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公开(公告)号：KR101833108B1
公开(公告)日：2018-02-27
申请号：KR1020150190403
申请日：2015-12-30
Applicant: 한국과학기술원
Abstract: 본발명의일 실시예에따른적어도두 개의배열형도파로격자를이용한온도유지장치를사용하지않는 WDM 시스템은적어도 2 이상의 DFB LD(distributed feedback laser diode)를구비하여다채널광을출력하는광원을포함하는송신단, 및적어도 2 이상의배열형도파로격자(AWG, arrayed waveguide grating) 및상기적어도 2 이상의 AWG 각각에연결되는적어도 2 이상의광검출부를포함하여, 열전냉각기(TEC, thermo-electric cooler)를이용하지않고도, 누락되는신호없이상기송신단에서전송되는신호를전부수신하는수신단을포함할수 있다.
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公开(公告)号：KR1020160106522A
公开(公告)日：2016-09-12
申请号：KR1020160025337
申请日：2016-03-02
Applicant: 한국과학기술원
IPC: H04B10/2581 , H04B10/50 , H04B10/548 , H04J14/02
Abstract: 본발명의일 실시예에따른멀티캐리어생성기기반코히어런트광통신시스템은레퍼런스신호를출력하는광 소스(reference optical source), 및상기레퍼런스신호에기반하여복수의모드에해당하는광 빗을생성하고, 상기복수의모드에해당하는광 빗을통하여복수의트랜시버(transceiver)를구동하는적어도 2이상의센트럴오피스(central office)를포함할수 있다.
Abstract translation: 根据本发明的实施例，基于多载波发生器的相干光通信系统包括：参考光源，其输出参考信号; 以及两个或更多个中央局，其基于参考信号产生对应于多个模式的光梳，并且通过对应于多个模式的光梳驱动多个收发器。
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公开(公告)号：KR1020160106482A
公开(公告)日：2016-09-12
申请号：KR1020150190401
申请日：2015-12-30
Applicant: 한국과학기술원
IPC: H04B10/50 , H04B10/2507
Abstract: 본발명의일 실시예에따른듀얼패브리-페롯레이저기반의광송신기는제1 패브리-페롯레이저다이오드(F-P LD1, Fabry-Perot Laser Diode) 및제2 패브리-페롯레이저다이오드(F-P LD2)를구비하고, 무편광광을변조하는반사형듀얼패브리-페롯레이저다이오드(Dual F-P LDs), 씨앗광원(SLS, Seed Light Source)으로이용되는제3 패브리-페롯레이저다이오드(F-P LD3), 및상기제3 패브리-페롯레이저다이오드의선형편광된광을수신하여, 상기무편광광을출력하는마크-젠더간섭계(MZI: Mach-Zehnder Interferometer)를포함할수 있다.
Abstract translation: 根据本发明的实施例，基于双法布里 - 珀罗激光器的光收发器包括：反射双法布里 - 珀罗激光二极管（Dual FP LD），其包括第一法布里 - 珀罗激光二极管（FP LD1）和第二法布里 - 激光二极管（FP LD2）和调制非偏振光; 用作种子光源（SLS）的第三个法布里 - 珀罗激光二极管（F-P LD3）; 以及通过接收来自第三法布里 - 珀罗激光二极管（F-P LD3）的线偏振光来输出非偏振光的马赫 - 策德尔干涉仪（MZI）。
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公开(公告)号：KR101590105B1
公开(公告)日：2016-02-01
申请号：KR1020150014467
申请日：2015-01-29
Applicant: 한국과학기술원
CPC classification number: H04L63/0414 , H04B10/70 , H04L9/0852
Abstract: 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.
Abstract translation: 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。
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Patent Agency Ranking
公开(公告)号：KR101239240B1
公开(公告)日：2013-03-06
申请号：KR1020110126586
申请日：2011-11-30
Applicant: 한국과학기술원
CPC classification number: H04B10/2587 , H04J14/0282 , H04J2014/0253
Abstract: 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
Abstract translation: 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
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公开(公告)号：KR1020130015466A
公开(公告)日：2013-02-14
申请号：KR1020110077472
申请日：2011-08-03
Applicant: 에릭슨 엘지 주식회사 , 한국과학기술원
IPC: H04B10/08 , H04B10/2581
Abstract: 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
Abstract translation: 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
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公开(公告)号：KR101106789B1
公开(公告)日：2012-01-18
申请号：KR1020100028585
申请日：2010-03-30
Applicant: 한국과학기술원
IPC: H04B10/2581 , H04B10/43
Abstract: 본 발명은 이득포화 효과를 가지는 광원을 이용한 잡음 억제 장치 및 방법, 및 이를 구비한 광가입자망을 개시한다.
본 발명에 따른 잡음 억제 장치는 이미 구축되어 있는 시스템에서 그 구조의 변경 없이 중앙기지국(CO)에서 패브리-페롯 레이저 다이오드(FP LD), 반사용 광증폭기(RSOA), 또는 반도체 광증폭기(SOA)와 같은 이득포화 특성을 가지는 광원을 구비한 잡음 억제 장치를 포함하는 것을 특징으로 한다. 중앙기지국(CO)의 FP LD에 주입되는 비간섭성 광원의 외부 광신호 또는 비간섭성 광원이 주입된 후의 파장 잠김된 FP LD 광원의 외부 광신호(즉, 상향 신호 및 하향 신호)를 본 발명의 잡음 억제 장치에 통과시키면 이득포화 현상에 의해 광세기 잡음이 감소하여 고속의 신호를 전송하기 위해 필요한 광원의 품질을 향상시킬 수 있다.-
19.发明公开높은 스펙트럼 효율을 구비한 전송 포맷을 이용하여 고속광신호 전송이 가능한 파장 분할 다중방식 수동형 광가입자망 失效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
公开(公告)号：KR1020070111884A
公开(公告)日：2007-11-22
申请号：KR1020060045272
申请日：2006-05-19
Applicant: 한국과학기술원
IPC: H04L12/28 , H04B10/2581
CPC classification number: H04L12/66
Abstract: 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).
Abstract translation: 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。
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公开(公告)号：KR100720110B1
公开(公告)日：2007-05-18
申请号：KR1020050042603
申请日：2005-05-20
Applicant: 한국과학기술원
IPC: H04B10/2581 , H04B10/25
CPC classification number: H04J14/0227 , H04B10/572 , H04J14/0226 , H04J14/0246 , H04J14/025 , H04J14/0282 , H04Q11/0067 , H04Q2011/0016
Abstract: The present invention relates to a long-reach wavelength division multiplexing passive optical network(WDM-PON), and especially to the long-reach WDM-PON capable of ensuring economic and stable QoS (Quality of Service). The Long-reach WDM-PON in accordance with the present invention includes an optical transmitter/receiver located at central office and each optical network termination; wavelength division multiplexer/demultiplexer located at said central office and remote node; and broadband incoherent light source which is connected with a long-reach single-mode fiber to said wavelength division multiplexer/demultiplexer and spectrum-sliced and injected into the transmitters located at said central office and each optical network termination.
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