公开(公告)号：US08355612B2

公开(公告)日：2013-01-15

申请号：US12543852

申请日：2009-08-19

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

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

IPC: G02B6/42 ,  H04J14/02

CPC classification number: G02B6/4215 ,  G02B6/4212 ,  G02B6/4226

Abstract: 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.

Abstract translation: 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：US08116623B2

公开(公告)日：2012-02-14

申请号：US12127493

申请日：2008-05-27

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: H04B10/00

CPC classification number: H04J14/0283 ,  H04J14/0204 ,  H04J14/0209 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0286 ,  H04J14/0294 ,  H04J14/0295 ,  H04Q2011/0081 ,  H04Q2011/0092

Abstract: Provided is a multi-ring network operating method of cross-connecting at least two ring networks, the method including connecting an input working ring and an input protection ring of a ring network to an output working ring and an output protection ring of another ring network and then performing cross-connection between the same or different ring networks by using a multi-dimensional cross-connect apparatus. In the multi-ring operating method, a plurality of ring networks can be connected regardless of the protection method used by the ring networks, and the original protection method of each ring network can remain after they are connected.

Abstract translation: 提供一种交换连接至少两个环网的多环网操作方法，该方法包括将环网的输入工作环和输入保护环连接到另一环网的输出工作环和输出保护环 然后通过使用多维交叉连接装置在相同或不同的环形网络之间执行交叉连接。 在多环操作方法中，无论环网使用的保护方式如何，都可以连接多个环网，每个环网的原始保护方法可以在连接后保留。

公开(公告)号：US20110026123A1

公开(公告)日：2011-02-03

申请号：US12773129

申请日：2010-05-04

Applicant: Joon-ki LEE ,  Sae-kyoung KANG ,  Jyung-chan LEE ,  Kwang-joon KIM

Inventor： Joon-ki LEE ,  Sae-kyoung KANG ,  Jyung-chan LEE ,  Kwang-joon KIM

IPC: G02B5/28

CPC classification number: G02B27/145 ,  G02B27/1006

Abstract: A wavelength-division apparatus and a wavelength combining apparatus are provided. Each of the wavelength-division apparatus and the wavelength combining apparatus includes a transparent block having one surface which is coated with an anti-reflective coating layer and the other surface which is coated with a partial transmitting coating layer. Each of the anti-reflective coating layer and the partial transmitting coating layer is coupled to a plurality of wavelength-selective filters that separate optical signals of different wavelengths through different paths other than a transmission path or a receiving path. Thus, the optical signals of the respective wavelengths output through the different paths can be used for various purposes such as monitoring the signal intensity and/or the signal quality.

Abstract translation: 提供了一种波分分割装置和波长组合装置。 波分分割装置和波长组合装置中的每一个包括具有一个表面的透明块，该表面涂覆有抗反射涂层，另一个表面涂覆有部分透射涂层。 抗反射涂层和部分透射涂层中的每一个耦合到多个波长选择滤光器，其通过除传输路径或接收路径之外的不同路径分离不同波长的光信号。 因此，通过不同路径输出的各个波长的光信号可以用于各种目的，例如监视信号强度和/或信号质量。

公开(公告)号：US20100158531A1

公开(公告)日：2010-06-24

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: H04J14/02

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，并且考虑到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。

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：US20090060499A1

公开(公告)日：2009-03-05

申请号：US12060660

申请日：2008-04-01

Applicant: Hwan-seok Chung ,  Sang-soo LEE ,  Sun-hyok CHANG ,  Kwang-joon KIM

Inventor： Hwan-seok Chung ,  Sang-soo LEE ,  Sun-hyok CHANG ,  Kwang-joon KIM

IPC: H04B10/08

CPC classification number: H04B10/0795 ,  H04B2210/072 ,  H04J3/14 ,  H04J14/02

Abstract: An apparatus and method for monitoring quality of an optical signal in an optical network based on wavelength division multiplexing optical transmission technology are provided, which are capable of monitoring the quality of an optical signal with higher accuracy. The apparatus includes: a signal extractor extracting an optical signal having a specific wavelength from input optical signals; an optical-electrical converter converting the extracted optical signal having the specific wavelength into an electrical signal; an overhead parser extracting a part of an overhead of the electrical signal to parse whether or not the quality of the signal is degraded; and a controller monitoring the quality of the optical signal according to the parsing result of the extracted overhead and restoring the optical signal whose quality is lower than a predetermined reference value.

Abstract translation: 提供了一种基于波分复用光传输技术来监测光网络中的光信号质量的装置和方法，其能够以更高精度监视光信号的质量。 该装置包括：信号提取器，从输入光信号中提取具有特定波长的光信号; 将所提取的具有特定波长的光信号转换为电信号的光电转换器; 开销解析器，提取电信号的开销的一部分，以解析信号的质量是否劣化; 以及控制器，根据所提取的开销的解析结果监视光信号的质量，并恢复质量低于预定参考值的光信号。

公开(公告)号：US20080107431A1

公开(公告)日：2008-05-08

申请号：US11871357

申请日：2007-10-12

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

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

IPC: H04B10/04

CPC classification number: H04B10/572 ,  H01S5/0612 ,  H01S5/0683 ,  H01S5/0687

Abstract: 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.

Abstract translation: 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：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：US06606190B2

公开(公告)日：2003-08-12

申请号：US09997421

申请日：2001-11-28

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

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

IPC: H04B1012

CPC classification number: H01S3/06758

Abstract: 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：US6060704A

公开(公告)日：2000-05-09

申请号：US842870

申请日：1997-04-17

Applicant: Kyung-Sook Hyun ,  O-Kyun Kwon ,  Kwang-Joon Kim ,  El-Hang Lee

Inventor： Kyung-Sook Hyun ,  O-Kyun Kwon ,  Kwang-Joon Kim ,  El-Hang Lee

IPC: H01L31/0352 ,  H01L27/14

CPC classification number: B82Y20/00 ,  H01L31/035236

Abstract: For a multiple transmission communication system, how to individually isolate the transmitted lights and then to distribute to the terminals has been primary concerns to be solved. In the photodetector structure, an absorption layer may be configured as either multiple quantum well structures corresponding to operational wavelengths, or filter-based structure, allowing to select wavelengths in a 1:2:4:8 ratio as an absorptance for each wavelength. In case of using such four-fold lights, the determination as to which wavelength among four-fold wavelengths can be made based upon the total amounts of the current flow in such a photodetector. The photodetector employing such schemes is provided from the present invention.

Abstract translation: 对于多传输通信系统，如何单独隔离发射的光，然后分发到终端，这是首要考虑的问题。 在光检测器结构中，吸收层可以被配置为对应于操作波长的多个量子阱结构或基于滤波器的结构，允许以1:2:4:8的比率选择波长作为每个波长的吸收率。 在使用这种四重光的情况下，可以基于这种光电检测器中的电流的总量来确定四倍波长中的哪个波长。 采用这种方案的光电探测器由本发明提供。