公开(公告)号：US06424664B1

公开(公告)日：2002-07-23

申请号：US09497344

申请日：2000-02-03

申请人： Wang-Yuhl Oh ,  Joon-Hak Bang ,  Sang-Soo Lee ,  Hyun-Jae Lee ,  Je-Soo Ko ,  Wan-Seok Seo

发明人： Wang-Yuhl Oh ,  Joon-Hak Bang ,  Sang-Soo Lee ,  Hyun-Jae Lee ,  Je-Soo Ko ,  Wan-Seok Seo

IPC分类号： H01S330

CPC分类号： H01S3/302 ,  H01S3/067 ,  H01S3/06791 ,  H01S3/08086 ,  H01S3/1608

摘要： Disclosed is a Brillouin erbium-fiber laser system producing multiwavelengths with a dual spacing of 10 GHz and 20 GHz. The Brillouin erbium-fiber laser system includes: a Sagnac reflector generating even- and odd-order Strokes waves by launching input lights, a first unit forming a first resonator with the Sagnac reflector, wherein the first unit is coupled to a first directional coupler in the Sagnac reflector, a second unit forming a second resonator with the Sagnac reflector, wherein the second unit is coupled to the first directional coupler in the Sagnac reflector, and a third unit for inputting Brillouin pump light into one of first and the second units, whereby the optical fiber laser system outputs multiwavelengths with a dual spacing.

摘要翻译： 公开了一种布里渊铒光纤激光系统，其产生具有10GHz和20GHz的双间隔的多波长。 布里渊铒光纤激光系统包括：Sagnac反射器，通过发射输入光产生偶数和奇数阶冲击波，第一单元与Sagnac反射器形成第一谐振器，其中第一单元耦合到第一定向耦合器 Sagnac反射器，形成具有Sagnac反射器的第二谐振器的第二单元，其中第二单元耦合到Sagnac反射器中的第一定向耦合器，以及第三单元，用于将布里渊泵浦光输入第一和第二单元之一， 由此光纤激光系统以双重间隔输出多波长。

公开(公告)号：US07092635B2

公开(公告)日：2006-08-15

申请号：US09739903

申请日：2000-12-20

申请人： Sang-Soo Lee ,  Je-Soo Ko ,  Hyun-Jae Lee ,  Wang-Yuhl Oh ,  Dong-Yole Choi ,  Wan-Seok Seo

发明人： Sang-Soo Lee ,  Je-Soo Ko ,  Hyun-Jae Lee ,  Wang-Yuhl Oh ,  Dong-Yole Choi ,  Wan-Seok Seo

IPC分类号： H04J14/02

CPC分类号： H04B10/2537

摘要： The present invention discloses an apparatus for suppressing stimulated Brillouin scattering and the method thereof that a threshold fiber input power is raised in order to prevent loss of an inputted light by stimulated Brillouin scattering being generated in a case that a signal having a strong intensity is inputted to the optical fiber and so a light signal having more strong intensity can be inputted to the optical fiber. The apparatus for suppressing the SBS includes a plurality of first transmission unit, each of which has a wavelength separation, for transmitting information signals through a signal channel; and a second transmission unit for generating and transmitting a supervisory signal of which a modulation frequency and an intensity generates a phase modulation to the plurality of information signals, through a supervisory channel. The modulation frequency and the intensity of the supervisory signal are modulated in phase to the information signals by a cross phase modulation effect, thereby broadening a line width of the information signal.

摘要翻译： 本发明公开了一种用于抑制受激布里渊散射的装置及其提高阈值光纤输入功率的方法，以便在输入强烈强度的信号的情况下产生受激布里渊散射时输入的光的损失 可以将光强度更强的光信号输入到光纤。 用于抑制SBS的装置包括多个具有波长分离的第一传输单元，用于通过信号信道发送信息信号; 以及第二传输单元，用于通过监控信道生成和发送调制频率和强度对多个信息信号产生相位调制的监控信号。 监控信号的调制频率和强度通过交叉相位调制效应相位调制到信息信号，从而拓宽信息信号的线宽。

公开(公告)号：US20050141582A1

公开(公告)日：2005-06-30

申请号：US10880766

申请日：2004-06-28

申请人： Sang-Soo Lee ,  Heuk Park ,  Hyunwoo Cho ,  Sang-Kyu Lim ,  Je-Soo Ko

发明人： Sang-Soo Lee ,  Heuk Park ,  Hyunwoo Cho ,  Sang-Kyu Lim ,  Je-Soo Ko

IPC分类号： H04B10/04 ,  G02F2/00 ,  H01S3/067 ,  H01S3/097 ,  H01S3/30 ,  H03D9/00 ,  H04B10/145

CPC分类号： H01S3/302 ,  G02F2/002 ,  H01S3/067 ,  H03D9/00 ,  H04B10/50

摘要： An apparatus and a method for generating an optical carrier is disclosed. The apparatus includes: a light source generating a pump light; a SBS generator for stimulated Brillouin scattering the pump light to generate a stokes light from the light source; an attenuator for controlling an amplitude of the pump light from the light source to generate an amplitude controlled pump light; and a detector for heterodyne beating the stokes light and the amplitude controlled pump light to generate an optical carrier.

摘要翻译： 公开了一种用于产生光学载体的装置和方法。 该装置包括：产生泵浦光的光源; 用于受激布里渊的SBS发生器将泵浦光散射以产生来自光源的斯托克斯光; 衰减器，用于控制来自光源的泵浦光的振幅，以产生振幅控制的泵浦光; 以及用于外差打击斯托克斯光和振幅控制的泵浦光的检测器，以产生光学载体。

公开(公告)号：US20050129411A1

公开(公告)日：2005-06-16

申请号：US10876436

申请日：2004-06-24

申请人： Hyunwoo Cho ,  Sang-Soo Lee ,  Sang-Kyu Lim ,  Jyung-Chan Lee ,  Seung-Il Myong ,  Je-Soo Ko

发明人： Hyunwoo Cho ,  Sang-Soo Lee ,  Sang-Kyu Lim ,  Jyung-Chan Lee ,  Seung-Il Myong ,  Je-Soo Ko

IPC分类号： H04B10/04 ,  G02F1/01 ,  H04B10/155 ,  G02F1/035 ,  H04B10/00

CPC分类号： H04B10/505 ,  G02F1/0123 ,  H04B10/50575 ,  H04B10/58

摘要： Provided are an apparatus for optimizing bias voltage of an electro-optic modulator, a method therefor, and an optical transmission system using the method. The present research provides a bias voltage optimizing apparatus of an electro-optic modulator that can stabilize bias voltage supplied to the electro-optic modulator through automatic bias voltage initialization control by considering the point that the form of an optical output signal and the intensity of a clock component are changed according to the bias voltage of the electro-optic modulator, a method therefor and an optical transmission system using the method. The apparatus includes: a clock extracting unit for extracting a clock frequency component from the frequency components in a wideband spectrum of the electro-optic modulator; a control unit for finding a point of the lowest electric intensity by detecting an electric intensity of the extracted frequency component and controlling the bias voltage adaptively by changing the bias voltage; and a bias voltage adjusting unit for controlling the bias voltage of the electro-optic modulator under the control of the bias voltage controlling unit.

摘要翻译： 提供一种用于优化电光调制器的偏置电压的装置，其方法和使用该方法的光传输系统。 本研究提供了一种电光调制器的偏置电压优化装置，通过考虑光输出信号的形式和光输出信号的强度，可以通过自动偏置电压初始化控制来稳定提供给电光调制器的偏置电压 时钟分量根据电光调制器的偏置电压，其方法和使用该方法的光传输系统而改变。 该装置包括：时钟提取单元，用于从电光调制器的宽带频谱中的频率分量中提取时钟频率分量; 控制单元，用于通过检测所提取的频率分量的电强度并通过改变所述偏置电压自适应地控制所述偏置电压来找到最低电强度的点; 以及偏置电压调整单元，用于在偏置电压控制单元的控制下控制电光调制器的偏置电压。

公开(公告)号：US07142570B2

公开(公告)日：2006-11-28

申请号：US10880766

申请日：2004-06-28

申请人： Sang-Soo Lee ,  Heuk Park ,  Hyunwoo Cho ,  Sang-Kyu Lim ,  Je-Soo Ko

发明人： Sang-Soo Lee ,  Heuk Park ,  Hyunwoo Cho ,  Sang-Kyu Lim ,  Je-Soo Ko

IPC分类号： G02F1/35 ,  G01S2/02 ,  H01S3/00 ,  H01S3/10 ,  H01S3/092

CPC分类号： H01S3/302 ,  G02F2/002 ,  H01S3/067 ,  H03D9/00 ,  H04B10/50

摘要： An apparatus and a method for generating an optical carrier is disclosed. The apparatus includes: a light source generating a pump light; a SBS generator for stimulated Brillouin scattering the pump light to generate a stokes light from the light source; an attenuator for controlling an amplitude of the pump light from the light source to generate an amplitude controlled pump light; and a detector for heterodyne beating the stokes light and the amplitude controlled pump light to generate an optical carrier.

摘要翻译： 公开了一种用于产生光学载体的设备和方法。 该装置包括：产生泵浦光的光源; 用于受激布里渊的SBS发生器将泵浦光散射以产生来自光源的斯托克斯光; 衰减器，用于控制来自光源的泵浦光的振幅，以产生振幅控制的泵浦光; 以及用于外差打击斯托克斯光和振幅控制的泵浦光的检测器，以产生光学载体。

公开(公告)号：US20140079401A1

公开(公告)日：2014-03-20

申请号：US14118922

申请日：2012-05-25

申请人： Han-Hyub Lee ,  Jie-Hyun Lee ,  Eon-Sang Kim ,  Sang-Soo Lee

发明人： Han-Hyub Lee ,  Jie-Hyun Lee ,  Eon-Sang Kim ,  Sang-Soo Lee

IPC分类号： H04B10/079 ,  H04J14/02

CPC分类号： H04J14/0242 ,  H04B10/0795 ,  H04B10/2587 ,  H04J14/02 ,  H04J2014/0253

摘要： A wavelength-division multiplexing optical communication system and a method for measuring optical performance of an output signal for the system. The optical communication system includes: a service-provider device; a local node; and a plurality of subscriber devices. The service-provider device includes: a plurality of first optical transceivers; a first optical multiplexer/demultiplexer (OD/OM) connected to the plurality of first optical transceivers; and a seed-light source providing seed light. Each subscriber device includes a second optical transceiver. The local node connects the service-provider device and the plurality of subscriber devices to each other using a DWDM link comprising: a second multiplexer/demultiplexer (OD/OM); and a single-mode optical fiber for transmission. Here, the optical intensity of an output signal of the second optical transceiver is determined by compensating for the value of the loss caused when the output signal passes through the second OD/OM of the local node.

摘要翻译： 一种波分复用光通信系统和用于测量该系统的输出信号的光学性能的方法。 光通信系统包括：服务提供者设备; 一个本地节点; 和多个订户设备。 服务提供者设备包括：多个第一光收发器; 连接到所述多个第一光收发器的第一光复用器/解复用器（OD / OM）; 和提供种子光的种子光源。 每个用户设备包括第二光收发器。 本地节点使用DWDM链路将服务提供商设备和多个用户设备彼此连接，包括：第二多路复用器/解复用器（OD / OM）; 和用于传输的单模光纤。 这里，通过补偿当输出信号通过本地节点的第二OD / OM时引起的损耗的值来确定第二光收发器的输出信号的光强度。

公开(公告)号：US08243223B2

公开(公告)日：2012-08-14

申请号：US12649892

申请日：2009-12-30

申请人： Sang-Soo Lee

发明人： Sang-Soo Lee

IPC分类号： G02F1/1333

CPC分类号： G02F1/133308

摘要： A liquid crystal display device includes a liquid crystal panel; a backlight unit disposed under the liquid crystal panel and including a light source and an optical sheet, the optical sheet including a protrusion extending from two opposite sides; and a bottom frame under the backlight unit and including a counter part, the counter part including an opening such that the protrusion is inserted into the opening.

摘要翻译： 液晶显示装置包括液晶面板; 设置在所述液晶面板的下方并包括光源和光学片的背光单元，所述光学片包括从两个相对侧延伸的突出部; 以及在所述背光单元下方的底框，并且包括对置部，所述对置部包括开口，使得所述突起插入所述开口中。

公开(公告)号：US20120163819A1

公开(公告)日：2012-06-28

申请号：US13334108

申请日：2011-12-22

申请人： Sil-Gu MUN ,  Eui-Suk Jung ,  Sang-Soo Lee

发明人： Sil-Gu MUN ,  Eui-Suk Jung ,  Sang-Soo Lee

IPC分类号： H04J14/00

CPC分类号： H04J14/0282 ,  H04B10/25753 ,  H04J14/0257 ,  H04W88/08

摘要： A data transmission apparatus for use in a separate-type base station is provided. The data transmission apparatus includes: a digital unit configured to generate first data that includes transmission method information indicating a selected transmission method and data to be transmitted; a time-division synchronization control unit configured to, in response to the selected transmission method being time-division multiplexing (TDM), generate second data by including synchronization information for transmitting the first data using TDM in the first data; and a wavelength conversion unit configured to convert at least one of the first data and the second data into one or more wavelength optical signals using a predefined wavelength or a predefined group of wavelengths and transmit the wavelength optical signals to one or more radio stations.

摘要翻译： 提供了一种用于分离式基站中的数据传输装置。 数据发送装置包括：数字单元，被配置为生成包括指示所选择的发送方法和要发送的数据的发送方法信息的第一数据; 时分同步控制单元，被配置为响应于所选择的传输方法是时分复用（TDM），通过在第一数据中包括使用TDM发送第一数据的同步信息来生成第二数据; 以及波长转换单元，被配置为使用预定波长或预定波长组将所述第一数据和所述第二数据中的至少一个转换成一个或多个波长光信号，并将所述波长光信号发射到一个或多个无线电台。

公开(公告)号：US06603356B1

公开(公告)日：2003-08-05

申请号：US10047960

申请日：2002-01-14

申请人： Chun-Sup Kim ,  Ara Bicakci ,  Sang-Soo Lee

发明人： Chun-Sup Kim ,  Ara Bicakci ,  Sang-Soo Lee

IPC分类号： H03F326

CPC分类号： H03F1/308 ,  H03F3/3064

摘要： A method and circuit control a quiescent current of an amplifier including a preamplifier, error amplifiers, and output devices driven by the error amplifiers, the error amplifiers having an input-referred offset voltage. The method includes (a) applying a calibration voltage to an input of the error amplifiers, (b) calibrating a quiescent current of the output devices by changing the calibration voltage so that the calibrated quiescent current has a predetermined current value, the calibration voltage corresponding to the calibrated quiescent current being set as a correction voltage, and (c) operating the amplifier with the correction voltage applied to the input of the error amplifiers. The circuit includes a correction voltage generator supplying a correction voltage to the error amplifier input, a quiescent current detector detecting the quiescent current, and a calibration circuit adjusting the correction voltage so that the quiescent current is calibrated to a predetermined current value.

摘要翻译： 一种方法和电路控制包括由误差放大器驱动的前置放大器，误差放大器和输出装置的放大器的静态电流，误差放大器具有输入参考偏移电压。 该方法包括（a）将校准电压施加到误差放大器的输入端，（b）通过改变校准电压来校准输出装置的静态电流，使得校准的静态电流具有预定的电流值，校准电压对应 将校正的静态电流设置为校正电压，以及（c）使用施加到误差放大器的输入的校正电压来操作放大器。 该电路包括校正电压发生器，其向误差放大器输入端提供校正电压，静态电流检测器检测静态电流;校准电路调节校正电压，使得静态电流被校准到预定电流值。

公开(公告)号：US06498534B1

公开(公告)日：2002-12-24

申请号：US09882497

申请日：2001-06-15

申请人： Chun-Sup Kim ,  Sang-Soo Lee

发明人： Chun-Sup Kim ,  Sang-Soo Lee

IPC分类号： H03G320

CPC分类号： H03F1/025 ,  H03F1/0277 ,  H03G3/3026

摘要： A variable-gain amplifier circuit includes an input port, an output port, and first and second amplifiers coupled therebetween. The first amplifier includes a first amplifier path having a first amplification factor, effective when the input signal has a voltage level in a first range, and a second amplifier path having a second amplification factor greater than the first amplification factor, effective when the input signal has a voltage level in a second range including voltages of a first polarity greater than that in the first range. The second amplifier includes a third amplifier path having the first amplification factor, effective when the input signal has a voltage level in a third range, and a fourth amplifier path having the second amplification factor, effective when the input signal has a voltage level in a fourth range including voltages of a second polarity greater than that in the third range.

摘要翻译： 可变增益放大器电路包括输入端口，输出端口以及耦合在其间的第一和第二放大器。 第一放大器包括具有第一放大因子的第一放大器路径，当输入信号具有在第一范围内的电压电平时有效;以及第二放大器路径，具有大于第一放大因子的第二放大系数，当输入信号 具有包括第一极性大于第一范围的电压的第二范围内的电压电平。 第二放大器包括具有第一放大因子的第三放大器路径，当输入信号具有第三范围内的电压电平时有效;以及第四放大器路径，具有第二放大因子，当输入信号具有第 第四范围包括大于第三范围的第二极性的电压。