公开(公告)号：US08437636B2

公开(公告)日：2013-05-07

申请号：US12580177

申请日：2009-10-15

Applicant: Kyeong-eun Han ,  Kwang-joon Kim

Inventor： Kyeong-eun Han ,  Kwang-joon Kim

IPC: H04J14/00

CPC classification number: H04J14/0282 ,  H04J14/0232 ,  H04J14/0238 ,  H04J14/0246

Abstract: Provided are methods of transmitting and receiving a multicast or broadcast frame in an optical line terminal (OLT) and an optical network unit (ONU) for a wavelength division multiplexing (WDM)-passive optical network (PON), a WDM-PON system, and an OLT for a WDM-PON. The method of transmitting a multicast or broadcast frame in an OLT for a WDM-PON includes converting and splitting a multicast or broadcast frame input using a single wavelength into a plurality of wavelengths, combining the split wavelengths, and outputting the multicast or broadcast frame. In this way, a multicast or broadcast frame can be transmitted and received, thereby providing a single copy broadcast (SCB) function in a WDM-PON.

Abstract translation: 提供了在用于波分复用（WDM）无源光网络（PON），WDM-PON系统的光线路终端（OLT）和光网络单元（ONU）中发送和接收组播或广播帧的方法， 和用于WDM-PON的OLT。 在用于WDM-PON的OLT中发送组播或广播帧的方法包括将使用单个波长输入的多播或广播帧转换成多个波长，组合分离波长，并输出多播或广播帧。 以这种方式，可以发送和接收多播或广播帧，从而在WDM-PON中提供单个复制广播（SCB）功能。

公开(公告)号：US08254291B2

公开(公告)日：2012-08-28

申请号：US12638002

申请日：2009-12-15

Applicant: Kye-hyun Ahn ,  Seung-hwan Kim ,  Yong-tae Kim ,  Kyeong-eun Han ,  Kwang-joon Kim

Inventor： Kye-hyun Ahn ,  Seung-hwan Kim ,  Yong-tae Kim ,  Kyeong-eun Han ,  Kwang-joon Kim

IPC: H04L12/28

CPC classification number: H04L25/14

Abstract: An Ethernet device having multiple lanes and a method of operating the lanes are provided. In one general aspect, it is possible to allocate a dummy block to each of one or more lanes such that the lanes do not selectively participate in communications. In addition, on a receiving side, the dummy block can be removed from among the genuine data blocks to enable data to be decoded. In this case, an Ethernet device on a transmission side and an Ethernet device on a receiving side can exchange information of a lane to which the dummy block is allocated by use of a lane status message, and the lane status message may be based on a link fault message specified by Ethernet standards.

Abstract translation: 提供了一种具有多个通道的以太网设备和一个操作车道的方法。 在一个一般方面，可以将一个虚拟块分配给一个或多个车道中的每一个，使得车道不选择性地参与通信。 此外，在接收侧，可以从正版数据块中移除伪块，以使数据被解码。 在这种情况下，发送侧的以太网设备和接收侧的以太网设备可以通过使用车道状态消息来交换分配了虚拟块的通道的信息，并且车道状态消息可以基于 链路故障信息由以太网标准指定。

公开(公告)号：US20100158523A1

公开(公告)日：2010-06-24

申请号：US12580177

申请日：2009-10-15

Applicant: Kyeong-eun Han ,  Kwang-joon Kim

Inventor： Kyeong-eun Han ,  Kwang-joon Kim

IPC: H04J14/00

CPC classification number: H04J14/0282 ,  H04J14/0232 ,  H04J14/0238 ,  H04J14/0246

Abstract: Provided are methods of transmitting and receiving a multicast or broadcast frame in an optical line terminal (OLT) and an optical network unit (ONU) for a wavelength division multiplexing (WDM)-passive optical network (PON), a WDM-PON system, and an OLT for a WDM-PON. The method of transmitting a multicast or broadcast frame in an OLT for a WDM-PON includes converting and splitting a multicast or broadcast frame input using a single wavelength into a plurality of wavelengths, combining the split wavelengths, and outputting the multicast or broadcast frame. In this way, a multicast or broadcast frame can be transmitted and received, thereby providing a single copy broadcast (SCB) function in a WDM-PON.

Abstract translation: 提供了在用于波分复用（WDM）无源光网络（PON），WDM-PON系统的光线路终端（OLT）和光网络单元（ONU）中发送和接收组播或广播帧的方法， 和用于WDM-PON的OLT。 在用于WDM-PON的OLT中发送组播或广播帧的方法包括将使用单个波长输入的多播或广播帧转换成多个波长，组合分离波长，并输出多播或广播帧。 以这种方式，可以发送和接收多播或广播帧，从而在WDM-PON中提供单个复制广播（SCB）功能。

公开(公告)号：US20100158520A1

公开(公告)日：2010-06-24

申请号：US12604357

申请日：2009-10-22

Applicant: Kyeong-eun Han ,  Kwang-joon Kim

Inventor： Kyeong-eun Han ,  Kwang-joon Kim

IPC: H04J14/02

CPC classification number: H04J14/0238 ,  H04J14/0228 ,  H04J14/0241 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0257 ,  H04J14/0258 ,  H04J14/0267 ,  H04J14/0269 ,  H04J14/0282 ,  H04Q11/0067 ,  H04Q2011/0088

Abstract: Provided are a local area network (LAN) emulation method and an information storage medium. The LAN emulation method provides a LAN emulation function in an arrayed-waveguide grating (AWG)-based wavelength division multiplexing (WDM)-passive optical network (PON) using a mode bit and a logical link identifier (LLID).

Abstract translation: 提供了局域网（LAN）仿真方法和信息存储介质。 LAN仿真方法使用模式位和逻辑链路标识符（LLID）在基于阵列波导光栅（AWG）的波分复用（WDM）无源光网络（PON）中提供LAN仿真功能。

公开(公告)号：US20100142971A1

公开(公告)日：2010-06-10

申请号：US12628920

申请日：2009-12-01

Applicant: Sun-hyok Chang ,  Hwan-seok Chung ,  Kwang-joon Kim

Inventor： Sun-hyok Chang ,  Hwan-seok Chung ,  Kwang-joon Kim

IPC: H04B10/00 ,  H04B10/06

CPC classification number: H04B10/614 ,  H04B10/61 ,  H04B10/611 ,  H04B10/6164 ,  H04B10/6165

Abstract: Provided is a digital signal synchronization device of a coherent optical receiver. The digital signal synchronization device includes a digital signal processing unit to perform synchronization on a digital signal of an output optical signal generated by interfering an optical signal received through an optical fiber with an optical signal of laser output from a local oscillator and to perform decoding using the synchronized digital signal, and a digital signal managing unit to monitor the digital signal processing unit to output data of the optical signal normally, which has been received through the optical fiber, according to the synchronized digital signal.

Abstract translation: 提供了一种相干光接收机的数字信号同步装置。 数字信号同步装置包括数字信号处理单元，用于对通过光纤接收的光信号与从本地振荡器输出的激光的光信号进行干扰而产生的输出光信号的数字信号进行同步，并且使用 同步数字信号和数字信号管理单元，用于监视数字信号处理单元，以根据同步的数字信号正常地输出已经通过光纤接收的光信号的数据。

公开(公告)号：US20090060504A1

公开(公告)日：2009-03-05

申请号：US12053400

申请日：2008-03-21

Applicant: Sun-hyok Chang ,  Hwan-seok Chung ,  Sang-soo Lee ,  Kwang-joon Kim

Inventor： Sun-hyok Chang ,  Hwan-seok Chung ,  Sang-soo Lee ,  Kwang-joon Kim

IPC: H04J14/02

CPC classification number: H04J14/029 ,  H04J14/0284

Abstract: An apparatus and method for protection switching of an optical channel at each node in an optical network based on wavelength division multiplexing optical transmission technology are provided. The method can be applied to any node having at least two optical fiber inputs and outputs. The apparatus includes: a splitter receiving an electrical signal and splitting the received electrical signal into a plurality of electrical signals which are substantially identical to the received electrical signal; an output switching unit selecting output paths of the electrical signals split by the splitter according to an optical channel path control command of the optical network; and a plurality of optical transponders being assigned to the respective output paths of the electrical signals, converting the electrical signal input by the selection of the output switching unit to an optical signal, and transmitting the converted optical signal to another node of the optical network.

Abstract translation: 提供了一种基于波分复用光传输技术在光网络中的每个节点处保护光信道切换的装置和方法。 该方法可以应用于具有至少两个光纤输入和输出的任何节点。 该装置包括：分离器，其接收电信号并将接收到的电信号分解为与所接收的电信号基本相同的多个电信号; 输出切换单元，根据光网络的光信道路径控制指令，选择由分路器分割的电信号的输出路径; 以及多个光转发器被分配给电信号的相应输出路径，通过输出切换单元的选择将输入的电信号转换为光信号，并将转换的光信号传输到光网络的另一个节点。

公开(公告)号：US06791685B2

公开(公告)日：2004-09-14

申请号：US10066092

申请日：2002-01-31

Applicant: Ji-wook Youn ,  Kwang-joon Kim

Inventor： Ji-wook Youn ,  Kwang-joon Kim

IPC: G01J328

CPC classification number: H04B10/07953 ,  G01J3/18 ,  G01J3/2803 ,  G02B6/2706 ,  G02B6/2766 ,  G02B6/2793 ,  G02B6/2931 ,  G02B6/29385 ,  G02B6/4215 ,  H04B10/077 ,  H04B10/07955 ,  H04B10/07957

Abstract: An optical signal performance monitoring apparatus in a multi-channel optical transmission system and a method for monitoring the optical signal performance. The optical signal performance monitoring apparatus in the multi-channel optical transmission system includes an optical input unit for controlling the spot size of an inputted multi-channel optical signal and generating a 1st multi-channel beam; a diffraction and reflection unit for diffracting and reflecting the 1st multi-channel beam; and generating a 2nd multi-channel beam which is divided by wavelength and is in parallel with the 1st multi-channel beam; an optical collimation and concentration unit for collimating the 1st multi-channel beam and concentrating the 2nd multi-channel beam which is divided by wavelength; and an optical detection unit for measuring the intensity of the 2nd multi-channel beam focused by wavelength, and measuring the optical signal-to-noise ratio by measuring the optical intensity corresponding to each wavelength and an amplified spontaneous emission (ASE) noise strength at a point between optical signals.

Abstract translation: 一种多通道光传输系统中的光信号性能监视装置和用于监视光信号性能的方法。 多通道光传输系统中的光信号性能监视装置包括：光输入单元，用于控制输入的多通道光信号的光斑尺寸并产生第一多通道光束; 用于衍射和反射第一多通道光束的衍射和反射单元; 以及产生由波长除以与第一多通道光束并联的第二多通道光束; 用于准直第一多通道光束并集中被波长除以的第二个多通道光束的光学准直和浓度单元; 以及用于测量由波长聚焦的第二多通道光束的强度的光学检测单元，并且通过测量对应于每个波长的光强度和放大的自发发射（ASE）来测量光信噪比， 光信号之间的一点噪声强度。

公开(公告)号：US08036527B2

公开(公告)日：2011-10-11

申请号：US12053400

申请日：2008-03-21

Applicant: Sun-hyok Chang ,  Hwan-seok Chung ,  Sang-soo Lee ,  Kwang-joon Kim

Inventor： Sun-hyok Chang ,  Hwan-seok Chung ,  Sang-soo Lee ,  Kwang-joon Kim

IPC: G02F1/00 ,  G02F2/00 ,  H01S3/00 ,  H04B10/00 ,  H04J14/00

CPC classification number: H04J14/029 ,  H04J14/0284

Abstract: An apparatus and method for protection switching of an optical channel at each node in an optical network based on wavelength division multiplexing optical transmission technology are provided. The method can be applied to any node having at least two optical fiber inputs and outputs. The apparatus includes: a splitter receiving an electrical signal and splitting the received electrical signal into a plurality of electrical signals which are substantially identical to the received electrical signal; an output switching unit selecting output paths of the electrical signals split by the splitter according to an optical channel path control command of the optical network; and a plurality of optical transponders being assigned to the respective output paths of the electrical signals, converting the electrical signal input by the selection of the output switching unit to an optical signal, and transmitting the converted optical signal to another node of the optical network.

Abstract translation: 提供了一种基于波分复用光传输技术在光网络中的每个节点处保护光信道切换的装置和方法。 该方法可以应用于具有至少两个光纤输入和输出的任何节点。 该装置包括：分离器，其接收电信号并将接收到的电信号分解为与所接收的电信号基本相同的多个电信号; 输出切换单元，根据光网络的光信道路径控制指令，选择由分路器分割的电信号的输出路径; 以及多个光转发器被分配给电信号的相应输出路径，通过输出切换单元的选择将输入的电信号转换为光信号，并将转换的光信号传输到光网络的另一个节点。

公开(公告)号：US07394983B2

公开(公告)日：2008-07-01

申请号：US10685795

申请日：2003-10-14

Applicant: Wang-joo Lee ,  Kwang-joon Kim ,  Sung-hoon Kwak

Inventor： Wang-joo Lee ,  Kwang-joon Kim ,  Sung-hoon Kwak

IPC: H04J14/00

CPC classification number: G02B6/359 ,  G02B6/3512 ,  G02B6/3546 ,  H04Q11/0005 ,  H04Q2011/0015 ,  H04Q2011/0024 ,  H04Q2011/003 ,  H04Q2011/0039 ,  H04Q2011/0083

Abstract: Provided are a method and an apparatus for detecting the fault of an optical switch. The apparatus includes an optical monitoring signal generator, a coupler, a splitter, a plurality of optical detecting and output power transition sensing units, and a fault determiner. The optical monitoring signal generator generates optical monitoring signals having different wavelengths from optical signals including data to be transmitted. The coupler optically couples the optical monitoring signals to the optical signals including data to be transmitted and inputs the coupled optical signals to an optical switch. The splitter splits the optical monitoring signals from optical signals output from the optical switch. The plurality of optical detecting and output power transition sensing units detect output power transitions of the split optical monitoring signals. The fault determiner receives information on setting the optical switch from an external source, compares the information with the detected output power transitions of the split optical monitoring signals, and determines whether the optical switch malfunctions depending on whether the information coincides with the detected output power transitions of the split optical monitoring signals.

Abstract translation: 提供了一种用于检测光开关故障的方法和装置。 该装置包括光学监视信号发生器，耦合器，分离器，多个光学检测和输出功率转换感测单元以及故障确定器。 光监视信号发生器产生具有不同波长的光监视信号，光信号包括待传输的数据。 耦合器将光学监视信号光耦合到包括要发送的数据的光信号，并将耦合的光信号输入到光开关。 分路器从光学开关输出的光信号分离光学监控信号。 多个光学检测和输出功率转换感测单元检测分离光学监视信号的输出功率转换。 故障确定器接收关于从外部源设置光开关的信息，将信息与检测到的分离光监视信号的输出功率转换进行比较，并根据信号是否与检测到的输出功率转换一致，确定光开关是否发生故障 的分割光学监控信号。

公开(公告)号：US08224190B2

公开(公告)日：2012-07-17

申请号：US12618579

申请日：2009-11-13

Applicant: Hwan-seok Chung ,  Sun-hyok Chang ,  Sang-soo Lee ,  Kwang-joon Kim

Inventor： Hwan-seok Chung ,  Sun-hyok Chang ,  Sang-soo Lee ,  Kwang-joon Kim

IPC: H04B10/04

CPC classification number: H04B10/2557 ,  H04J14/0224 ,  H04J14/0257 ,  H04J14/026 ,  H04J14/0279

Abstract: Provided is a channel assignment method in a wavelength-division-multiplexed transmission system. The channel assignment method includes obtaining information about signal modulation schemes from a plurality of optical transmitters, and assigning channels to the respective optical transmitters in consideration of the obtained information about the signal modulation schemes. Accordingly, in transmission of channels of different modulation formats, cross phase modulation is minimized, thereby reducing inter-channel interference.

Abstract translation: 提供了一种波分复用传输系统中的信道分配方法。 信道分配方法包括从多个光发射机获取关于信号调制方案的信息，并且考虑所获得的关于信号调制方案的信息，向各个光发射机分配信道。 因此，在传输不同调制格式的信道时，交叉相位调制被最小化，从而减少信道间干扰。