第二AWG。 SMF(单模光纤)用于传输通过第一AWG和第二AWG传送的信号。 N个单独的传输SMF连接在第二AWG和n个光收发器(TRx)(ONT1到ONTn)之间。