公开(公告)号：US07486890B2

公开(公告)日：2009-02-03

申请号：US11289906

申请日：2005-11-29

Applicant: Hyun Jae Lee ,  Kwang Joon Kim

Inventor： Hyun Jae Lee ,  Kwang Joon Kim

IPC: H04J14/00

CPC classification number: H04J14/0227 ,  H04B10/40 ,  H04J14/0226 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282

Abstract: Provided are an optical transmission apparatus and method using a light source for wavelength division multiplexing (WDM) optical communication that employs a Fabry-Perot laser diode (F-P LD) whose output wavelength is locked by an externally injected incoherent light, a multifiber, and a waveguide grating router. The light transmission apparatus includes: an incoherent light source (ILS) outputting incoherent light; a plurality of circulators (CIRs) connected to the ILS, receiving the incoherent light from the ILS, and outputting first optical signals; a first waveguide grating router (WGR) outputting the first optical signals output from each of the CIRs to optical fibers corresponding to each of the CIRs, and outputting second optical signals input from the optical fibers to the corresponding CIRs; a plurality of second WGRs corresponding to each of the CIRs, and demodulating the second optical signals output from each of the plurality of CIRs; and a plurality of receivers connected to the plurality of the second WGRs, and inputting the demultiplexed optical signals output from the plurality of second WGRs. A plurality of light sources for WDM optical communication whose output wavelength is locked can increase size and economical efficiency of a light transmission system (subscriber). The N×N WGR can produce a conventional light transmission system and accommodate many subscribers.

Abstract translation: 本发明提供一种使用波分复用（WDM）光通信的光源的光传输装置和方法，该光通信使用其输出波长被外部注入的非相干光锁定的法布里 - 珀罗激光二极管（FP LD），多光纤和 波导光栅路由器。 光传输装置包括：输出非相干光的非相干光源（ILS）; 连接到ILS的多个循环器（CIR），接收来自ILS的非相干光，并输出第一光信号; 将从每个CIR输出的第一光信号输出到与每个CIR对应的光纤的第一波导光栅路由器（WGR），并将从光纤输入的第二光信号输出到对应的CIR; 对应于每个CIR的多个第二WGR，并解调从多个CIR中的每一个输出的第二光信号; 以及连接到所述多个所述第二WGR的多个接收器，以及输入从所述多个第二WGR输出的解复用的光信号。 输出波长锁定的多个用于WDM光通信的光源可以增加光传输系统（用户）的尺寸和经济性。 NxN WGR可以生产传统的光传输系统，并适应许多用户。

公开(公告)号：US20080317466A1

公开(公告)日：2008-12-25

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: H04J14/00

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：US20070147833A1

公开(公告)日：2007-06-28

申请号：US11591214

申请日：2006-11-01

Applicant: Yun-Hee Cho ,  Kwang-Joon Kim

Inventor： Yun-Hee Cho ,  Kwang-Joon Kim

IPC: H04J14/00

CPC classification number: H04J14/0227 ,  H04J14/0212 ,  H04J14/0284

Abstract: A wavelength allocation method and apparatus that is capable minimizing the number of wavelength converters is provided. In a dynamic wavelength multiplexing division network structure having a limited maximum transmission distance, an optical path is established to maximally suppress activation of a 3R wavelength converter, thereby maximizing efficiency of the 3R wavelength converter. In a dynamic wavelength multiplexing division network structure having a limited maximum transmission distance, a new optical path is established to minimize 3R wavelength conversion and suppress use of unnecessary expensive 3R wavelength converters and thereby increase network efficiency.

Abstract translation: 提供了能够使波长转换器的数量最小化的波长分配方法和装置。 在具有有限的最大传输距离的动态波长复用分割网络结构中，建立光路以最大限度地抑制3R波长转换器的激活，从而使3R波长转换器的效率最大化。 在具有有限的最大传输距离的动态波长复用分割网络结构中，建立新的光路以最小化3R波长转换并抑制不必要昂贵的3R波长转换器的使用，从而提高网络效率。

公开(公告)号：US20070133985A1

公开(公告)日：2007-06-14

申请号：US11633170

申请日：2006-12-04

Applicant: Yun-Hee Cho ,  Kwang-Joon Kim

Inventor： Yun-Hee Cho ,  Kwang-Joon Kim

IPC: H04J14/00

CPC classification number: H04J14/0227 ,  H04J14/0212 ,  H04J14/0241 ,  H04J14/0284

Abstract: In a wavelength allocation method in a wavelength division multiplexing network, a 3R wavelength converter having a limited wavelength conversion range is disposed according to a wavelength conversion band of each node, at least one path set between transmitting/receiving nodes is selected, routing paths corresponding to the number of the selected at least one path set between the transmitting/receiving nodes having a request for a new optical path generation are extracted, it is determined whether there is a wavelength consecutive segment set that satisfies a maximum transmission distance for guaranteeing transmission quality of an optical signal and that includes one consecutive wavelength among the extracted routing paths, and a path using a first-fit wavelength is selected from paths of each wavelength consecutive segment and the wavelength is allocated when determining that there is a wavelength consecutive segment set.

Abstract translation: 在波分复用网络中的波长分配方法中，根据每个节点的波长转换带布置具有有限波长转换范围的3R波长转换器，选择发送/接收节点之间设置的至少一个路径，对应的路由路径 提取具有对新的光路生成的请求的发送/接收节点之间的所选择的至少一个路径集合的数量，确定是否存在满足用于保证传输质量的最大传输距离的波长连续段集合 并且在所提取的路由路径中包括一个连续波长，并且从每个波长连续片段的路径中选择使用第一拟合波长的路径，并且当确定存在波长连续片段集时分配波长。

公开(公告)号：US07075694B2

公开(公告)日：2006-07-11

申请号：US10863741

申请日：2004-06-07

Applicant: Youn Seon Jang ,  Kwang Joon Kim ,  Jyung Chan Lee ,  Seung Il Myong

Inventor： Youn Seon Jang ,  Kwang Joon Kim ,  Jyung Chan Lee ,  Seung Il Myong

IPC: G02B26/00

CPC classification number: H04B10/50595 ,  G02F1/0123 ,  H04B10/505 ,  H04B10/5051 ,  H04B10/50575 ,  H04B10/508 ,  H04B10/5162 ,  H04B10/5165 ,  H04B2210/003

Abstract: 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.

Abstract translation: 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

Applicant: Seung Il Myong ,  Kwang Joon Kim ,  Jyung Chan Lee ,  Sang Kyu Lim

Inventor： Seung Il Myong ,  Kwang Joon Kim ,  Jyung Chan Lee ,  Sang Kyu Lim

IPC: H03H7/01 ,  H03J3/00 ,  H03J7/02

CPC classification number: H03H7/12

Abstract: 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.

Abstract translation: 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：US06928243B2

公开(公告)日：2005-08-09

申请号：US09736267

申请日：2000-12-15

Applicant: Ji-Wook Youn ,  Sung-Un Lee ,  Kwang-Joon Kim ,  Jong-Hyun Lee

Inventor： Ji-Wook Youn ,  Sung-Un Lee ,  Kwang-Joon Kim ,  Jong-Hyun Lee

IPC: H04B10/077 ,  H04B10/079 ,  H04J14/02 ,  H04B10/08

CPC classification number: H04B10/077 ,  H04B10/07955 ,  H04J14/02

Abstract: The optical performance monitoring apparatus includes a first optical distributor for distributing a WDM optical signal branched from an optical transmission line, a plurality of wavelength selectors, each for selecting a predetermined wavelength optical signal from the optical signal distributed, a plurality of first optical detectors, each for detecting power of the predetermined wavelength optical signal for a corresponding one of channels selected by the wavelength selectors; and a signal processor for measuring the power for each channel of the WDM optical signal, a total ASE noise power, and an optical signal-to-noise ratio for each channel from the digital value.

Abstract translation: 光学性能监视装置包括用于分配从光传输线分支的WDM光信号的第一光分配器，用于从分配的光信号中选择预定波长光信号的多个波长选择器，多个第一光检测器， 每个用于检测由波长选择器选择的相应一个通道的预定波长光信号的功率; 以及信号处理器，用于从数字值测量每个信道的WDM光信号的每个信道的功率，总ASE噪声功率和每个信道的光信噪比。

公开(公告)号：US06570698B2

公开(公告)日：2003-05-27

申请号：US09750072

申请日：2000-12-29

Applicant: Bong-Kyu Kim ,  Kwang-Joon Kim ,  Jong-Hyun Lee ,  Seung-Il Myong

Inventor： Bong-Kyu Kim ,  Kwang-Joon Kim ,  Jong-Hyun Lee ,  Seung-Il Myong

IPC: G02F101

CPC classification number: G02F1/0123 ,  H04B10/5051 ,  H04B10/50575 ,  H04B10/58

Abstract: An apparatus and a method for modulating the optical intensity, with the noises suppressed by using a linear optical modulator, are disclosed, so that the characteristics of signals transmitted from an optical communication system can be improved, and that the resolution of the measured physical quantities can be improved in an optical measuring instrument. The method is carried out in the following manner. That is, the magnitude of frequency is measured by utilizing pilot signals and electrical signals to transfer negatively fed-back signals to an optical intensity modulator. The phase is delayed by generating pilot signals so as to suppress an amplitude noise from the pilot signal caused by nonlinear modulation at the optical intensity modulator. A linear modulation is carried out on the phase-delayed signals and on optical signals from an external source to provide a linear component. The bias voltage is adjusted in accordance with the negatively fed-back signals, and an optical intensity modulation is carried out on the linearly modulated signals and on the added signals, the added signals having been formed by combining the data signals and the pilot signals.

公开(公告)号：US6115375A

公开(公告)日：2000-09-05

申请号：US967797

申请日：1997-11-10

Applicant: Kwang Joon Kim ,  O Kyun Kwon ,  Kyung Sook Hyun ,  Seok Ho Song ,  El Hang Lee

Inventor： Kwang Joon Kim ,  O Kyun Kwon ,  Kyung Sook Hyun ,  Seok Ho Song ,  El Hang Lee

IPC: H04B10/00 ,  H04Q11/00 ,  H04L12/50

CPC classification number: H04Q11/0003 ,  H04Q11/0005 ,  H04Q2011/0035

Abstract: A multistage optical packet switching apparatus with self electro-optic-effect device is disclosed. The apparatus is formed with multistage structure using a plurality of symmetrical self electro-optic-effect devices, self-routing being performed by the control for a header part of optical packets after self-duplication and amplification for the input optical signal. The optical packet switching apparatus using a plurality of symmetrical self electro-optic-effect devices includes a front stage having first and second self electro-optic-effect devices interconnected and a back stage having third and fourth self electro-optic-effect devices interconnected, the 1.quadrature. multistage structure comprising the unit switching modules interconnected each comprising the front and the back stages, the self-duplication and amplification being performed in the front stage and the switching being performed in the back stage. The use of the apparatus is an optical exchange.

Abstract translation: 公开了具有自电光效应装置的多级光分组交换装置。 该装置使用多个对称的自电光效应装置形成多级结构，通过对输入光信号的自复制和放大之后的光分组的标题部分的控制执行自路由。 使用多个对称的自电光效应装置的光分组交换装置包括具有互连的第一和第二自电光效应装置的前级和具有互连的第三和第四自电光效应装置的后级， 包括各自包括前级和后级的单元切换模块的1＆amp;多级结构，在前级执行自复制和放大，并且在后级执行切换。 该装置的使用是光交换。