公开(公告)号：US08355612B2

公开(公告)日：2013-01-15

申请号：US12543852

申请日：2009-08-19

申请人： Sae Kyoung Kang ,  Joon Ki Lee ,  Jyung Chan Lee ,  Kwang Joon Kim

发明人： Sae Kyoung Kang ,  Joon Ki Lee ,  Jyung Chan Lee ,  Kwang Joon Kim

IPC分类号： G02B6/42 ,  H04J14/02

CPC分类号： G02B6/4215 ,  G02B6/4212 ,  G02B6/4226

摘要： An active alignment method for a multi-channel optical transmitter and receiver is disclosed. The active alignment method for a multi-channel optical transmitter includes actively aligning an optical signal generator with an optical multiplexer based on optical outputs of a plurality of wavelengths from the optical signal generator and an optical output of the optical multiplexer, and actively aligning the optical multiplexer with a fiber optic coupler based on an optical output of the optical multiplexer and an optical output of the fiber optic coupler.

摘要翻译： 公开了一种用于多通道光发射机和接收机的主动对准方法。 用于多通道光发射机的主动对准方法包括基于来自光信号发生器的多个波长的光输出和光复用器的光输出，主动地将光信号发生器与光复用器对准，并且主动对准光学 多路复用器，其具有基于光复用器的光输出的光纤耦合器和光纤耦合器的光输出。

公开(公告)号：US20100290739A1

公开(公告)日：2010-11-18

申请号：US12543852

申请日：2009-08-19

申请人： Sae Kyoung KANG ,  Joon Ki Lee ,  Jyung Chan Lee ,  Kwang Joon Kim

发明人： Sae Kyoung KANG ,  Joon Ki Lee ,  Jyung Chan Lee ,  Kwang Joon Kim

IPC分类号： G02B6/42 ,  H04J14/02

CPC分类号： G02B6/4215 ,  G02B6/4212 ,  G02B6/4226

摘要： An active alignment method for a multi-channel optical transmitter and receiver is disclosed. The active alignment method for a multi-channel optical transmitter includes actively aligning an optical signal generator with an optical multiplexer based on optical outputs of a plurality of wavelengths from the optical signal generator and an optical output of the optical multiplexer, and actively aligning the optical multiplexer with a fiber optic coupler based on an optical output of the optical multiplexer and an optical output of the fiber optic coupler.

摘要翻译： 公开了一种用于多通道光发射机和接收机的主动对准方法。 用于多通道光发射机的主动对准方法包括基于来自光信号发生器的多个波长的光输出和光复用器的光输出，主动地将光信号发生器与光复用器对准，并且主动对准光学 多路复用器，其具有基于光复用器的光输出的光纤耦合器和光纤耦合器的光输出。

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。

公开(公告)号：US20080107431A1

公开(公告)日：2008-05-08

申请号：US11871357

申请日：2007-10-12

申请人： Jyung Chan Lee ,  Moo Jung Chu ,  Kwang Joon Kim ,  Jun Ki Lee

发明人： Jyung Chan Lee ,  Moo Jung Chu ,  Kwang Joon Kim ,  Jun Ki Lee

IPC分类号： H04B10/04

CPC分类号： H04B10/572 ,  H01S5/0612 ,  H01S5/0683 ,  H01S5/0687

摘要： A method and apparatus for controlling a wavelength tuning of an optical source in an optical communication system. An operating temperature of an optical source is controlled and monitored to shorten a wavelength tuning time of the optical source generated in an optical source generator. When the current operating temperature reaches a final target temperature, an operating current is supplied to the optical source generator, and transmission of the operating current to the optical source generator is controlled and monitored. When the operating current reaches a final operating current, the wavelength tuning of the optical source is terminated. The operating temperature is adjusted by distinguishing between a smaller amount of temperature change and a larger amount of temperature change to prevent oscillation at the point of reaching the final target temperature, thereby minimizing the time taken for the output wavelength tuning.

摘要翻译： 一种用于控制光通信系统中的光源的波长调谐的方法和装置。 控制和监视光源的工作温度，以缩短在光源发生器中产生的光源的波长调谐时间。 当当前工作温度达到最终目标温度时，向光源发生器提供工作电流，并且控制和监视对光源发生器的工作电流的传输。 当工作电流达到最终工作电流时，光源的波长调谐终止。 通过区分较小量的温度变化和较大的温度变化量来调节工作温度，以防止在达到最终目标温度的时刻发生振荡，由此最小化输出波长调谐所需的时间。

公开(公告)号：US06606190B2

公开(公告)日：2003-08-12

申请号：US09997421

申请日：2001-11-28

申请人： Jyung Chan Lee ,  Moo Jung Chu ,  Kwang Joon Kim ,  Jong Hyun Lee

发明人： Jyung Chan Lee ,  Moo Jung Chu ,  Kwang Joon Kim ,  Jong Hyun Lee

IPC分类号： H04B1012

CPC分类号： H01S3/06758

摘要： Disclosed herein is an inhomogeneity tunable erbium-doped optical fiber amplifier with a long wavelength band and method of blocking a backward amplified spontaneous light emission in the same. The optical fiber amplifier includes a control device situated between a first amplification stage and a second amplification stage for controlling an isolation rate of a backward amplified spontaneous light emission being propagated from a second amplification stage to the first amplification stage. The method blocks a backward amplified spontaneous light emission in a two-stage inhomogeneity tunable erbium-doped optical fiber amplifier with a long wavelength gain band, in which the backward amplified spontaneous light emission being propagated from a second amplification stage to a first amplification stage is blocked, and an isolation rate of the backward amplified spontaneous light emission is controlled according to the intensity of an optical signal inputted to the first amplification stage.

公开(公告)号：US07917040B2

公开(公告)日：2011-03-29

申请号：US11871357

申请日：2007-10-12

申请人： Jyung Chan Lee ,  Moo Jung Chu ,  Kwang Joon Kim ,  Jun Ki Lee

发明人： Jyung Chan Lee ,  Moo Jung Chu ,  Kwang Joon Kim ,  Jun Ki Lee

IPC分类号： H04B10/04

CPC分类号： H04B10/572 ,  H01S5/0612 ,  H01S5/0683 ,  H01S5/0687

摘要： A method and apparatus for controlling a wavelength tuning of an optical source in an optical communication system. An operating temperature of an optical source is controlled and monitored to shorten a wavelength tuning time of the optical source generated in an optical source generator. When the current operating temperature reaches a final target temperature, an operating current is supplied to the optical source generator, and transmission of the operating current to the optical source generator is controlled and monitored. When the operating current reaches a final operating current, the wavelength tuning of the optical source is terminated. The operating temperature is adjusted by distinguishing between a smaller amount of temperature change and a larger amount of temperature change to prevent oscillation at the point of reaching the final target temperature, thereby minimizing the time taken for the output wavelength tuning.

摘要翻译： 一种用于控制光通信系统中的光源的波长调谐的方法和装置。 控制和监视光源的工作温度，以缩短在光源发生器中产生的光源的波长调谐时间。 当当前工作温度达到最终目标温度时，向光源发生器提供工作电流，并且控制和监视对光源发生器的工作电流的传输。 当工作电流达到最终工作电流时，光源的波长调谐终止。 通过区分较小量的温度变化和较大的温度变化量来调节工作温度，以防止在达到最终目标温度的时刻发生振荡，由此最小化输出波长调谐所需的时间。

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。

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。

公开(公告)号：US06559989B1

公开(公告)日：2003-05-06

申请号：US09499934

申请日：2000-02-08

申请人： Kwang Joon Kim ,  Ji Wook Youn ,  Hee Sang Chung ,  Sung Un Lee ,  Jong Hyun Lee

发明人： Kwang Joon Kim ,  Ji Wook Youn ,  Hee Sang Chung ,  Sung Un Lee ,  Jong Hyun Lee

IPC分类号： H04J1408

CPC分类号： H04Q11/0005 ,  H04J14/08 ,  H04Q2011/0041

摘要： An optical packet header processing apparatus for processing a header of an optical packet expressing an address of a destination node to control a switching operation of an optical packet switch. The optical packet header processing apparatus comprises a beam splitter for splitting the optical packet header into a predetermined number of optical packet header elements, and a plurality of time interval detectors. Each of the time interval detectors receives a corresponding one of the optical packet header elements from the beam splitter and outputs a detect optical pulse if a pair of optical pulses having a predetermined time interval therebetween are present in the received optical packet header element. A plurality of optical pulse detectors are adapted to convert the detect optical pulses from the time interval detectors into electrical signals and transfer the converted electrical signals to the optical packet switch, respectively. Therefore, the optical packet switch determines the destination node in response to the electrical signals from the optical pulse detectors and outputs the optical packet to an output port corresponding to the determined destination node.

摘要翻译： 一种光分组报头处理装置，用于处理表示目的地节点的地址的光分组的报头以控制光分组交换机的切换操作。 光分组报头处理装置包括分光器，用于将光分组报头分割成预定数量的光分组报头元素，以及多个时间间隔检测器。 每个时间间隔检测器从分束器接收相应的一个光分组报头元件，并且如果在接收的光分组报头元件中存在其间具有预定时间间隔的一对光脉冲，则输出检测光脉冲。 多个光脉冲检测器适于将来自时间间隔检测器的检测光脉冲转换为电信号，并将转换后的电信号分别传送到光分组交换机。 因此，光分组交换机响应于来自光脉冲检测器的电信号来确定目的地节点，并将光分组输出到与确定的目的地节点对应的输出端口。

公开(公告)号：US6097529A

公开(公告)日：2000-08-01

申请号：US137691

申请日：1998-08-21

申请人： Hyuek Jae Lee ,  Kwang Joon Kim ,  Hye Young Kim ,  Seok Youl Kang

发明人： Hyuek Jae Lee ,  Kwang Joon Kim ,  Hye Young Kim ,  Seok Youl Kang

IPC分类号： G02F1/00 ,  H04B10/299 ,  G02F1/01 ,  H04B10/04

CPC分类号： H04B10/299

摘要： An apparatus for enhancing the extinction ratio in an optical NRZ-to-RZ converting system, and an optical modulation system, are disclosed. The extinction ratio is improved by using an optical fiber loop mirror together with optical amplifiers. The apparatus for enhancing the extinction ratio includes a variable coupling means for receiving external signals to split them to respective terminals of a loop mirror. A variable optical delaying means delays the phases of the signals after their dispersion by the variable coupling means. An optical amplifying means positioned asymmetrically smaller than a bit time of an RZ signal pattern inputted slightly departed from the center of the loop mirror amplifies the optical intensity, and varies the refractive index so as to cause a phase delay. A polarization adjusting means adjusts the polarization of the optical signals, and an optical band pass filtering means removes noises from signals outputted from the loop mirror. The apparatus is used in an optical NRZ-to-RZ converting system.

摘要翻译： 公开了一种用于增强光学NRZ至RZ转换系统中的消光比的装置和光学调制系统。 通过与光放大器一起使用光纤环路镜来提高消光比。 用于增强消光比的装置包括用于接收外部信号以将其分离到环形反射镜的相应端子的可变耦合装置。 可变光延迟装置通过可变耦合装置使信号的相位在其分散之后延迟。 一个光学放大装置的位置不对称地小于从环形镜的中心稍微偏离的RZ信号图形的位时间放大光强度，并且改变折射率以引起相位延迟。 偏振调整装置调节光信号的极化，光带通滤波装置从环形反射镜输出的信号中去除噪声。 该装置用于光学NRZ至RZ转换系统。