公开(公告)号：US20080138081A1

公开(公告)日：2008-06-12

申请号：US11975766

申请日：2007-10-22

Applicant: Hwan Seok Chung ,  Kwangjoon Kim

Inventor： Hwan Seok Chung ,  Kwangjoon Kim

IPC: H04B10/00

CPC classification number: H04Q11/0005 ,  H04Q11/0066 ,  H04Q2011/0015 ,  H04Q2011/0039 ,  H04Q2011/0041 ,  H04Q2011/0045

Abstract: In a conventional network for transmitting an optical burst signal, it is impossible to effectively swap labels, reproduce a payload signal, and switch and transmit the signals. A device for swapping optical labels and reproducing an optical payload, includes: an envelope detection unit outputting an envelope of payloads or labels of an optical burst signal by converting phases of two signals obtained by converting the optical burst signal into an electrical signal; a payload processing unit extracting a payload signal, which is included in the optical burst signal, by synchronizing the optical burst signal with the envelope output from the envelope detection unit and optically reproducing or wavelength-converting the extracted payload signal; and a label processing unit extracting a label signal, which is included in the optical burst signal, by synchronizing the optical burst signal with the envelope output form the envelope detection unit and converting the extracted label signal according to a path along which the optical burst signal is transmitted. Accordingly, it is possible to effectively swap the labels, reproduce the payload signal, and switch and transmit the signals, in the network for transmitting the optical burst signal.

Abstract translation: 在用于发送光突发信号的常规网络中，不可能有效地交换标签，再现有效负载信号，并且切换和发送信号。 一种用于交换光学标签和再现光学有效载荷的装置，包括：包络检测单元，通过将通过将光猝发信号转换成电信号而获得的两个信号的相位转换来输出有效载荷的包络或光猝发信号的标记; 有效载荷处理单元通过使所述光脉冲串信号与从所述包络检测单元输出的包络同步，并且对所提取的有效载荷信号进行光学再现或波长转换，提取包括在所述光突发信号中的有效载荷信号; 以及标签处理单元，通过使所述光脉冲串信号与所述包络检测单元的包络输出同步，提取包括在所述光突发信号中的标签信号，并且根据沿着所述光脉冲信号的路径转换所提取的标签信号 被传送。 因此，有可能在网络中有效地交换标签，再现有效载荷信号，以及切换和发送信号，以发送光突发信号。

公开(公告)号：US20080107423A1

公开(公告)日：2008-05-08

申请号：US11935191

申请日：2007-11-05

Applicant: Joon Ki LEE ,  Jyung Chan Lee ,  Kwangjoon Kim

Inventor： Joon Ki LEE ,  Jyung Chan Lee ,  Kwangjoon Kim

IPC: H04B10/00

CPC classification number: H04B10/40 ,  H04L25/03343

Abstract: An optical transceiver which can effectively reduce optical output jitter when an error is made during designing and manufacturing of a printed circuit board (PCB), and a method of controlling optical output jitter using the optical transceiver are provided. The optical transceiver includes a transmitter unit including an equalizing (EQ) filter which can reduce jitter of a high speed electric signal; a control circuit which controls the EQ filter; a receiver unit which receives an optical signal; and a micro-controller which controls the transmitter unit and the receiver unit. Further included in the optical transceiver is an active type or passive type EQ filter and, in the case of the active type, the control circuit is used to control the filter, in order to compensate for high-frequency component of a high speed electric signal in the transmitter unit in order to reduce reflection or loss on the PCB, and thus deterministic optical output jitter occurring due to Inter-Symbol Interference (ISI) can be reduced.

Abstract translation: 提供了在印刷电路板（PCB）的设计和制造期间发生错误时有效降低光输出抖动的光收发器，以及使用该光收发器控制光输出抖动的方法。 光收发器包括一个发射单元，它包括均衡（EQ）滤波器，可以减少高速电信号的抖动; 控制EQ滤波器的控制电路; 接收单元，其接收光信号; 以及控制发射机单元和接收机单元的微控制器。 在光收发器中还包括有源型或无源型EQ滤波器，并且在有源类型的情况下，控制电路用于控制滤波器，以便补偿高速电信号的高频分量 在发射机单元中以减少PCB上的反射或损耗，因此可以减少由于符号间干扰（ISI）引起的确定性的光输出抖动。

公开(公告)号：US07167493B2

公开(公告)日：2007-01-23

申请号：US10897362

申请日：2004-07-21

Applicant: Jyung-Chan Lee ,  Joon-Ki Lee ,  Yun-Hee Cho ,  Seung-Il Myong ,  Youn-Seon Jang ,  Yool Kwon ,  Kwangjoon Kim ,  Moo-Jung Chu

Inventor： Jyung-Chan Lee ,  Joon-Ki Lee ,  Yun-Hee Cho ,  Seung-Il Myong ,  Youn-Seon Jang ,  Yool Kwon ,  Kwangjoon Kim ,  Moo-Jung Chu

IPC: H01S3/00 ,  H01S3/04 ,  H01S3/10 ,  H01S3/13 ,  H01S3/14

CPC classification number: H01S5/06804 ,  H01S5/02415 ,  H01S5/0265 ,  H01S5/042

Abstract: The present invention relates to a method for revising a wavelength of the EML by controlling a working temperature based on arithmetic functional relations between the DC-Offset voltage and the wavelength and between the working temperature and the wavelength, and a computer-readable recording medium thereof. The method includes the steps of: re-setting initial values of a working temperature, a amplifying voltage and the DC-Offset voltage; determining a wavelength with respect to the re-set DC-Offset voltage based on a functional relation between the DC-Offset voltage and the wavelength of the EML; and determining the revising working temperature for the determined wavelength based on the functional relation between the working temperature and the wavelength of the EML, and re-setting the working temperature with the revising working temperature.

Abstract translation: 本发明涉及一种通过基于DC偏移电压与波长之间以及工作温度和波长之间的算术函数关系来控制工作温度来修改EML的波长的方法及其计算机可读记录介质 。 该方法包括以下步骤：重新设定工作温度，放大电压和DC偏移电压的初始值; 基于所述DC偏移电压和所述EML的波长之间的函数关系来确定相对于所述重新设定的DC偏移电压的波长; 并根据工作温度和EML波长之间的功能关系确定确定波长的修正工作温度，并根据修改工作温度重新设定工作温度。

公开(公告)号：US20060133712A1

公开(公告)日：2006-06-22

申请号：US11143492

申请日：2005-06-03

Applicant: Youn Jang ,  Kwangjoon Kim

Inventor： Youn Jang ,  Kwangjoon Kim

IPC: G02F1/01

CPC classification number: H04B10/677

Abstract: An apparatus and method for controlling an optical interferometer are provided. The method includes setting a thermoelectric cooler (TEC) temperature of the optical interferometer to a room temperature, obtaining an optimal temperature using a difference between two output powers of the optical interferometer based on eye opening of the two output powers and applying an optimal heat voltage generating the optimal temperature to a delay adjuster of the optical interferometer, and performing dithering at the optimal temperature to stabilize the optimal heat voltage.

Abstract translation: 提供了一种用于控制光学干涉仪的装置和方法。 该方法包括将光干涉仪的热电冷却器（TEC）温度设定为室温，使用基于两个输出功率的眼睛打开的光干涉仪的两个输出功率之间的差来获得最佳温度，并施加最佳热电压 为光干涉仪的延迟调节器产生最佳温度，并在最佳温度下进行抖动以稳定最佳热电压。

公开(公告)号：US20060126997A1

公开(公告)日：2006-06-15

申请号：US11137467

申请日：2005-05-26

Applicant: Jinsoo Han ,  Kwangjoon Kim

Inventor： Jinsoo Han ,  Kwangjoon Kim

IPC: G02B6/28

CPC classification number: H04J14/02

Abstract: This apparatus of bidirectional optical recirculation loop transmission enables bidirectional transmission system to be tested in the long transmission distance. Unidirectional optical recirculation loop is composed of two optical modulators and one 4-port optical coupler. Bidirectional optical recirculation loop is composed of four optical switches, one 4-port optical coupler and six optical circulators. Two optical circulators at the entrance (simultaneously exit) of the loop enable transmitted (received) signals to be added (dropped). Four optical circulators enable forward (reverse) signal to bypass the optical switch set for reverse (forward) signal in the inner optical loop. Forward (reverse) signal can be transmitted simultaneously with the reverse (forward) signal without interference. Two independent optical recirculation loops exist on the same fiber link in each direction.

Abstract translation: 这种双向光学循环回路传输装置使双向传输系统能够在较长的传输距离内进行测试。 单向光学循环回路由两个光学调制器和一个4端口光耦合器组成。 双向光学循环回路由四个光开关，一个4端口光耦合器和六个光循环器组成。 环路入口（同时出口）处的两个光环路器使能发送（接收）信号被添加（下降）。 四个光学循环器使得正向（反向）信号绕过内部光环路中的反向（正向）信号的光开关组。 正向（反向）信号可以与反向（正向）信号同时传输而不受干扰。 在相同的光纤链路上存在两个独立的光学循环回路，每个方向。

公开(公告)号：US20050271384A1

公开(公告)日：2005-12-08

申请号：US10968308

申请日：2004-10-18

Applicant: Han Lee ,  Donghan Lee ,  Hee Chung ,  Kwangjoon Kim

Inventor： Han Lee ,  Donghan Lee ,  Hee Chung ,  Kwangjoon Kim

IPC: G02F1/39 ,  H04B10/08

CPC classification number: H04B10/071 ,  G01M11/3145

Abstract: There are provided a method and system for monitoring an optical transmission line. The system for monitoring the optical transmission line includes: an OTDR (optical time-domain reflectometer) transmitting a monitoring light to an optical transmission line, measuring a reflected light or backscattered light to monitor the optical transmission line; an optical amplification unit amplifying the monitoring light transmitted on the optical transmission line by using a gain clamped optical amplifier; and a filter unit removing a component having a wavelength outside a wavelength band of the monitoring light from a backward ASE (amplified spontaneous emission) generated by the optical amplification unit. Accordingly, it is possible to extend an optical transmission line monitoring distance of the OTDR. As a result, it is possible to prevent deterioration of the performance of the OTDR because of the backward ASE.

Abstract translation: 提供了一种用于监测光传输线的方法和系统。 用于监测光传输线路的系统包括：将光监测光传输到光传输线的OTDR（光时域反射计），测量反射光或反向散射光以监测光传输线; 光放大单元，通过使用增益钳位光放大器来放大在光传输线路上传输的监视光; 以及滤光器单元，从由光放大单元产生的反向ASE（放大的自发发射）去除具有监测光的波长带外的波长的分量。 因此，可以延长OTDR的光传输线监视距离。 结果，可以防止由于向后的ASE而导致OTDR的性能的恶化。

公开(公告)号：US20120121264A1

公开(公告)日：2012-05-17

申请号：US13386564

申请日：2010-07-14

Applicant: Hwan Seok Chung ,  Sun Hyok Chang ,  Kwangjoon Kim

Inventor： Hwan Seok Chung ,  Sun Hyok Chang ,  Kwangjoon Kim

IPC: H04J14/06 ,  H04J14/02

CPC classification number: H04B10/5053 ,  H04B10/5561 ,  H04B10/66

Abstract: An optical transmitting apparatus optically modulates a transmitting signal to transmit the signal to an optical receiving apparatus using a phase of two optical carriers having each wavelength, and an optical receiving apparatus demodulates an optical signal having a modulated phase with intensity modulation to detect a transmitting signal.

Abstract translation: 光发送装置对发送信号进行光调制，使用具有各波长的两个光载波的相位向光接收装置发送信号，并且光接收装置用强度调制解调具有调制相位的光信号，以检测发送信号 。

公开(公告)号：US08009986B2

公开(公告)日：2011-08-30

申请号：US11810896

申请日：2007-06-07

Applicant: Sun Hyok Chang ,  Hwan Seok Chung ,  Sang Soo Lee ,  Kwangjoon Kim

Inventor： Sun Hyok Chang ,  Hwan Seok Chung ,  Sang Soo Lee ,  Kwangjoon Kim

IPC: H04J14/02

CPC classification number: H04J14/021 ,  H04J14/0206 ,  H04J14/0212 ,  H04J14/0217

Abstract: An optical node capable of supporting a mesh-type optical network is provided. The node includes: N ROADMs, which separate specific wavelength channels from a multiple wavelength channel optical signal that is input from any node constituting the optical network, allows the rest of the wavelength channels to be passed, and combine another added wavelength channel with the passed wavelength channel to allow the combined wavelength channel to be passed; an N×1 optical switch which selects the specific wavelength channel separated from one of the N ROADMs and inputs the specific wavelength channel into an optical transceiver and selects one of the N ROADMs and connects a wavelength channel that is output from the optical transceiver to the selected ROADM; and an electrical cross connect switch which drops a part of electrical signal bandwidth of the specific wavelength channels separated by the ROADM, which is converted into the electrical signals in the optical transceiver, toward an external client and combines the rest of the electrical signal bandwidth with a electrical signal added by the external client to form an electrical signal bandwidth of a wavelength channel and output the electrical signal to the optical transceiver. Accordingly, optical fiber inputs and outputs in various directions can be supported, and the number of WDM transceivers used for each node is remarkably reduced, thereby improving efficiency and economical efficiency of a network.

Abstract translation: 提供了一种支持网状光网络的光节点。 节点包括：N个ROADM，其将特定波长信道与从构成光网络的任何节点输入的多波长信道光信号分离，允许其余的波长信道通过，并将另一个添加的波长信道与传递的 波长通道以允许组合波长通道通过; N×1光开关，其选择从N个ROADM之一分离的特定波长信道，并将特定波长信道输入到光收发器中，并选择N个ROADM中的一个，并将从光收发器输出的波长信道连接到 选择ROADM; 以及电交叉开关，其将由ROADM分离的特定波长信道的一部分电信号带宽（其被转换成光收发器中的电信号）向外部客户端转移，并将其余电信号带宽与 由外部客户端添加的电信号以形成波长信道的电信号带宽并将电信号输出到光收发器。 因此，可以支持各个方向的光纤输入和输出，并且显着地减少了用于每个节点的WDM收发器的数量，从而提高了网络的效率和经济效率。

公开(公告)号：US20100329684A1

公开(公告)日：2010-12-30

申请号：US11933100

申请日：2007-10-31

Applicant: Sang Soo LEE ,  Hwan Seok Chung ,  Sun Hyok Chang ,  Kwangjoon Kim

Inventor： Sang Soo LEE ,  Hwan Seok Chung ,  Sun Hyok Chang ,  Kwangjoon Kim

IPC: H04J14/02

CPC classification number: H04J14/0212

Abstract: Provided are a channel express/add optical module and a method of channel express/add in an optical add/drop multiplexer node using the channel express/add optical module. The channel express/add optical module comprises: a multiplexer/demultiplexer which demultiplexes a multiplexed optical signal having a plurality of wavelengths into individual wavelength optical signals or multiplexes a plurality of different wavelength optical signals; a plurality of 1×2 switches each of which includes a first output end that guides the demultiplexed different wavelength optical signals to output them thereto and a second output end through which new wavelength optical signals; and a plurality of reflectors each of which reflects the optical signal output to the first output end so that the optical signal is feedback to the multiplexer/demultiplexer via the 1×2 switches.The channel express/add optical module and the method of channel express/add in an OADM using this optical module are applied to a reconfigurable optical add/drop multiplexer system, and can express/add multiplexed channels in a node using a simple structure.

Abstract translation: 提供了一种频道快递/添加光学模块和使用频道快递/添加光学模块在光分插复用器节点中频道表示/添加的方法。 信道快速加/增光模块包括：多路复用器/解复用器，其将具有多个波长的多路复用光信号解复用为各波长光信号或复用多个不同波长光信号; 多个1×2开关，每个开关包括引导解复用的不同波长光信号以将其输出的第一输出端和通过其输出新波长光信号的第二输出端; 以及多个反射器，每个反射器将输出的光信号反射到第一输出端，​​使得光信号经由1×2开关反馈到多路复用器/解复用器。 使用该光模块的信道快递/增加光模块以及在OADM中进行信道表示/添加的方法被应用于可重新配置的光分插复用器系统，并且可以使用简单的结构在节点中表示/添加多路复用信道。

公开(公告)号：US07440700B2

公开(公告)日：2008-10-21

申请号：US11134202

申请日：2005-05-20

Applicant: Jyung Chan Lee ,  Joon Ki Lee ,  Hyun Jae Lee ,  Kwangjoon Kim

Inventor： Jyung Chan Lee ,  Joon Ki Lee ,  Hyun Jae Lee ,  Kwangjoon Kim

IPC: H04B10/00

CPC classification number: G01M11/00

Abstract: 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.

Abstract translation: 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。