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公开(公告)号：KR1020030086808A
公开(公告)日：2003-11-12
申请号：KR1020020024994
申请日：2002-05-07
Applicant: 한국전자통신연구원
IPC: H04B10/291 , H04B10/2581
CPC classification number: H04B10/2942
Abstract: PURPOSE: A fiber optical amplification method and apparatus for gain control is provided to adjust the strength of a pump light by comparing the output optical signal of the first layer EDFA(Erbium Doping Fiber optical Amplifier) with the output optical signal of the second layer EDFA. CONSTITUTION: A control part collects data for the driving voltage of each pump luminous source necessary to control the amplification gain of an EDFA(900). If the data collection is completed, the control part sets up initial values(901). If an optical signal is inputted to an input port, the first light drop unit drops part of the input optical signal. The first optical to electric converter converts the dropped optical signal into an electrical signal. The control part measures the strength of the optical signal from the strength of the electrical signal indirectly(902). Based on the measured strength, the control part estimates the number of channels the input optical signal has(903). The first EDF amplifies the input optical signal using a pump light pumped by the first forward pump luminous source and the first backward pump luminous source. The second light drop unit drops part of the optical signal amplified at the first EDF. The second optical to electric converter converts the dropped optical signal into an electrical signal and outputs it to the control part. The control part measures the strength of the optical signal from the strength of the inputted electrical signal, compares it with the strength of the input optical signal, and calculates the first gain(904). The control part adjusts the driving voltage of the first forward pump luminous source so that the first gain can get identical to the first target gain(905).
Abstract translation: 目的：提供一种用于增益控制的光纤放大方法和装置，用于通过将第一层EDFA（掺铒光纤放大器）的输出光信号与第二层EDFA的输出光信号进行比较来调节泵浦光的强度 。 构成：控制部分收集控制EDFA（900）的放大增益所需的每个泵浦光源的驱动电压的数据。 如果数据收集完成，则控制部分设置初始值（901）。 如果光信号被输入到输入端口，则第一光降单元丢弃输入光信号的一部分。 第一个光电转换器将掉落的光信号转换成电信号。 控制部分间接地测量来自电信号的强度的光信号的强度（902）。 基于测量的强度，控制部分估计输入光信号具有的通道数（903）。 第一EDF使用由第一正向泵浦光源和第一反向泵浦光源泵浦的泵浦光来放大输入光信号。 第二光降单元丢弃在第一EDF放大的光信号的一部分。 第二光电转换器将丢弃的光信号转换成电信号并将其输出到控制部分。 控制部根据输入的电信号的强度来测量光信号的强度，将其与输入光信号的强度进行比较，并计算第一增益（904）。 控制部分调节第一正向泵浦光源的驱动电压，使得第一增益可以获得与第一目标增益相同（905）。
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公开(公告)号：KR100398361B1
公开(公告)日：2003-09-19
申请号：KR1020010073039
申请日：2001-11-22
Applicant: 한국전자통신연구원
IPC: G02B6/00
CPC classification number: H01S3/06758 , H01S3/094011 , H01S2301/04
Abstract: Disclosed herein is an Erbium-Doped Fiber Amplifier (EDFA) used in a WDM (Wavelength Division Multiplexing) transmission system. In accordance with the present invention, a variation of the intensity of the output optical signal in the optical fiber amplifier, which results from an gain imbalance due to different wavelength distribution caused by the gain inhomogeneity characteristics, can be prevented by examining the laser diode sensitive to the gain inhomogeneity characteristics in the erbium-doped optical fiber amplifier, constructing the filter having spectrum characteristics capable of suppressing the gain imbalance of the optical signal outputted from the optical fiber amplifier, and driving the sensitive laser diode using the electrical signal obtained by branching some of the input optical signal and passing the branched optical signal through the filter and driving other laser diodes with a constant voltage value.
Abstract translation: 本文公开了用于WDM（波分复用）传输系统中的掺铒光纤放大器（EDFA）。 根据本发明，可以通过检查激光二极管敏感度来防止光纤放大器中输出光信号强度的变化，该变化是由于增益不均匀性特性引起的不同波长分布引起的增益不平衡所引起的 增益掺铒光纤放大器中的增益不均匀特性，构造具有能够抑制从光纤放大器输出的光信号的增益不平衡的光谱特性的滤波器，以及使用通过分支获得的电信号来驱动灵敏激光二极管 输入光信号的一部分，并将分支的光信号通过滤波器并驱动其他具有恒定电压值的激光二极管。
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公开(公告)号：KR1020010054654A
公开(公告)日：2001-07-02
申请号：KR1019990055546
申请日：1999-12-07
Applicant: 한국전자통신연구원
IPC: G01J3/28
CPC classification number: G01J3/26 , G01J3/2823 , G01J2003/2826 , G01M11/331
Abstract: PURPOSE: A device and a method for measuring color dispersion using an interferometer are provided to measure color dispersion of optical fiber using the interferometer, which is little sensible to the kind and length of the optical fiber and a change the circumstances. CONSTITUTION: A device for measuring color dispersion using an interferometer includes an optical distributor(121), an optical fiber(124) measured, a standard optical fiber(125) and a PZT(Piezo_electric Translator)(123). The optical distributor divides optical signal emitted from a light source(110) into two. One of the divided optical signals passes the optical fiber and the other optical signal passes the standard optical fiber to form a standard path. The PZT winds the standard optical fiber and changes the length of the standard optical fiber.
Abstract translation: 目的：提供一种使用干涉仪测量色散的装置和方法，以使用干涉仪测量光纤的色散，这对光纤的种类和长度几乎不敏感，并改变了环境。 构成：使用干涉仪测量色散的装置包括光分配器（121），测量的光纤（124），标准光纤（125）和PZT（压电转换器）（123）。 光分配器将从光源（110）发射的光信号分成两部分。 分离的光信号中的一个通过光纤，另一个光信号通过标准光纤以形成标准路径。 PZT卷绕标准光纤，改变标准光纤的长度。
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公开(公告)号：KR101872566B1
公开(公告)日：2018-06-28
申请号：KR1020150056500
申请日：2015-04-22
Applicant: 한국전자통신연구원
IPC: H04J14/02 , H04B10/2581
CPC classification number: H04J14/0278 , H04B10/272 , H04J14/023 , H04J14/0241
Abstract: 다중파장수동형광 네트워크시스템을위한파장가변광망유닛및 이의동작방법이개시된다. 일실시예에따른파장가변광망유닛(ONU)은하향신호의파장채널과상향신호의파장채널이모두투과가가능한주기적인파장투과특성을가지며또한투과되는파장이가변될수 있는주기적파장가변필터, 상향신호파장대역과하향신호파장대역을나누기위한파장분배기, 소정의하향신호파장채널에정렬된주기적파장가변필터를투과하여파장분배기를통해전달되는하향신호를검출하기위한광검출소자, 및주기적파장가변필터의정렬된하향신호파장채널에기초하여결정되는파장채널을갖는상향신호를파장분배기로출력하는파장가변송신기를포함한다.
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Patent Agency Ranking
公开(公告)号：KR1020170006743A
公开(公告)日：2017-01-18
申请号：KR1020150097855
申请日：2015-07-09
Applicant: 한국전자통신연구원
Abstract: 파장-공간-시간광 스위칭을위한전광스위칭네트워크장치및 그방법이개시된다. 본발명의일 실시예에따른전광스위칭네트워크장치는, 전광스위칭패브릭으로패킷을전송하거나전광스위칭패브릭으로부터패킷을수신하는다수의톱오브랙(Top of Rack: ToR, 이하 ToR이라칭함) 스위치와, 소스측 ToR 스위치로부터수신된광 패킷을전광스위칭(all-optical switching)하여목적지측 ToR 스위치로전송하는배열도파로격자라우터(Arrayed Waveguide Grating Router: AWGR, 이하 AWGR이라칭함)가다수개의어레이형태로공간상에배치되는전광스위칭패브릭을포함한다.
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公开(公告)号：KR1020160100107A
公开(公告)日：2016-08-23
申请号：KR1020150022660
申请日：2015-02-13
Applicant: 한국전자통신연구원
IPC: H04B10/071 , H04B10/077
CPC classification number: G01M11/3154 , G02B6/293 , G02B6/4246 , H04B10/071 , H04B10/0771 , H04B2210/074
Abstract: 듀얼광원을이용한광선로감시장치에관한것으로, 일실시예에따르면, 감시장치는서로다른파장의광을출력하는제1 광원및 제2 광원을포함하고, 제1 광원및 제2 광원을구동하여광 선로에제1 감시광및 제2 감시광을전파하는광송신기및 광선로에서반사되는제1 반사광및 제2 반사광을수신하는제1 광수신모듈및 제2 광수신모듈을포함하는광수신기를포함할수 있다.
Abstract translation: 本发明涉及一种使用双光源监测光线路的设备。 根据本发明的一个实施例，该装置包括一个光发射器，它包括第一光源和输出不同波长的光的第二光源，驱动第一光源和第二光源并传播第一监视光和 对光线路的第二监视光，以及包括第一光接收模块和第二光接收模块的光接收器，所述第一光接收模块和第二光接收模块接收在所述光线路上反射的第一反射光和第二反射光。 因此，可以以低成本和宽带脉冲宽度实现高精度。
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公开(公告)号：KR1020160096470A
公开(公告)日：2016-08-16
申请号：KR1020150018180
申请日：2015-02-05
Applicant: 한국전자통신연구원
IPC: H04B10/071
CPC classification number: H03G3/3084 , H04B10/071 , H04B2210/07
Abstract: 송신후 광선로에서반사되어수신되는신호의트레이스를분석하여광 선로의장애를검출하는광 선로감시장치가개시된다. 이광 선로감시장치는가변이득증폭부와아날로그/디지털변환부및 제어부를포함한다. 가변이득증폭부는수신신호에대해이득증폭한다. 아날로그/디지털변환부는이득증폭된신호를디지털신호로변환한다. 그리고제어부는디지털로변환된신호트레이스를분석하여그 분석결과에따라가변이득증폭부의이득을조절한다.
Abstract translation: 本发明的目的是防止OTDR迹线信号的信噪比的降低通过尽可能利用ADC的有效面积而发生，而与PAR值无关。 公开了一种光线路监视装置，用于通过在发送后通过在光线路中反射而接收到的信号的轨迹来检测光线路的缺陷。 光线路监视装置包括：可变增益放大单元; 模拟/数字转换单元; 和控制单元。 可变增益放大单元放大接收信号的增益。 模拟/数字转换单元将增益放大信号转换为数字信号。 并且控制单元分析数字转换信号的轨迹，并根据分析结果控制可变增益放大单元的增益。
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公开(公告)号：KR1020140062694A
公开(公告)日：2014-05-26
申请号：KR1020130136874
申请日：2013-11-12
Applicant: 한국전자통신연구원
IPC: H04B10/572
Abstract: The present invention relates to a variable wavelength optic transmitter which includes an optical array unit which is composed of a plurality of light sources with variable wavelengths, an optical driving unit which generates a bias current by receiving an electrical signal from an external circuit and inputs the bias current to the optical array unit, and a control unit which controls the amplitude of a current inputted to the optical array unit by controlling the optical driving unit.
Abstract translation: 本发明涉及一种可变波长光发射机，其包括由多个具有可变波长的光源组成的光学阵列单元，光学驱动单元，其通过从外部电路接收电信号而产生偏置电流，并输入 偏转电流到光学阵列单元，以及控制单元，其通过控制光学驱动单元来控制输入到光学阵列单元的电流的幅度。
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