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11. 发明授权

US07471896B2 Optical transponder and method for detecting and treating errors in optical channel sublayer of the optical transponder 有权
标题翻译：用于检测和处理光学应答器的光通道子层中的错误的光学应答器和方法
公开(公告)号：US07471896B2
公开(公告)日：2008-12-30
申请号：US10903053
申请日：2004-07-30
申请人： Yun Hee Cho , Joon Ki Lee , Seung Il Myong , Jyung Chan Lee , Kwangjoon Kim
发明人： Yun Hee Cho , Joon Ki Lee , Seung Il Myong , Jyung Chan Lee , Kwangjoon Kim
IPC分类号： 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。

12. 发明授权

US07075694B2 Apparatus and method for automatically correcting bias voltage for carrier suppressed pulse generating modulator 失效
标题翻译：用于自动校正载波抑制脉冲发生调制器偏置电压的装置和方法
公开(公告)号：US07075694B2
公开(公告)日：2006-07-11
申请号：US10863741
申请日：2004-06-07
申请人： Youn Seon Jang , Kwang Joon Kim , Jyung Chan Lee , Seung Il Myong
发明人： Youn Seon Jang , Kwang Joon Kim , Jyung Chan Lee , Seung Il Myong
IPC分类号： G02B26/00
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。

13. 发明授权

US07049902B2 Tunable high-order bessel low pass filter 有权
标题翻译：可调式高阶贝塞尔低通滤波器
公开(公告)号：US07049902B2
公开(公告)日：2006-05-23
申请号：US10858925
申请日：2004-06-01
申请人： Seung Il Myong , Kwang Joon Kim , Jyung Chan Lee , Sang Kyu Lim
发明人： Seung Il Myong , Kwang Joon Kim , Jyung Chan Lee , Sang Kyu Lim
IPC分类号： H03H7/01 , H03J3/00 , H03J7/02
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。

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