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    • 2. 发明授权
    • Optical fiber for out-coupling optical signal and apparatus for detecting optical signal using the same optical fiber
    • 用于输出耦合光信号的光纤和使用相同光纤检测光信号的装置
    • US07526156B2
    • 2009-04-28
    • US11758051
    • 2007-06-05
    • Seihyoung LeeShin Young YoonHyun Seo Kang
    • Seihyoung LeeShin Young YoonHyun Seo Kang
    • G02B6/26
    • G02B6/4203G02B6/02085G02B6/02095G02B6/29323G02B6/4215
    • Provided are an optical fiber, which has an out-coupling characteristic of high coupling efficiency and is advantageous in terms of size reduction, and an optical signal detecting apparatus, which has a high coupling rate and high degree of integration, using the optical fiber. The optical signal out-coupling optical fiber includes: a core in which a tilted Bragg grating or a long period optical fiber grating is formed; and a cladding that surrounds the core and in which at least one V-groove that totally reflects optical signals is formed, wherein optical signals are out-coupled by using the grating and the V-groove. The optical signal detecting apparatus includes: an optical signal out-coupling optical fiber; and an optical signal receiving device monitoring or detecting optical signals emitted from the optical fiber. The optical signal out-coupling optical fiber has an in-line structure which does not require a complicated external structure, and thus can be made more compact and emit optical signals highly efficiently, and the optical signal detecting apparatus using the optical fiber can monitor or detect optical signals with a high degree of integration and high optical coupling efficiency.
    • 提供一种光纤,其具有高耦合效率的外耦合特性,并且在尺寸减小方面是有利的,以及使用光纤具有高耦合速率和高集成度的光信号检测装置。 光信号输出耦合光纤包括:形成倾斜布拉格光栅或长周期光纤光栅的芯; 以及围绕所述芯并且其中形成有完全反射光信号的至少一个V形槽的包层,其中光信号通过使用所述光栅和所述V形槽而外耦合。 光信号检测装置包括:光信号输出耦合光纤; 以及光信号接收装置,其监视或检测从光纤发射的光信号。 光信号输出耦合光纤具有不需要复杂的外部结构的线内结构,因此可以更紧凑并且高效地发射光信号,并且使用光纤的光信号检测装置可以监视或 以高集成度和高​​耦合效率检测光信号。
    • 4. 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。
    • 8. 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。