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    • 92. 发明授权
    • Wavelength division multiplexed passive optical network system
    • 波分复用无源光网络系统
    • US07295778B2
    • 2007-11-13
    • US10713393
    • 2003-11-14
    • Jea-Hyuck LeeSeong-Taek HwangYun-Je OhDae-Kwang Jung
    • Jea-Hyuck LeeSeong-Taek HwangYun-Je OhDae-Kwang Jung
    • H04J14/00
    • H04J14/0282H04B10/2503H04B10/40H04J14/02H04J14/0226H04J14/0246H04J14/025H04Q11/0067H04Q2011/0016
    • Disclosed is a wavelength division multiplexed passive optical network (WDM PON) system including a central office, a remote Node, and an optical fiber coupled between the central office and the remote node, wherein the central office includes an optical power splitter coupled to the optical fiber, wherein the optical power splitter (1) divides an upstream optical signal from the optical fiber into a plurality of upstream optical signals having substantially similar power and (2) outputs downstream optical signals to the optical fiber, and a plurality of optical transceiver modules to (1) receive the plurality of upstream optical signals, and (2) output the downstream optical signals to the optical power splitter, and wherein at least one of the optical transceiver modules having an optical transmitter including a semiconductor optical amplifier and a reflection-type optical fiber grating located at a predetermined distance from the semiconductor optical amplifier, the optical transmitter transmitting light of a pre-set wavelength resonating between the SOA and reflection-type optical fiber grating; and wherein at least one of the optical transceiver modules having an optical receiver having an optical fiber grating for transmitting light of a predetermined wavelength and an optical detector for detecting light passing through the optical fiber grating.
    • 公开了一种波分复用无源光网络(WDM PON)系统,包括中心局,远程节点和耦合在中心局与远程节点之间的光纤,其中中心局包括耦合到光学器件的光功率分配器 光纤,其中所述光功率分配器(1)将来自所述光纤的上行光信号划分成具有基本相似功率的多个上游光信号,以及(2)向所述光纤输出下行光信号,以及多个光收发模块 (1)接收多个上游光信号,以及(2)将下行光信号输出到光功率分配器,并且其中至少一个光收发模块具有光发射机,该光发射机包括半导体光放大器和反射 - 位于与半导体光放大器预定距离的光纤光栅,光发射 传输在SOA和反射型光纤光栅之间谐振的预设波长的光; 并且其中所述光收发器模块中的至少一个具有光接收器,所述光接收器具有用于透射预定波长的光的光纤光栅和用于检测通过所述光纤光栅的光的光学检测器。
    • 93. 发明申请
    • Single wavelength Bi-directional RoF link apparatus for signal transmission in TDD wireless system
    • 单波长双向RoF链路设备,用于TDD无线系统中的信号传输
    • US20070258432A1
    • 2007-11-08
    • US11642260
    • 2006-12-20
    • Jae-Hoon LeeByung-Jik KimSeong-Taek HwangSang-Ho Kim
    • Jae-Hoon LeeByung-Jik KimSeong-Taek HwangSang-Ho Kim
    • H04B7/212
    • H04B10/25758H04B7/2606
    • A single wavelength bi-directional RoF link apparatus for signal transmission in a TDD wireless system includes a main donor for receiving an RF signal of downstream data from an upper layer, electrooptic converting the received RF signal to an optical signal, and transmitting the converted optical signal via an optical fiber in response to a TDD switching signal received from the upper layer, or receiving an optical signal of upstream data via the optical fiber, opto-electric converting the received optical signal to an RF signal in response to the TDD switching signal received from the upper layer, and transmitting the converted optical signal to the main donor; and a remote for receiving the optical signal of the downstream data via the optical fiber from the main donor, opto-electric converting the received optical signal to an RF signal, and emitting the converted RF signal to a terminal via an antenna in response to a TDD switching signal generated by a switch timing signal generation circuit, or receiving an RF signal of upstream data from the terminal, electro-optic converting the received RF signal to an optical signal in response to the TDD switching signal generated by the switch timing signal generation circuit, and transmitting the converted optical signal to the main donor via the optical fiber.
    • 在TDD无线系统中用于信号传输的单波长双向RoF链路装置包括:主要供体,用于从上层接收下行数据的RF信号,将所接收的RF信号电光转换成光信号,并将转换后的光 响应于从上层接收的TDD切换信号,或经由光纤接收上行数据的光信号,经由光纤发送信号,响应于TDD切换信号将接收到的光信号光电转换为RF信号 从上层接收,并将转换的光信号发送到主供体; 以及遥控器,用于经由来自主施体的光纤接收下行数据的光信号,将所接收的光信号光电转换成RF信号,并响应于一个天线经由天线将转换的RF信号发射到终端 TDD切换信号,或者从终端接收上行数据的RF信号,根据切换定时信号生成产生的TDD切换信号将接收的RF信号电光转换为光信号 并且经由光纤将转换后的光信号发送到主供体。
    • 94. 发明授权
    • Duo-binary encoder and optical duo-binary transmission apparatus using the same
    • 双二进制编码器和二进制二进制传输装置
    • US07289048B2
    • 2007-10-30
    • US10806548
    • 2004-03-23
    • Sung-Kee KimHan-Lim LeeSeong-Taek Hwang
    • Sung-Kee KimHan-Lim LeeSeong-Taek Hwang
    • H03M1/00
    • H04B10/505H04B10/5055H04B10/5167
    • A duo-binary encoder performs a parallel processing and an optical duo-binary transmission apparatus using the encoder to enhance transmission capability. The duo-binary encoder has a judgment unit for judging whether an odd number or even number of ‘0’s exists in data input signals of N channels, a toggle unit for toggling an output signal of the judgment unit when a number of ‘0’s is even, an intermediate signal generation unit for determining whether phases of other channels are shifted or not, according to an data input signal on the basis of a predetermined channel of the N channels. A phase division unit divides data into a first data group having non-shifted phases and a second group of data that require a phase shift, according to an output signal of the intermediate signal generation unit and the data input signal. The divided first and second data groups are then output.
    • 二进制编码器使用编码器执行并行处理和光二进制传输装置,以增强传输能力。 二进制编码器具有判断单元,用于判断N个通道的数据输入信号中是否存在奇数或偶数的“0”,当“0”为偶数时,用于切换判断单元的输出信号的触发单元 根据N个信道的预定信道,根据数据输入信号,确定是否移位了其他信道的相位的中间信号生成部。 相位分割单元根据中间信号产生单元的输出信号和数据输入信号将数据划分成具有非移相的第一数据组和需要相移的第二组数据。 然后输出分割的第一和第二数据组。
    • 95. 发明授权
    • Wideband optical module and PON using the same
    • 宽带光模块和PON使用相同
    • US07280719B2
    • 2007-10-09
    • US11143238
    • 2005-06-02
    • Jae-Hoon LeeSung-Bum ParkYun-Je OhSeong-Taek HwangHyun-Soo Kim
    • Jae-Hoon LeeSung-Bum ParkYun-Je OhSeong-Taek HwangHyun-Soo Kim
    • G02B6/28
    • H04J14/02H04B10/296H04B10/2972
    • 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.
    • 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。
    • 97. 发明授权
    • BPSR optical transmission node
    • BPSR光传输节点
    • US07266300B2
    • 2007-09-04
    • US10458171
    • 2003-06-10
    • Sung-Kee KimYoung-Hun JooSeong-Taek Hwang
    • Sung-Kee KimYoung-Hun JooSeong-Taek Hwang
    • H04J14/02
    • H04J14/0216H04B10/2971H04J14/02H04J14/0208H04J14/0227
    • A bi-directional path switched ring optical transmission node has simple configuration which reduces the influence of a wave reflected by an obstacle on optical line.The BPSR optical transmission node connects to a first optical line through which an odd channel signal and an even channel signal are transmitted to and from the BPSR optical transmission node in direction opposite to each other. The BPSR optical transmission node further connects to a second optical line through which the odd channel signal and the even channel signal are transmitted from and to the BPSR optical transmission node in direction opposite to each other. The BPSR optical transmission n-ode includes a node section for directing the odd channel signal and the even channel signal, dropping/adding a desired channel from/to the odd channel signal and the even channel signal,and then allowing each of the odd channel signal and the even channel signal to proceed in a direction traveled by that channel signal upon arriving at the BPSR optical transmission node; and filtering section coupled between the node section and respective optical lines, the filtering section allowing only one of the odd channel signal and the even channel signal to pass without attenuating the signal.
    • 双向路径交换环形光传输节点具有简单的配置,减少了由障碍物反射的波对光线路的影响.BPSR光传输节点连接到第一光线路,奇数信道信号和偶信道信号 在彼此相反的方向上被传送到BPSR光传输节点。 BPSR光传输节点进一步连接到第二光线路,通过该第二光线路,奇数信道信号和偶信道信号以彼此相反的方向从BPSR光传输节点传送到BPSR光传输节点。 BPSR光传输n-ode包括用于引导奇信道信号和偶信道信号的节点部分,从奇信道信号和偶信道信号中丢弃/添加所需信道,然后允许奇信道 信号和偶数信道信号在到达BPSR光传输节点时沿着该信道信号行进的方向进行; 以及耦合在所述节点部分和各个光线路之间的滤波部分,所述滤波部分仅允许奇数信道信号和偶数信道信号中的一个通过而不衰减所述信号。
    • 98. 发明授权
    • Passive optical network using loop back of multi-wavelength light generated at central office
    • 无源光网络使用中央办公室产生的多波长光环路
    • US07254344B2
    • 2007-08-07
    • US10427284
    • 2003-05-01
    • Jong-Kwon KimSeong-Taek HwangYun-Je Oh
    • Jong-Kwon KimSeong-Taek HwangYun-Je Oh
    • H04B10/00H04J14/00
    • H04B10/2587H04J14/0221H04J14/0226H04J14/0246H04J14/025H04J2014/0253H04Q11/0067H04Q2011/0016
    • A passive optical network includes a central office and a subscriber-side apparatus connected with the central office through an optical fiber link. The subscriber-side apparatus performs communication with the central office based on wavelength-division-multiplexed optical signals. The central office has a routing section, provided with first to fourth multiplexing ports, for demultiplexing multi-wavelength light inputted from the fourth multiplexing port into a plurality of channels. Each of the demultiplexed channels is amplified and multiplexed for output through the first multiplexing port. Optical signals inputted through the third multiplexing port are demultiplexed and outputted upstream. The routing section also multiplexes channels for downstream optical signals, outputting the multiplexed channels through the second port. A splitting section, provided with first to third splitting ports and arranged on a loop optical waveguide connects the first and fourth multiplexing port with each other. The splitting section causes some of multi-wavelength light inputted into the first splitting port to be outputted through the second splitting port and causes the remainder of multi-wavelength light to be outputted through the third splitting port connected with the fourth multiplexing port. A circulator causes the multi-wavelength light inputted through the second splitting port to be transmitted to the subscriber-side apparatus and causes upstream optical signals received from the subscriber-side apparatus to be outputted to the third multiplexing port.
    • 无源光网络包括通过光纤链路与中心局连接的中心局和用户侧设备。 用户侧设备基于波分复用光信号与中心局进行通信。 中心局具有路由部分,设置有第一到第四复用端口,用于将从第四复用端口输入的多波长光解复用为多个信道。 每个解复用的信道被放大和多路复用以通过第一复用端口输出。 通过第三复用端口输入的光信号被解复用并在上游输出。 路由部分还复用用于下行光信号的信道,通过第二端口输出多路复用信道。 具有第一至第三分离端口并布置在环形光波导上的分离部分将第一和第四复用端口彼此连接。 分割部使通过第二分割口输出输入到第一分割端口的一部分多波长光,并且通过与第四复用端口连接的第三分离端口输出剩余的多波长光。 循环器使得通过第二分割端口输入的多波长光被发送到用户侧装置,并且使从用户侧装置接收到的上行光信号输出到第三复用端口。