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11. 发明授权

US07366411B2 System and method for operating optical transponder 失效
标题翻译：操作光转发器的系统和方法
公开(公告)号：US07366411B2
公开(公告)日：2008-04-29
申请号：US10693058
申请日：2003-10-23
申请人： Yun-Hee Cho , Seung-Il Myong , Jyung-Chan Lee , Yool Kwon
发明人： Yun-Hee Cho , Seung-Il Myong , Jyung-Chan Lee , Yool Kwon
IPC分类号： H04B10/08
CPC分类号： H04B10/00
摘要： The method for operating an optical transponder, which performs maintenance of a signal in the optical transponder having a digital wrapper in an optical transmission system including multiple layers, includes (a) calling a processor for processing an interrupt when the interrupt is generated from the digital wrapper according to monitoring of a received signal; (b) the called processor detecting what defect is generated in the received signal and detecting whether or not the received signal requires maintenance; (c) performing defect processing in the case that a defect is detected at (b) or is cancelled; and (d) controlling the digital wrapper according to the defect and maintenance processing result.
摘要翻译：在包括多层的光传输系统中执行在具有数字封装的光转发器中进行信号维护的光转发器的方法包括：（a）当从数字信号产生中断时，调用处理器来处理中断根据接收信号的监测，包装纸; （b）被叫处理器检测在接收信号中产生什么缺陷并检测接收到的信号是否需要维护; （c）在（b）中检测到缺陷或被取消的情况下执行缺陷处理; 和（d）根据缺陷和维护处理结果控制数字包装纸。

12. 发明授权

US07313333B2 Apparatus for controlling decision threshold voltage to optical receiver 失效
标题翻译：用于控制光接收机的判定阈值电压的装置
公开(公告)号：US07313333B2
公开(公告)日：2007-12-25
申请号：US10815064
申请日：2004-03-31
申请人： Jyung Chan Lee , Seung Il Myong , Joon Ki Lee , Kwang Joon Kim
发明人： Jyung Chan Lee , Seung Il Myong , Joon Ki Lee , Kwang Joon Kim
IPC分类号： H04B10/06
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。

13. 发明授权

US07068422B2 Optical fiber amplification method and apparatus for controlling gain 失效
公开(公告)号：US07068422B2
公开(公告)日：2006-06-27
申请号：US10392614
申请日：2003-03-19
申请人： Jyung-chan Lee , Seung-il Myong , Moo-jung Chu , Hyun-jae Lee
发明人： Jyung-chan Lee , Seung-il Myong , Moo-jung Chu , Hyun-jae Lee
IPC分类号： H04B10/12
CPC分类号： H04B10/2942
摘要： Provided are an optical fiber amplification method and apparatus for controlling a gain. Initial values including target gains of first and second amplifications for an optical amplifier amplifying the input light signal are set. Power of the input light signal is measured and the power of first and second backward pump lights proceeding in the opposite direction to the input light signal is controlled based on the measured power. The input light signal is firstly amplified and a first amplification gain of the amplified light signal is calculated. Power of a first forward pump light proceeding in the same direction as the input light signal is controlled so that the first amplification gain can be substantially equal to the target gain of the first amplification. The firstly amplified light signal is secondly amplified and a second amplification gain with respect to the input light signal is calculated. The power of a second forward pump light proceeding in the same direction as the input light signal is controlled so that the second amplification gain can be substantially equal to the target gain of the second amplification.

14. 发明授权

US08532501B2 Apparatus for receiving optical signal and method of controlling phase offset for differential quadrature phase shift keying 有权
公开(公告)号：US08532501B2
公开(公告)日：2013-09-10
申请号：US12912870
申请日：2010-10-27
申请人： Hwan-Seok Chung , Sun-Hyok Chang , Jyung-Chan Lee , Kwang-Joon Kim
发明人： Hwan-Seok Chung , Sun-Hyok Chang , Jyung-Chan Lee , Kwang-Joon Kim
IPC分类号： H04B10/06
摘要： An apparatus for receiving optical signals in DQPSK and method of controlling a phase offset in receiving optical signals for DQPSK is provided. An original optical signal modulated in DQPSK is received. The original optical signal is delayed by one bit to make a delay optical signal such that an interference on the original optical signal and the delay optical signal is performed. A control signal is generated by use of an interference result between the original optical signal and the delay optical signal. A phase offset for the interference between the original optical signal and the delay optical signal is controlled by use of the generated control signal. In receiving optical signals, the phase offset between the delay optical signal and the original optical signal is precisely controlled, thereby optimizing the transfer characteristics of an optical delay interferometer.

15. 发明申请

US20120235764A1 STRUCTURE OF TRANSMISSION LINE FOR DATA COMMUNICATION AND METHOD FOR DESIGNING THE SAME 审中-公开
标题翻译：用于数据通信的传输线的结构及其设计方法
公开(公告)号：US20120235764A1
公开(公告)日：2012-09-20
申请号：US13365491
申请日：2012-02-03
申请人： Sae Kyoung KANG , Joon Ki LEE , Joon Young HUH , Jyung Chan LEE
发明人： Sae Kyoung KANG , Joon Ki LEE , Joon Young HUH , Jyung Chan LEE
IPC分类号： H01P3/08 , H05K3/10 , H03H7/38
CPC分类号： H01P3/006 , H01P5/028 , H05K1/0219 , H05K1/0227 , H05K1/0253 , H05K1/147 , H05K2201/058 , H05K2201/09618 , H05K2201/09672 , H05K2201/09727 , H05K2201/10121 , Y10T29/49155
摘要： Disclosed is a structure for impedance matching by applying a CPW structure to an impedance discontinuous portion on a data signal line or using a micro-strip open stub so as to be used for high-speed transmission by a flexible PCB. According to the present invention, it is possible to fabricate a flexible PCB capable of performing low-priced and high-speed transmission.
摘要翻译：公开了通过将CPW结构应用于数据信号线上的阻抗不连续部分或使用微带开路短截线来进行阻抗匹配的结构，以便用于通过柔性PCB的高速传输。根据本发明，可以制造能够执行低价和高速传输的柔性PCB。

16. 发明授权

US07440700B2 Apparatus for testing performance of optical transceiver 失效
标题翻译：用于测试光收发器性能的装置
公开(公告)号：US07440700B2
公开(公告)日：2008-10-21
申请号：US11134202
申请日：2005-05-20
申请人： Jyung Chan Lee , Joon Ki Lee , Hyun Jae Lee , Kwangjoon Kim
发明人： Jyung Chan Lee , Joon Ki Lee , Hyun Jae 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。

17. 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。

18. 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。

19. 发明授权

US06529317B2 L-band erbium-doped fiber amplifier pumped by 1530 nm-band pump 失效
标题翻译：由1530 nm波段泵泵浦的L波段掺铒光纤放大器
公开(公告)号：US06529317B2
公开(公告)日：2003-03-04
申请号：US09752549
申请日：2000-12-29
申请人： Bo-Hun Choi , Moo-Jung Chu , Seung-Kwan Kim , Jyung-Chan Lee , Hyo-Hoon Park
发明人： Bo-Hun Choi , Moo-Jung Chu , Seung-Kwan Kim , Jyung-Chan Lee , Hyo-Hoon Park
IPC分类号： H01S300
CPC分类号： H01S3/06754 , H01S3/094003
摘要： An improved long wavelength-band EDFA (L-band EDFA) is disclosed. The EDFA includes an input terminal for receiving signal light, a pumping unit for pumping a 1,530 nm wavelength band pumping light, a WDM coupler for multiplexing the signal light and the pumping light, and an EDF pumped by a 1,530 nm wavelength band pumping light for amplifying the signal light. Compared with conventional 1,480 nm pumping, the EDFA pumped by 1,530 nm band pumping have about two times higher power conversion efficiency.
摘要翻译：公开了改进的长波长带EDFA（L波段EDFA）。 EDFA包括用于接收信号光的输入端子，用于泵浦1,530nm波长带式泵浦光的泵浦单元，用于多路复用信号光和泵浦光的WDM耦合器，以及通过1,530nm波长带的泵浦光泵浦的EDF 放大信号光。与常规1,480nm泵浦相比，通过1,530nm波段泵浦泵浦的EDFA具有大约两倍的功率转换效率。

20. 发明申请

US20120308230A1 METHOD AND APPARATUS FOR CONTROLLING AN OPTICAL RECEIVER HAVING DELAY PATHS 失效
标题翻译：用于控制具有延迟片的光接收机的方法和装置
公开(公告)号：US20120308230A1
公开(公告)日：2012-12-06
申请号：US13483599
申请日：2012-05-30
申请人： Jyung-Chan LEE
发明人： Jyung-Chan LEE
IPC分类号： H04B10/06 , H04B10/08
CPC分类号： H04B10/677
摘要： A control apparatus for controlling an optical receiver having delay paths comprises an optical variable attenuator configured to generate a variable signal and provide the variable signal to the optical receiver; a fine control voltage controller configured to generate a variable fine control voltage and input the variable fine control voltage to one path of the delay paths of the optical receiver; a photo-diode voltage monitor configured to detect a first voltage value and a second voltage value; a bit error rate (BER) checker configured to estimate a bit error rate (BER) according to a signal output from the optical receiver; and a controller configured to set a value of the variable signal and a value of the variable fine control voltage and to estimate the fine control voltage that makes the bit error rate a minimum according to the first voltage value and the second voltage value.
摘要翻译：一种用于控制具有延迟路径的光接收机的控制装置，包括：光学可变衰减器，被配置为产生可变信号，并向光接收机提供可变信号; 精细控制电压控制器，被配置为产生可变精细控制电压，并将可变精细控制电压输入到光接收机的延迟路径的一个路径; 光电二极管电压监视器，被配置为检测第一电压值和第二电压值; 配置为根据从光接收器输出的信号来估计误码率（BER）的误码率（BER）检验器; 以及控制器，被配置为设置可变信号的值和可变精细控制电压的值，并且根据第一电压值和第二电压值来估计使误码率最小的精细控制电压。

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