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    • 5. 发明申请
    • Optical diplexer module using mixed-signal multiplexer
    • 光双工器模块采用混合信号多路复用器
    • US20090148160A1
    • 2009-06-11
    • US12154455
    • 2008-05-23
    • Kwon-Seob LimHyun Seo Kang
    • Kwon-Seob LimHyun Seo Kang
    • H04B10/00H04J14/00
    • H04J14/0226H04B10/25751H04J14/0232H04J14/0247H04J14/0252H04J14/0282
    • An optical diplexer module includes: an optical diplexer module comprising: a multiplexing unit multiplexing RF signals and a wideband digital signal having a baseband bandwidth to output a single multiplexed signal; an E-O converter converting the multiplexed signal into an optical signal and externally outputting the optical signal; and an O-E converter converting an externally received optical signal into an electric signal and outputting the electric signal. Similarly to existing optical transceivers, the optical diplexer module can provide TPS and MPS services using only two optical wavelengths for upstream and downstream signals. Since no separate optical wavelength is additionally required, the optical diplexer module can allows the numbers of components and processes to be reduced. It may result in yield improvement and cost reduction. Also, since electric or optical crosstalk between modules can be reduced, its performance can be improved.
    • 光双工器模块包括:光双工器模块,包括:多路复用单元,复用RF信号和具有基带带宽的宽带数字信号,以输出单个多路复用信号; E-O转换器将多路复用信号转换为光信号并从外部输出光信号; 以及将外部接收的光信号转换为电信号并输出​​电信号的O-E转换器。 与现有的光收发器类似,光学双工器模块可以为上行和下行信号提供仅使用两个光波长的TPS和MPS服务。 由于不需要单独的光波长,所以光学双工器模块可以允许减少部件和工艺的数量。 这可能导致产量提高和成本降低。 此外,由于可以减少模块之间的电或光串扰,可以提高其性能。
    • 10. 发明授权
    • Apparatus for remotely determining fault of subscriber terminals and method thereof
    • 用于远程确定用户终端故障的装置及其方法
    • US07386234B2
    • 2008-06-10
    • US11098701
    • 2005-04-05
    • Byung Tak LeeMun Seob LeeHyun Seo KangJai Sang Koh
    • Byung Tak LeeMun Seob LeeHyun Seo KangJai Sang Koh
    • H04B10/08H04J14/00
    • H04B10/00H04B17/21
    • An apparatus for remotely determining a fault of subscriber terminals and a method thereof, and more specifically, an apparatus by which in a passive optical network (PON) system, a central office determines a remote fault of subscriber terminals, and a method thereof are provided. The apparatus for determining a remote fault of subscriber terminals includes: a frequency analysis unit recognizing a fault occurrence of a subscriber terminal from an upstream signal and analyzing the frequency spectrum of the upstream signal; and a fault determination unit selecting a specific frequency corresponding to the shape of the spectrum, determining a diagnosis signal corresponding to the specific frequency, transmitting a message requesting to upward transmit the diagnosis signal to each ONT, finding a peak frequency from the frequency spectrum of the diagnosis signal transmitted by the ONT, determining a fault of the subscriber terminal by comparing the peak frequency with the selected specific frequency.
    • 一种用于远程确定用户终端故障的装置及其方法,更具体地说,在无源光网络(PON)系统中,中心局确定用户终端的远程故障的装置及其方法 。 用于确定用户终端的远程故障的装置包括:频率分析单元,从上行信号识别用户终端的故障发生并分析上行信号的频谱; 以及故障判定单元,选择与所述频谱的形状对应的特定频率,确定与所述特定频率对应的诊断信号,向每个ONT发送请求向上发送所述诊断信号的消息,从所述ONT的频谱中求出峰值频率 由ONT发送的诊断信号,通过将峰值频率与所选择的特定频率进行比较来确定用户终端的故障。