公开(公告)号：US09112600B2

公开(公告)日：2015-08-18

申请号：US13866647

申请日：2013-04-19

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jie-Hyun Lee ,  Seung-II Myong ,  Han-Hyub Lee ,  Sang-Soo Lee

IPC: H04B10/00 ,  H04B10/07 ,  H04B10/079 ,  H04J14/02

CPC classification number: H04B10/07 ,  H04B10/07957 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0256 ,  H04J14/0257 ,  H04J14/0258

Abstract: A wavelength tuning time measurement apparatus and method for a multi-wavelength passive optical network (MW PON) are provided. The wavelength tuning time measurement apparatus for measuring a wavelength tuning time of a wavelength-variable light source included in the MW PON system includes an optical filter configured to pass only light of a certain wavelength bandwidth and a photo detector configured to sense light passing through the optical filter. The wavelength tuning time is a time taken from a time when a wavelength change signal is transferred to the wavelength-variable light source, to a time when light starts to be successively sensed by the photo detector.

Abstract translation: 提供了一种用于多波长无源光网络（MW PON）的波长调谐时间测量装置和方法。 用于测量MW PON系统中包括的波长可变光源的波长调谐时间的波长调谐时间测量装置包括被配置为仅通过一定波长带宽的光的光学滤波器和被配置为感测通过 滤光片 波长调谐时间是从波长变化信号传输到波长可变光源的时间到光开始被光电检测器连续感测的时间。

公开(公告)号：US09197319B2

公开(公告)日：2015-11-24

申请号：US14054209

申请日：2013-10-15

Applicant: Electronics and Telecommunications Research Institute

Inventor： Won-Kyoung Lee ,  Seung-II Myong

IPC: H04B10/08 ,  H04B10/071

CPC classification number: H04B10/071

Abstract: There are provided a device for monitoring an optical link fault and a method thereof. According to an embodiment of the invention, the device for monitoring an optical link fault and the method thereof apply an optical link fault monitoring signal to an optical link and precisely identify a type of the fault using waveforms of a reflected signal returned from the optical link or a wavelength dependence of reflected signal intensity.

Abstract translation: 提供了一种用于监视光链路故障的装置及其方法。 根据本发明的实施例，用于监视光链路故障的装置及其方法将光链路故障监视信号应用于光链路，并使用从光链路返回的反射信号的波形来精确地识别故障类型 或反射信号强度的波长依赖性。