公开(公告)号：US20060115271A1

公开(公告)日：2006-06-01

申请号：US11058793

申请日：2005-02-16

申请人： Seong-Taek Hwang ,  Yun-Je Oh ,  Dae-Kwang Jung ,  Jin-Woo Park ,  Sung-Kuen Lee ,  Yong-Won Lee ,  Sang-Rok Lee ,  Sang-Mo Hong

发明人： Seong-Taek Hwang ,  Yun-Je Oh ,  Dae-Kwang Jung ,  Jin-Woo Park ,  Sung-Kuen Lee ,  Yong-Won Lee ,  Sang-Rok Lee ,  Sang-Mo Hong

IPC分类号： H04J14/00

CPC分类号： H04J14/0227 ,  H04J14/0226 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/025 ,  H04J14/0252 ,  H04J14/0282

摘要： Disclosed is a method for operating a wavelength-division-multiplexed passive optical network (WDM-PON) including an optical line terminal (OLT) and a plurality of optical network units (ONUs), each of which is connected to the OLT and communicates with the OLT. The method comprises the steps of transmitting a first control channel including allocation information of downstream data channels and allocation information of time slots for the downstream data channels to each of the plurality of ONUs; and transmitting downstream data to the plurality of ONUs using their associated downstream data channels, each having at least one time slot, based on the information included in the first control channel.

摘要翻译： 公开了一种用于操作包括光线路终端（OLT）和多个光网络单元（ONU）的波分复用无源光网络（WDM-PON）的方法，每个光网络单元（ONU）连接到OLT并与 OLT。 该方法包括以下步骤：向多个ONU中的每一个发送包括下行数据信道的分配信息的第一控制信道和用于下行数据信道的时隙的分配信息; 以及基于包括在所述第一控制信道中的信息，使用其相关联的下游数据信道向所述多个ONU发送下行数据，每个ONU具有至少一个时隙。

公开(公告)号：US20060067612A1

公开(公告)日：2006-03-30

申请号：US11185105

申请日：2005-07-20

申请人： Dae-Kwang Jung ,  Yun-Je Oh ,  Seong-Taek Hwang

发明人： Dae-Kwang Jung ,  Yun-Je Oh ,  Seong-Taek Hwang

IPC分类号： G02B6/28

CPC分类号： G02B6/29362 ,  G02B6/29383

摘要： Disclosed is a bidirectional optical add/drop multiplexer that includes a first filter for reflecting a first optical signal pre-selected among input forward optical signals and transmitting the remaining forward optical signals, a second filter for reflecting a second optical signal pre-selected among input reverse optical signals and transmitting the remaining reverse optical signals, a first optical splitter for combining the first optical signal and the forward optical signals by reflection from the first filter, wherein the reflected second optical signal having passed through the first filter is outputted to a connected second drop terminal and the first optical signal input from a connected first add terminal is outputted to the first filter, and a second optical splitter for adding the second optical signal and the reverse optical signals by reflection from the second filter, wherein the reflected first optical signal having passed through the second filter is outputted to a connected first drop terminal and the second optical signal input from a connected second add terminal is outputted to the second filter.

摘要翻译： 公开了一种双向光分插复用器，其包括：第一滤波器，用于反射在输入的正向光信号中预先选择的第一光信号和发送剩余的前向光信号;第二滤波器，用于反映在输入中预先选择的第二光信号 反向光信号并发送剩余的反向光信号，第一分光器，用于通过来自第一滤光器的反射组合第一光信号和正光信号，其中已经穿过第一滤光器的反射的第二光信号被输出到连接 第二分支终端和从连接的第一加法终端输入的第一光信号被输出到第一滤波器，以及第二分光器，用于通过来自第二滤波器的反射来添加第二光信号和反相光信号，其中反射的第一光 已经通过第二滤波器的信号被输出到co 连接的第一分接端子和从连接的第二加法端子输入的第二光信号被输出到第二滤波器。

公开(公告)号：US07340173B2

公开(公告)日：2008-03-04

申请号：US10776720

申请日：2004-02-11

申请人： Dong-Jae Shin ,  Dae-Kwang Jung ,  Jea-Hyuck Lee ,  Jung-Kee Lee ,  Jeong-Seok Lee ,  Seong-Taek Hwang ,  Yun-Je Oh

发明人： Dong-Jae Shin ,  Dae-Kwang Jung ,  Jea-Hyuck Lee ,  Jung-Kee Lee ,  Jeong-Seok Lee ,  Seong-Taek Hwang ,  Yun-Je Oh

IPC分类号： H04J14/02 ,  H04J14/00

CPC分类号： H04J14/02 ,  H04B10/506

摘要： A WDM (Wavelength Division Multiplexing) optical transmitter using a Fabry-Perot laser is disclosed. The WDM optical transmitter includes a light source for outputting incoherent light of a prescribed wavelength bandwidth, a circulator having the first to the third ports, for outputting the incoherent light received at the first port coupled to the light source to the second port, and outputting an optical signal received at the second port to the third port coupled to the external waveguide, a WGR (Waveguide Grating Router) having a multiplexing port (MP) coupled to the second port of the circulator and a plurality of demultiplexing ports (DPs), for performing WD (Wavelength Division) demultiplexing on the incoherent light received at the MP to output WD-demultiplexed signals to the plurality of DPs, and performing WD multiplexing on a plurality of channel signals received at the plurality of DPs to output WD-multiplexed signals to the MP, and a plurality of FB (Fabry-Perot) lasers respectively connected to the DPs of the WGR, each FP laser is comprised of a laser cavity, an antireflection coating layer deposited at one end of the laser cavity facing a corresponding DP, and a high reflection coating layer deposited at the other end of the laser cavity, whereby an optical injection efficiency increases and an influence of reflected light is reduced, resulting in facilitation of a wavelength-locked phenomenon.

摘要翻译： 公开了一种使用法布里 - 珀罗激光器的WDM（波分复用）​​光发射机。 WDM光发射机包括用于输出规定波长带宽的非相干光的光源，具有第一至第三端口的循环器，用于将耦合到光源的第一端口处接收到的非相干光输出到第二端口，并输出 在第二端口处接收到耦合到外部波导的第三端口的光信号，具有耦合到循环器的第二端口的复用端口（MP）的WGR（波导光栅路由器）和多个解复用端口（DP） 用于对在MP处接收到的非相干光进行WD（波分）解复用，以将WD分离的信号输出到多个DP，并且对在多个DP上接收的多个信道信号执行WD复用以输出WD复用信号 MP和分别连接到WGR的DP的多个FB（Fabry-Perot）激光器，每个FP激光器由激光腔，抗雷 在激光腔的面对相应的DP的一端沉积的吸收层，以及沉积在激光腔的另一端的高反射涂层，由此光注入效率增加并且反射光的影响减小，导致促进 的波长锁定现象。

公开(公告)号：US07254340B2

公开(公告)日：2007-08-07

申请号：US10780132

申请日：2004-02-17

申请人： Dae-Kwang Jung ,  Yun-Je Oh ,  Seong-Taek Hwang

发明人： Dae-Kwang Jung ,  Yun-Je Oh ,  Seong-Taek Hwang

IPC分类号： H04J14/02 ,  H04B10/00

CPC分类号： H04J14/0282 ,  H04B10/2587 ,  H04B10/506 ,  H04B10/572 ,  H04J14/02 ,  H04J14/0226 ,  H04J14/0246 ,  H04J14/025 ,  H04J2014/0253

摘要： An optical wavelength tracking apparatus and method in a wavelength division multiplexed (WDM) passive optical network (PON) in which a central office (CO) having a multi-frequency light source is connected to a plurality of optical network units (ONUs) having loop-back light sources through a WDM MUX/DEMUX in a remote node (RN). The power levels of downstream and upstream WDM optical signals are measured. The WDM wavelengths of the multi-frequency light source and the WDM MUX/DEMUX are controlled to be nearly identical in order to minimize the difference between the power levels of the downstream and upstream WDM optical signals.

摘要翻译： 一种波分复用（WDM）无源光网络（PON）中的光波长跟踪装置和方法，其中具有多频光源的中心局（CO）连接到具有环路的多个光网络单元（ONU） 通过远程节点（RN）中的WDM MUX / DEMUX来返回光源。 测量下行和上行WDM光信号的功率电平。 控制多频光源和WDM MUX / DEMUX的WDM波长几乎相同，以便最小化下行和上行WDM光信号的功率电平之间的差异。

公开(公告)号：US20060104636A1

公开(公告)日：2006-05-18

申请号：US11281761

申请日：2005-11-17

申请人： Dae-Kwang Jung ,  Chang-Sup Shim ,  Yun-Je Oh ,  Seong-Taek Hwang

发明人： Dae-Kwang Jung ,  Chang-Sup Shim ,  Yun-Je Oh ,  Seong-Taek Hwang

IPC分类号： H04B10/20

CPC分类号： H04J14/0291 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0282 ,  H04J14/0283

摘要： A bi-directional metro-access optical network includes a central office for generating beams of different wavelength bands and a plurality of wavelength locked downward optical signals and for detecting wavelength locked upward optical signals; a plurality of nodes for detecting the downward optical signals of different wavelengths and for generating the wavelength locked upward optical signals of which wavelengths are locked by respective wavelength beams; a first optical fiber line for linking together each of the nodes with the central office in a ring shape, transmitting the upward optical signals to the central office, and transmitting the downward optical signals and the beams to each of the nodes; and a second optical fiber line for linking together each of the nodes with the central office in a ring shape along the circumference of the first optical fiber line.

摘要翻译： 双向地铁接入光网络包括用于产生不同波长带的波束和多个波长锁定的向下的光信号的中心局和用于检测波长锁定的向上的光信号; 多个节点，用于检测不同波长的向下的光信号，并产生波长锁定的上行光信号，波长由各波长波束锁定; 用于将每个节点与中心局以环形形式连接在一起的第一光纤线路，将向上的光信号传输到中心局，并将向下的光信号和光束传输到每个节点; 以及第二光纤线路，用于将每个节点与中心局沿着第一光纤线路的圆周以环形形状连接在一起。

公开(公告)号：US20080056167A1

公开(公告)日：2008-03-06

申请号：US11737797

申请日：2007-04-20

申请人： Sang-Ho KIM ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Jae-Hun Cho ,  Jae-Hoon Lee

发明人： Sang-Ho KIM ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Jae-Hun Cho ,  Jae-Hoon Lee

IPC分类号： H04L5/14 ,  H04L5/16

CPC分类号： H04B10/25759 ,  H04W88/08 ,  H04W88/085

摘要： A radio-over-fiber (RoF) system and method for controlling a transmission time is provided. In a Time Division Duplex (TDD) wireless communication system comprising a Base Station (BS) having a donor and a remote connected thereto via am optical fiber, upstream and downstream Radio Frequency (RF) signals are transmitted and received, and by reliably transmitting a switch control signal to the remote and simultaneously compensating for a transmission time delay occurring in the optical cable, time synchronization of the upstream and downstream RF signals transmitted and received via antennas of the BS and the remote is controlled, thereby efficiently increasing the performance of a TDD wireless service system.

摘要翻译： 提供了一种用于控制传输时间的无线电光纤（RoF）系统和方法。 在包括具有供体的基站（BS）和经由光纤远程连接的基站（TDD）的时分双工（TDD）无线通信系统中，发送和接收上行和下行射频（RF）信号，并且通过可靠地发送 切换控制信号到远端，并同时补偿在光缆中发生的传输时延，控制通过BS和遥控器的天线发送和接收的上行和下行RF信号的时间同步，从而有效提高 TDD无线服务系统。

公开(公告)号：US07280719B2

公开(公告)日：2007-10-09

申请号：US11143238

申请日：2005-06-02

申请人： Jae-Hoon Lee ,  Sung-Bum Park ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Hyun-Soo Kim

发明人： Jae-Hoon Lee ,  Sung-Bum Park ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Hyun-Soo Kim

IPC分类号： G02B6/28

CPC分类号： H04J14/02 ,  H04B10/296 ,  H04B10/2972

摘要： A wideband optical module includes a downward wideband light source for generating downward light, an upward wideband light source for generating upward light, a first circulator including a first to a third port for outputting multiplexed downward optical signals to the second port and for outputting multiplexed upward optical signals to the first port, a second circulator including a first to a third port for outputting multiplexed upward optical signals to the second port and for outputting multiplexed downward optical signals to the first port, a first optical coupler connected to the third port of the first circulator and the second port of the second circulator for outputting the downward light to the third port of the first circulator, and a second optical coupler connected to the second port of the first circulator and the third port of the second circulator for outputting the upward light to the third port of the second circulator.

摘要翻译： 宽带光模块包括用于产生向下的光的向下宽带光源，用于产生向上光的向上宽带光源，包括第一至第三端口的第一循环器，用于将多路复用的下行光信号输出到第二端口并用于输出多路复用 光信号到第一端口，第二循环器，包括第一至第三端口，用于将多路复用的上行光信号输出到第二端口，并将多路复用的下行光信号输出到第一端口;第一光耦合器，连接到第一端口的第三端口 第一循环器和第二循环器的第二端口，用于将向下的光输出到第一循环器的第三端口;以及第二光耦合器，连接到第一循环器的第二端口和第二循环器的第三端口，用于输出向上 光到第二个循环器的第三个端口。

公开(公告)号：US20070147835A1

公开(公告)日：2007-06-28

申请号：US11606666

申请日：2006-11-30

申请人： Sang-Ho Kim ,  Seong-Taek Hwang ,  Kwan-Soo Lee ,  Yun-Je Oh ,  Jae-Hoon Lee

发明人： Sang-Ho Kim ,  Seong-Taek Hwang ,  Kwan-Soo Lee ,  Yun-Je Oh ,  Jae-Hoon Lee

IPC分类号： H04J14/00

CPC分类号： H04J14/0226 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282 ,  H04J2014/0253

摘要： A method for controlling optical transmitters in a Wavelength Division Multiplexed (WDM)-Passive Optical Network (PON) system includes the steps of: determining the existence of an upward optical signal to control an optical transmitter provided for each corresponding Optical Node Terminal (ONT) to be turned on/off in an Optical Line Termination (OLT); and monitoring the state of a transmission buffer within an Ethernet switch to control a corresponding optical transmitter to be turned on/off in accordance with the state of the transmission buffer in each of the ONTs.

摘要翻译： 一种用于控制波分复用（WDM）无源光网络（PON）系统中的光发射机的方法包括以下步骤：确定存在向上的光信号以控制为每个对应的光节点终端（ONT）提供的光发射机， 在光线路终端（OLT）中打开/关闭; 以及监视以太网交换机内的发送缓冲器的状态，以根据每个ONT中的发送缓冲器的状态来控制相应的光发送器被接通/断开。

公开(公告)号：US20060029393A1

公开(公告)日：2006-02-09

申请号：US11143238

申请日：2005-06-02

申请人： Jae-Hoon Lee ,  Sung-Bum Park ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Hyun-Soo Kim

发明人： Jae-Hoon Lee ,  Sung-Bum Park ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Hyun-Soo Kim

IPC分类号： H04J14/00

CPC分类号： H04J14/02 ,  H04B10/296 ,  H04B10/2972

摘要： A wideband optical module includes a downward wideband light source for generating downward light, an upward wideband light source for generating upward light, a first circulator including a first to a third port for outputting multiplexed downward optical signals to the second port and for outputting multiplexed upward optical signals to the first port, a second circulator including a first to a third port for outputting multiplexed upward optical signals to the second port and for outputting multiplexed downward optical signals to the first port, a first optical coupler connected to the third port of the first circulator and the second port of the second circulator for outputting the downward light to the third port of the first circulator, and a second optical coupler connected to the second port of the first circulator and the third port of the second circulator for outputting the upward light to the third port of the second circulator.

摘要翻译： 宽带光模块包括用于产生向下的光的向下宽带光源，用于产生向上光的向上宽带光源，包括第一至第三端口的第一循环器，用于将多路复用的下行光信号输出到第二端口并用于输出多路复用 光信号到第一端口，第二循环器，包括第一至第三端口，用于将多路复用的上行光信号输出到第二端口，并将多路复用的下行光信号输出到第一端口;第一光耦合器，连接到第一端口的第三端口 第一循环器和第二循环器的第二端口，用于将向下的光输出到第一循环器的第三端口;以及第二光耦合器，连接到第一循环器的第二端口和第二循环器的第三端口，用于输出向上 光到第二个循环器的第三个端口。

公开(公告)号：US20060018667A1

公开(公告)日：2006-01-26

申请号：US11005428

申请日：2004-12-06

申请人： Han-Lim Lee ,  Hoon Kim ,  Jae-Hoon Lee ,  Yun-Je Oh ,  Seong-Taek Hwang

发明人： Han-Lim Lee ,  Hoon Kim ,  Jae-Hoon Lee ,  Yun-Je Oh ,  Seong-Taek Hwang

IPC分类号： H04B10/04 ,  H04B10/12

CPC分类号： H04B10/505 ,  H04B10/5055 ,  H04B10/5167

摘要： An optical transmission apparatus using duobinary modulation adapted to an optical communication system using dense wavelength division multiplexing (DWDM) is disclosed. The duo-binary optical transmission apparatus includes an electro-absorption modulated laser (EML) for performing a light intensity modulation operation based on an electrical data signal and producing a modulated optical signal, the EML having a light source for outputting carriers and a modulator for performing the light intensity modulation operation, a precoder for inputting an inverted signal of the electrical data signal and encoding it to an encoded signal, and a modulator for performing a phase modulation of the optical signal modulated by the EML and outputting a duo-binary optical signal, according to the encoded signal.

摘要翻译： 公开了一种使用二进制调制的光传输装置，其适用于使用密集波分复用（DWDM）的光通信系统。 双二进制光传输装置包括：电吸收调制激光器（EML），用于基于电数据信号执行光强度调制操作并产生调制光信号，所述EML具有用于输出载波的光源和用于 执行光强调制操作，用于输入电数据信号的反相信号并将其编码为编码信号的预编码器，以及用于对由EML调制的光信号进行相位调制的调制器，并输出二进制二进制光 信号，根据编码信号。