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    • 1. 发明申请
    • WAVELENGTH-DIVISION MULTIPLEXING OPTICAL COMMUNICATION SYSTEM AND METHOD FOR MEASURING OPTICAL PERFORMANCE OF AN OUTPUT SIGNAL FOR THE SYSTEM
    • 波长多路复用光通信系统及测量系统输出信号光学性能的方法
    • US20140079401A1
    • 2014-03-20
    • US14118922
    • 2012-05-25
    • Han-Hyub LeeJie-Hyun LeeEon-Sang KimSang-Soo Lee
    • Han-Hyub LeeJie-Hyun LeeEon-Sang KimSang-Soo Lee
    • H04B10/079H04J14/02
    • H04J14/0242H04B10/0795H04B10/2587H04J14/02H04J2014/0253
    • A wavelength-division multiplexing optical communication system and a method for measuring optical performance of an output signal for the system. The optical communication system includes: a service-provider device; a local node; and a plurality of subscriber devices. The service-provider device includes: a plurality of first optical transceivers; a first optical multiplexer/demultiplexer (OD/OM) connected to the plurality of first optical transceivers; and a seed-light source providing seed light. Each subscriber device includes a second optical transceiver. The local node connects the service-provider device and the plurality of subscriber devices to each other using a DWDM link comprising: a second multiplexer/demultiplexer (OD/OM); and a single-mode optical fiber for transmission. Here, the optical intensity of an output signal of the second optical transceiver is determined by compensating for the value of the loss caused when the output signal passes through the second OD/OM of the local node.
    • 一种波分复用光通信系统和用于测量该系统的输出信号的光学性能的方法。 光通信系统包括:服务提供者设备; 一个本地节点; 和多个订户设备。 服务提供者设备包括:多个第一光收发器; 连接到所述多个第一光收发器的第一光复用器/解复用器(OD / OM); 和提供种子光的种子光源。 每个用户设备包括第二光收发器。 本地节点使用DWDM链路将服务提供商设备和多个用户设备彼此连接,包括:第二多路复用器/解复用器(OD / OM); 和用于传输的单模光纤。 这里,通过补偿当输出信号通过本地节点的第二OD / OM时引起的损耗的值来确定第二光收发器的输出信号的光强度。
    • 6. 发明授权
    • Optical transmission line monitoring system using a gain clamped optical amplifier
    • 光传输线路监控系统采用增益钳位光放大器
    • US07440695B2
    • 2008-10-21
    • US10968308
    • 2004-10-18
    • Han Hyub LeeDonghan LeeHee Sang ChungKwangjoon Kim
    • Han Hyub LeeDonghan LeeHee Sang ChungKwangjoon Kim
    • H04B10/08
    • H04B10/071G01M11/3145
    • There are provided a method and system for monitoring an optical transmission line. The system for monitoring the optical transmission line includes: an OTDR (optical time-domain reflectometer) transmitting a monitoring light to an optical transmission line, measuring a reflected light or backscattered light to monitor the optical transmission line; an optical amplification unit amplifying the monitoring light transmitted on the optical transmission line by using a gain clamped optical amplifier; and a filter unit removing a component having a wavelength outside a wavelength band of the monitoring light from a backward ASE (amplified spontaneous emission) generated by the optical amplification unit. Accordingly, it is possible to extend an optical transmission line monitoring distance of the OTDR. As a result, it is possible to prevent deterioration of the performance of the OTDR because of the backward ASE.
    • 提供了一种用于监测光传输线的方法和系统。 用于监测光传输线路的系统包括:将光监测光传输到光传输线的OTDR(光时域反射计),测量反射光或反向散射光以监测光传输线; 光放大单元,通过使用增益钳位光放大器来放大在光传输线上传输的监视光; 以及滤光器单元,从由光放大单元产生的反向ASE(放大的自发发射)去除具有监测光的波长带外的波长的分量。 因此,可以延长OTDR的光传输线监视距离。 结果,可以防止由于向后的ASE而导致OTDR的性能的恶化。