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公开(公告)号：KR1020130126834A
公开(公告)日：2013-11-21
申请号：KR1020120046575
申请日：2012-05-02
Applicant: 한국전자통신연구원
IPC: H04B10/07 , H04B10/2507
CPC classification number: H04B10/071
Abstract: An optical layer monitoring apparatus and a method for the same are disclosed. According to one embodiment of the present invention, provided are an optical layer monitoring apparatus, including an optical time domain reflectometry (OTDR) function so as to monitor optical lines on a passive optical network, and a method for improving the accuracy of monitoring results which are measured using the optical layer monitoring apparatus. Thus, the user can continuously identify whether there is a failure of optical lines and quickly recover the optical lines when a failure of the optical lines occurs. [Reference numerals] (30) Optical layer monitoring apparatus;(300) OTDR signal transception unit;(302) OTDR signal processing unit;(32) Optical transmission device;(320) Optical transception unit;(3200) Data signal transception unit;(322) Data signal processing unit;(34) Optical filter unit;(AA) Optical line
Abstract translation: 公开了一种光学层监视装置及其方法。 根据本发明的一个实施例，提供了一种包括光时域反射测量（OTDR）功能以便监视无源光网络上的光线路的光学层监视装置，以及用于提高监视结果准确性的方法 使用光学层监视装置测量。 因此，当发生光线路的故障时，用户可以连续地识别是否存在光线路故障并且快速地恢复光线路。 （30）光层监视装置（300）OTDR信号传送单元;（302）OTDR信号处理单元;（32）光传输设备;（320）光传感单元;（3200）数据信号传输单元; （322）数据信号处理单元;（34）滤光单元;（AA）光线
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公开(公告)号：KR101190862B1
公开(公告)日：2012-10-15
申请号：KR1020080129349
申请日：2008-12-18
Applicant: 한국전자통신연구원
IPC: H04B10/2581 , H04J14/02 , H04B10/00
CPC classification number: H04J14/0282 , H04B10/506 , H04J14/02 , H04J14/06
Abstract: 본 발명은 파장 분할 다중화 기반의 수동형 광가입자망용 단일 종모드 발진 광원 기반의 씨앗광 모듈에 관한 것으로, 상기 씨앗광 모듈은,
서로 다른 파장의 연속 광파를 발생시키기 위한 다파장 신호 발생 광원부와; 상기 광원부로부터 출력되는 빛을 파장분할 다중화하기 위한 다중화부와; 상기 다중화부로부터 출력되는 다파장 성분의 빛을 특정 편광 성분별로 분리하기 위한 편광 빔 분리기와; 상기 편광 빔 분리기를 통해 분리된 제1편광 성분 및 제2편광 성분의 신호를 임의의 주파수와 크기를 가지는 정현파로 위상 변조하기 위한 위상 변조기들과; 정현파를 발생시키기 위한 RF신호 발생부와; 발생된 RF신호를 분배하기 위한 RF신호 분배기와; 분배된 RF신호를 증폭하기 위한 증폭기들과; 상기 위상 변조기들 각각에서 위상 변조된 빛을 결합하여 씨앗광 출력으로 제공하기 위한 편광 빔 결합기;를 포함함을 특징으로 한다.
씨앗광, 편광, 광원.-
公开(公告)号：KR1020120074357A
公开(公告)日：2012-07-06
申请号：KR1020100136163
申请日：2010-12-28
Applicant: 한국전자통신연구원
IPC: H04B10/2581
CPC classification number: H04B10/272 , H04J14/0232 , H04J14/0238 , H04J14/0246 , H04J14/0247 , H04J14/025 , H04J14/0252 , H04J14/0282
Abstract: PURPOSE: A passive optical network apparatus for transmitting optical signals is provided to promote band efficiency of uplink signals by changing a complex circuit into a simple circuit for transmitting and receiving the uplink signals. CONSTITUTION: An optical circulator(541) transmits a downlink signal inputted from a downlink optical trunk network to a wavelength distributer(542). The optical circulator transmits uplink signals inputted from the wavelength distributer to the downlink optical trunk network and a different uplink optical trunk network. The wavelength distributer distributes the downlink signal to plural wavelengths. The wavelength distributer connects the downlink signal to an optical distribution network. The wavelength distributer connects the uplink signal inputted from the optical distributer to the optical circulator.
Abstract translation: 目的：提供一种用于发送光信号的无源光网络装置，用于通过将复合电路改变成用于发送和接收上行链路信号的简单电路来提高上行链路信号的频带效率。 构成：光循环器（541）将从下行链路光中继网络输入的下行链路信号发送到波长分配器（542）。 光循环器将从波长分配器输入的上行链路信号发送到下行链路光中继网络和不同的上行链路光中继网络。 波长分配器将下行链路信号分配到多个波长。 波长分配器将下行链路信号连接到光分配网络。 波长分配器将从光分配器输入的上行链路信号连接到光循环器。
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公开(公告)号：KR1020110065298A
公开(公告)日：2011-06-15
申请号：KR1020100082142
申请日：2010-08-24
Applicant: 한국전자통신연구원
CPC classification number: H04L25/03019 , H04L27/02
Abstract: PURPOSE: An adaptive equalizer of a remodulated OOK(On-Off Keying) signal and the error detection method of the equalizer are provided to perform optimized equalization suited to the property of the remodulated OOK signal. CONSTITUTION: A signal processing unit(110) equalizes a signal. An error detection unit(120) calculates different between the outputted equalized signal of the signal processing unit and an original signal. The error detecting unit produces an error. A coefficient control unit(130) outputs a value controlling the coefficient value of a filter necessary to the equalization of the signal processing unit on the basis of the error of the error detecting unit.
Abstract translation: 目的：提供重新调制的OOK（开关键控）信号的自适应均衡器和均衡器的误差检测方法，以执行适合于重新调制的OOK信号的特性的优化均衡。 构成：信号处理单元（110）使信号均衡。 误差检测单元（120）计算信号处理单元的输出的均衡信号与原始信号之间的不同。 错误检测单元产生错误。 系数控制单元（130）基于误差检测单元的误差输出控制信号处理单元的均衡所需的滤波器的系数值的值。
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75.发明公开
公开(公告)号：KR1020110018784A
公开(公告)日：2011-02-24
申请号：KR1020090076414
申请日：2009-08-18
Applicant: 한국전자통신연구원
IPC: H04B10/2581 , H04B10/291
CPC classification number: H04B10/2916
Abstract: PURPOSE: A remotely amplified passive optical network system, OLT(Optical Line Terminal), RN(Remote Node), optical amplifying method and a gain clamping method thereof are provided to offer an even signal gain. CONSTITUTION: A passive optical network system comprises an OLT, and RN. The OLT amplifies the optical signal according to pump the optical transmission line through the pump light. A gain medium is pumped with the transmitted pump light and the optical signal is amplified again. A passive optical network generates pump light and transmits the light to an optical transmission line.
Abstract translation: 目的：提供远程放大无源光网络系统，OLT（Optical Line Terminal），RN（Remote Node），光放大方法及其增益钳位方式，提供均匀的信号增益。 构成：无源光网络系统包括OLT和RN。 根据通过泵浦光泵浦光传输线，OLT放大光信号。 增益介质用传输的泵浦光泵浦，光信号再次放大。 无源光网络产生泵浦光并将光传输到光传输线。
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Patent Agency Ranking
公开(公告)号：KR1020100073004A
公开(公告)日：2010-07-01
申请号：KR1020080131578
申请日：2008-12-22
Applicant: 한국전자통신연구원
IPC: H04B10/40 , H04B10/2581
CPC classification number: H04B10/272 , H04J14/0246 , H04J14/025 , H04J14/0252 , H04J14/0254 , H04J14/0282 , H04J2014/0253
Abstract: PURPOSE: An optical transceiver device of a compound PON(Passive Optical Network) is provided to install an active optical element and a media access control unit in the subscriber side. CONSTITUTION: The first receiver(20) and the first transmission unit(23) perform the wavelength conversion of the first optical signal received from a station. The first receiver and the first transmission unit transmit the wavelength converted first optical signal to at least one subscriber terminal. The second receiver(22) and the second transmission unit(21) perform the wavelength conversion of the second optical signal received from at least one subscriber terminal. The second receiver and the second transmission unit transmit the wavelength converted second optical signal to the station. An MAC(Media Access Control) unit(24) sets up the time frame which at least one subscriber terminal can transmit the second optical signal.
Abstract translation: 目的：提供复合PON（被动光网络）的光收发器装置，在用户侧安装有源光学元件和媒体访问控制单元。 构成：第一接收机（20）和第一发送单元（23）对从站接收的第一光信号进行波长转换。 第一接收机和第一传输单元将波长转换的第一光信号发送到至少一个用户终端。 第二接收器（22）和第二传输单元（21）执行从至少一个用户终端接收的第二光信号的波长转换。 第二接收机和第二传输单元将波长转换的第二光信号发送到站。 MAC（媒体访问控制）单元（24）设置至少一个用户终端可以发送第二光信号的时间帧。
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公开(公告)号：KR1020100070692A
公开(公告)日：2010-06-28
申请号：KR1020080129349
申请日：2008-12-18
Applicant: 한국전자통신연구원
IPC: H04B10/2581 , H04J14/02 , H04B10/00
CPC classification number: H04J14/0282 , H04B10/506 , H04J14/02 , H04J14/06
Abstract: PURPOSE: A seed light output module of a single longitudinal mode oscillator light source base is provided to supply a light route penalty by a rayleigh inverse scattering and a retroflection to reduce in a single optical fiber bidirectional transmission. CONSTITUTION: An RF signal generator(107) generates a sine curve. An RF signal divider(108) distributes the created RF signal. An RF amplifierses(109,110) amplify the divided RF signal. A polarizing beam combiner(111) combines the light forged in a phase modulator. The polarized light beam combiner supplies a seed light output.
Abstract translation: 目的：提供单个纵模振荡器光源基座的种子光输出模块，通过雷利反向散射和反射来提供光路损耗，以减少单个光纤双向传输。 构成：RF信号发生器（107）产生正弦曲线。 RF信号分配器（108）分配所创建的RF信号。 RF放大器（109,110）放大分频RF信号。 偏振光束组合器（111）组合在相位调制器中伪造的光。 偏振光束组合器提供种子光输出。
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公开(公告)号：KR100960110B1
公开(公告)日：2010-05-27
申请号：KR1020080060356
申请日：2008-06-25
Applicant: 한국전자통신연구원
IPC: H04B10/27 , H04B10/2581
CPC classification number: H04B10/25754 , H04J14/0204 , H04J14/0209 , H04J14/0213 , H04J14/0216 , H04J14/0232 , H04J14/025 , H04J14/028 , H04J14/0282 , H04J2014/0253
Abstract: An optical backhaul network for a wireless broadband service is provided. The optical backhaul network for a wireless broadband service includes: a plurality of optical network units for outputting an uplink optical signal having a multiplexed wavelength; an optical line termination for outputting a downlink optical signal of a single mode in order to transmit the downlink optical signal to the plurality of the optical network units in a broadcasting form; and a plurality of remote nodes for outputting a part of the downlink optical signal to the plurality of the optical network units and for outputting the uplink optical signal to the optical line termination. Therefore, one center and a plurality of access points can be efficiently connected.
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公开(公告)号：KR1020090066153A
公开(公告)日：2009-06-23
申请号：KR1020070133784
申请日：2007-12-18
Applicant: 한국전자통신연구원
IPC: H04B10/2581 , H04J14/02
CPC classification number: H04J14/0282 , H04J14/0246 , H04J14/0247 , H04J14/0252 , H04J2014/0253
Abstract: WDM(wavelength division multiplexing)-PON(Passive Optical Network) system in which the loss according to the spectrum slicing is prevented is provided to prevent the loss by spectrum allocation by transmitting spectrum divided optical. An OLT(Optical Line Terminal)(200) is positioned in station. The optical signal is transmitted to the subscriber side. The optical signal is received from the subscriber side. A seed optical source module(100) is positioned in station. And the seed light consisting of a plurality of wavelengths in which the spectrum is divided is supplied to corresponding optical transmitters of OLT. An ONU(optical Line Unit) converts the optical signal received from OLT into the signal.
Abstract translation: 提供了防止根据频谱限幅的损耗的WDM（波分复用）-PON（被动光网络）系统，以防止通过发送频谱分割光学的频谱分配丢失。 OLT（光线路终端）（200）位于站内。 光信号被发送到用户侧。 从用户侧接收光信号。 种子光源模块（100）位于站中。 并且将由频谱分割的多个波长组成的种子光提供给OLT的对应的光发射机。 ONU（光线路单元）将从OLT接收的光信号转换为信号。
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公开(公告)号：KR100609697B1
公开(公告)日：2006-08-08
申请号：KR1020040039985
申请日：2004-06-02
Applicant: 한국전자통신연구원
IPC: H04B10/071 , H04B10/25 , H04B10/07
CPC classification number: H04B10/071 , G01M11/3145
Abstract: 광선로 감시 시스템 및 그 방법이 개시된다. OTDR은 감시광을 광선로에 입사한 후 감시광에 의해 발생하는 반사광 또는 역방향 산란광의 세기를 측정하여 광선로의 이상 유무를 감시한다. 광증폭부는 광선로에 입사된 감시광을 이득 고정된 광증폭기를 이용하여 증폭하며, 필터부는 광 증폭부에서 발생하는 역방향 자발 방출광 중 감시광의 파장대역 이외의 파장 대역 성분을 제거한다. 이로써, OTDR의 광선로 감시거리 확장을 위해 사용하는 광증폭기에서 발생하는 역방향 자발 방출광에 의한 OTDR의 성능 저하를 방지할 수 있다.
감시광, 이득 고정된 광 증폭기, 역방향 자발 방출광, OTDR
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