公开(公告)号：US20050128555A1

公开(公告)日：2005-06-16

申请号：US10863741

申请日：2004-06-07

申请人： Youn Jang ,  Kwang Kim ,  Jyung Lee ,  Seung Myong

发明人： Youn Jang ,  Kwang Kim ,  Jyung Lee ,  Seung Myong

IPC分类号： H04B10/18 ,  G02B26/00 ,  G02F1/00 ,  G02F1/01 ,  H04B10/155

CPC分类号： H04B10/50595 ,  G02F1/0123 ,  H04B10/505 ,  H04B10/5051 ,  H04B10/50575 ,  H04B10/508 ,  H04B10/5162 ,  H04B10/5165 ,  H04B2210/003

摘要： The present invention relates to an apparatus and method for automatically correcting a bias voltage for a carrier suppressed pulse generating modulator using the phase distribution of the output pulses, which automatically detects an optimal bias voltage for the carrier suppressed pulse generating modulator and stabilizes the bias voltage. In the bias voltage automatic correction method and apparatus of the present invention, an optimal bias voltage for the modulator is set to a bias voltage that is obtained when mean power of an optical signal output from the modulator is highest. The varying direction of the bias voltage is detected on the basis of the phase variations in the output optical signal of the modulator according to the bias voltage variations is detected, and the bias voltage is corrected oppositely to the varying direction of the bias voltage.

摘要翻译： 本发明涉及一种使用输出脉冲的相位分布自动校正载波抑制脉冲发生调制器的偏置电压的装置和方法，其自动检测载波抑制脉冲发生调制器的最佳偏置电压并稳定偏置电压 。 在本发明的偏置电压自动校正方法和装置中，将调制器的最佳偏置电压设置为当从调制器输出的光信号的平均功率最高时获得的偏置电压。 根据检测到的偏置电压变化，基于调制器的输出光信号的相位变化来检测偏置电压的变化方向，并且偏置电压与偏置电压的变化方向相反地校正。

公开(公告)号：US20050117905A1

公开(公告)日：2005-06-02

申请号：US10917095

申请日：2004-08-11

申请人： Joon Lee ,  Seung Myong ,  Yun Cho ,  Jyung Lee ,  Kwangjoon Kim ,  Yool Kwon ,  Youn Jang ,  Moo Chu

发明人： Joon Lee ,  Seung Myong ,  Yun Cho ,  Jyung Lee ,  Kwangjoon Kim ,  Yool Kwon ,  Youn Jang ,  Moo Chu

IPC分类号： H04B10/02 ,  H04J3/16 ,  H04J14/02

CPC分类号： H04J3/1611 ,  H04J14/0226 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282

摘要： An optical transponder which can be reconfigured in accordance with various types of client networks is provided. A client network interface transceiver includes a connector comprising a first connection terminal providing a unit transmitting and receiving a plurality of first clock signals, a plurality of second clock signals, and a plurality of data signals to and from the digital wrapper; a second connection terminal providing a unit transmitting and receiving a supervision/control signal and a CPU-related signal to and from the supervision/controlling unit; and a power source terminal providing a unit to which a power source is supplied. The client network interface transceiver multiplexes a client signal transmitted from the client network or demultiplexes a signal transmitted from an optical transmission network, outputs the client signal and the signal, and can be replaced through a front panel of the optical transponder line card in accordance with types of client networks.

摘要翻译： 提供了可以根据各种类型的客户端网络重新配置的光学应答器。 客户端网络接口收发器包括连接器，该连接器包括第一连接端子，该第一连接端子提供发送和接收来自数字包装器的多个第一时钟信号，多个第二时钟信号和多个数据信号的单元; 第二连接端子，提供向监控/控制单元发送和接收监视/控制信号和与CPU相关的信号的单元; 以及电源端子，其提供供电电源的单元。 客户网络接口收发器多路复用从客户端网络发送的客户端信号或解复用从光传输网络发送的信号，输出客户端信号和信号，并且可以根据光接收机线卡的前面板更换 客户端网络类型。

公开(公告)号：US20050134398A1

公开(公告)日：2005-06-23

申请号：US10858925

申请日：2004-06-01

申请人： Seung Myong ,  Kwang Kim ,  Jyung Lee ,  Sang Lim

发明人： Seung Myong ,  Kwang Kim ,  Jyung Lee ,  Sang Lim

IPC分类号： H03H9/46 ,  H03H7/12

CPC分类号： H03H7/12

摘要： A tunable high-order Bessel low pass filter which is applied to a multi-rate duobinary generation system of an optical communication system. The tunable Bessel low pass filter comprises a variable inductor circuit including a plurality of variable inductors connected in series between an input signal terminal and an output signal terminal and controlled respectively by corresponding inductance control signals, a variable capacitor circuit including a plurality of variable capacitors connected respectively between corresponding connection nodes of the plurality of variable inductors of the variable inductor circuit and a ground terminal and controlled respectively by corresponding capacitance control signals, and a variable capacitor/inductor controller for outputting the corresponding capacitance control signals to the variable capacitors of the variable capacitor circuit and the corresponding inductance control signals to the variable inductors of the variable inductor circuit on the basis of preset values according to a given data rate, respectively. When the data rate of an application system is changed, the tunable Bessel low pass filter controls its filtering characteristics most appropriately to the changed data rate, so as to extend its application range and enhance performance and efficiency of the application system.

摘要翻译： 一种可调谐的高阶贝塞尔低通滤波器，适用于光通信系统的多速率二进制生成系统。 可调谐贝塞尔低通滤波器包括可变电感器电路，其包括串联连接在输入信号端子和输出信号端子之间的多个可变电感器，分别由相应的电感控制信号控制，可变电容器电路包括多个连接的可变电容器 分别在可变电感器电路的多个可变电感器的相应连接节点和接地端子之间分别由相应的电容控制信号控制;以及可变电容器/电感器控制器，用于将相应的电容控制信号输出到变量的可变电容器 电容器电路和相应的电感控制信号分别根据给定的数据速率在可变电感器的可变电感器的基础上进行预设值。 当应用系统的数据速率发生变化时，可调式贝塞尔低通滤波器最适合改变数据速率控制其滤波特性，从而扩展其应用范围，提高应用系统的性能和效率。

公开(公告)号：US20050135818A1

公开(公告)日：2005-06-23

申请号：US10815064

申请日：2004-03-31

申请人： Jyung Lee ,  Seung Myong ,  Joon Lee ,  Kwang Kim

发明人： Jyung Lee ,  Seung Myong ,  Joon Lee ,  Kwang Kim

IPC分类号： H04B10/06 ,  H04B10/158

CPC分类号： H04B10/695

摘要： Disclosed herein is an apparatus for controlling a decision threshold voltage to an optical receiver, which is capable of automatically controlling the decision threshold voltage to the optical receiver appropriately to signal level decision on the basis of a low-frequency band signal component of an output signal from the optical receiver. The apparatus is adapted to control the level of the decision threshold voltage to the optical receiver, which converts an input optical signal into an electrical signal. To this end, the apparatus comprises a voltage detector for branching off part of the output signal from the optical receiver and detecting a corresponding voltage, a differential comparator for comparing the voltage detected by the voltage detector with a reference voltage inputted thereto and outputting the resulting differential voltage, a low pass filter for filtering the differential voltage from the differential comparator at a predetermined low frequency band and supplying the resulting voltage as the threshold voltage to the optical receiver, and a voltage controller for controlling the reference voltage to the differential comparator on the basis of a differential voltage between the threshold voltage from the low pass filter and a predetermined voltage corresponding to a predetermined minimum bit error rate.

摘要翻译： 本文公开了一种用于控制光接收机的判定阈值电压的装置，其能够基于输出信号的低频带信号分量自动控制对光接收器的判定阈值电压以适当地进行信号电平判定 从光接收机。 该装置适于控制光接收器的判定阈值电平的电平，光接收器将输入光信号转换为电信号。 为此，该装置包括用于将来自光接收器的输出信号的一部分分支并检测相应电压的电压检测器，用于将由电压检测器检测到的电压与输入到其的参考电压进行比较的差分比较器， 差分电压，低通滤波器，用于在预定的低频带对差分比较器的差分电压进行滤波，并将得到的电压作为阈值电压提供给光接收器;以及电压控制器，用于控制差分比较器的参考电压 来自低通滤波器的阈值电压与对应于预定最小误码率的预定电压之间的差分电压的基础。

公开(公告)号：US20050135805A1

公开(公告)日：2005-06-23

申请号：US10903053

申请日：2004-07-30

申请人： Yun Cho ,  Joon Lee ,  Seung Myong ,  Jyung Lee ,  Kwangjoon Kim

发明人： Yun Cho ,  Joon Lee ,  Seung Myong ,  Jyung Lee ,  Kwangjoon Kim

IPC分类号： H04L12/24 ,  H04B10/02 ,  H04B10/08

CPC分类号： H04B10/00

摘要： Provided are an optical transponder that processes a G.709 frame that includes an overhead for operation, administration, and maintenance of an optical channel and an overhead for forward error correction, and a method of detecting and treating errors in optical-channel sublayers of the same. The method includes detecting an error signal or a maintenance signal from a G.709 frame that includes an overhead for operation, administration, and maintenance of an optical channel and an overhead for forward error correction; treating errors in a predetermined layer of a plurality of layers that requires error treatment when the error signal or the maintenance signal is detected or canceled; and investigating a reason for the errors in the predetermined layer.

摘要翻译： 提供了一种处理包括用于光信道的操作，管理和维护以及用于前向纠错的开销的开销的G.709帧的光学应答器，以及用于检测和处理光信道子层中的错误的方法 相同。 该方法包括检测来自G.709帧的误差信号或维护信号，该G.709帧包括用于操作，管理和维护光信道的开销和用于前向纠错的开销; 当检测或取消误差信号或维护信号时，处理需要错误处理的多个层的预定层中的错误; 并调查预定层错误的原因。

公开(公告)号：US20070134003A1

公开(公告)日：2007-06-14

申请号：US11405765

申请日：2006-04-18

申请人： Jyung Lee ,  Jun Lee ,  Hyun Lee ,  Kwang Kim

发明人： Jyung Lee ,  Jun Lee ,  Hyun Lee ,  Kwang Kim

IPC分类号： H04B10/00

CPC分类号： G02B6/4201 ,  G02B6/4256 ,  G02B6/4266 ,  G02B6/428

摘要： An optical transceiver case is provided. The optical transceiver case has an optical transmission/reception device and a PCB that operates the optical transmission/reception device. The optical transceiver case includes a lower plate and an upper plate. The lower plate supports the optical transmission/reception device and the printed circuit board, and includes handle grooves formed on both external sides of the lower plate to allow the optical transceiver case to be mounted/detached to/from an optical transmission/reception system's board. The upper plate is coupled to the lower plate to mount the optical transmission/reception device and the printed circuit board, and includes a protuberance embossed on an external upper surface of the upper plate in order to discharge heat generated from the optical transmission/reception device and the PCB to the outside. The optical transceiver case is easily mounted detached to/from on optical transmission/reception system's board and maintains a constant internal temperature.

摘要翻译： 提供光收发机外壳。 光收发机壳体具有操作光发送/接收装置的光发送/接收装置和PCB。 光收发机壳体包括下板和上板。 下板支撑光学发送/接收装置和印刷电路板，并且包括形成在下板的两个外侧上的手柄槽，以允许光收发器壳体从光学发送/接收系统板安装/分离 。 上板联接到下板以安装光学传输/接收装置和印刷电路板，并且包括浮雕在上板的外部上表面上的突起，以便排出从光发送/接收装置产生的热量 和PCB到外面。 光收发机外壳很容易安装在光传输/接收系统板上，从而保持恒定的内部温度。

公开(公告)号：US20070133634A1

公开(公告)日：2007-06-14

申请号：US11635196

申请日：2006-12-07

申请人： Joon Lee ,  Jyung Lee ,  Kwangjoon Kim

发明人： Joon Lee ,  Jyung Lee ,  Kwangjoon Kim

IPC分类号： H01S3/00

CPC分类号： H01S5/06832 ,  H01S5/0617

摘要： Provided are an apparatus and method for maintaining an constant extinction ratio of a laser diode (LD). The apparatus includes: an automatic power control circuit maintaining the constant optical power of the LD; a correlation deriver deriving correlations between a bias current of the LD and a modulation current to maintain the constant extinction ratio of the LD; and a modulation current control circuit controlling the modulation current to maintain constant the extinction ratio of the LD based on the correlations. The apparatus and method do not use a temperature sensor but derive a relationship between variances of a bias current of the LD and a modulation current according to temperature change, control the modulation current based on the relationship, and maintain the constant extinction ratio of the LD.

摘要翻译： 提供了一种用于维持激光二极管（LD）的恒定消光比的装置和方法。 该装置包括：保持LD的恒定光功率的自动功率控制电路; 导出LD的偏置电流与调制电流之间的相关性的相关性，以维持LD的恒定消光比; 以及调制电流控制电路，其基于相关性控制调制电流以维持LD的消光比。 该装置和方法不使用温度传感器，而是根据温度变化导出LD的偏置电流的方差和调制电流之间的关系，基于该关系控制调制电流，并且保持LD的恒定消光比 。

公开(公告)号：US20060133812A1

公开(公告)日：2006-06-22

申请号：US11134202

申请日：2005-05-20

申请人： Jyung Lee ,  Joon Lee ,  Hyun Lee ,  Kwangjoon Kim

发明人： Jyung Lee ,  Joon Lee ,  Hyun Lee ,  Kwangjoon Kim

IPC分类号： H04B10/00

CPC分类号： G01M11/00

摘要： Provided is an apparatus for testing the performance of an optical transceiver by referencing various performance clocks provided by an OTU2 signal connection transceiver and an STM-64/OC-192 signal. The apparatus for testing performance of an optical transceiver includes: a transmitter/receiver reference clock selector for selecting one of various transmitter/receiver reference clocks provided by an STM-64/OC-192 connection optical transceiver or an OTN connection optical transceiver; a transmitter test reference clock selection switch for selecting a receiver data synchronous clock provided by the transceivers or the selected transmitter/receiver reference clock as a transmitter test reference clock; and a receiver test reference clock selection switch for selecting a transmitter supervisory clock provided by the transceivers or the selected transmitter/receiver reference clock as a receiver test reference clock.

摘要翻译： 提供了一种用于通过参考由OTU2信号连接收发器和STM-64 / OC-192信号提供的各种性能时钟来测试光收发器的性能的装置。 用于测试光收发器性能的装置包括：用于选择由STM-64 / OC-192连接光收发器或OTN连接光收发器提供的各种发射机/接收机参考时钟之一的发射机/接收机参考时钟选择器; 发射机测试参考时钟选择开关，用于选择由收发器或选定的发射机/接收机参考时钟提供的接收机数据同步时钟作为发射机测试参考时钟; 以及接收机测试参考时钟选择开关，用于选择由收发器或选定的发射机/接收机参考时钟提供的发射机监控时钟作为接收机测试参考时钟。

公开(公告)号：US20060092988A1

公开(公告)日：2006-05-04

申请号：US11152099

申请日：2005-06-15

申请人： Joon Lee ,  Jyung Lee ,  Kwangjoon Kim

发明人： Joon Lee ,  Jyung Lee ,  Kwangjoon Kim

IPC分类号： H04J3/02

CPC分类号： H04J14/02 ,  H04J3/062 ,  H04J3/1617 ,  H04J2203/0094

摘要： Provided is an optical transponder that receives a tributary signal such as a SDH/SONET signal, a GbE (Gigibit Ethernet) signal, and a SAN (Storage Area Network) signal in a WDM (Wavelength Division Multiplexing) transmission system and a SDH (Synchronous Digital Hierarchy)/SONET (Synchronous Optical Network) system, and more particularly, to an optical transponder having a switching function. The optical transponder having a switching function includes: a switch changing a data path of an input tributary signal from a plurality of channels (ports); an STM-64/OC-192 mapper/demapper mapping the tributary signal switched to a different data path by the switch to an STM-64/OC-192 signal or demapping the STM-64/OC-192 signal to the tributary signal; and a transmission delay time compensator compensating for a differential delay caused by a transmission route difference on an optical fiber link when the STM-64/OC-192 signal is demapped to the tributary signal.