Journal of the Institute of Electronics Engineers of Korea TC (대한전자공학회논문지TC)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Optical Performance Monitoring for WDM Optical Transmission Systems using Arrayed Waveguide Grating

배열 도파로 격자를 이용한 WDM광 전송시스템의 성능감시

  • Youn, Ji-Wook (Electronics and Telecommunications Research Institute) ;
  • Lee, Sung-Un (Electronics and Telecommunications Research Institute) ;
  • Kim, Kwang-Joon (Electronics and Telecommunications Research Institute) ;
  • Lee, Jong-Hyun (Electronics and Telecommunications Research Institute)
  • Published : 2001.02.25
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Abstract

We propose an optical performance monitoring method for WDM optical transmission systems. By assigning a pair of AWG ports to each optical signal channel. the optical power, optical signal-to-noise ratio (OSNIO, and wavelength of all the signal channels are observed simultaneously. The output power ratio of the AWG port pair depended on the wavelength variation of the channel with sensitivity of 1dB/0.026nm. The OSNH results were deviated no more than 0.7dB from the results measured by optical signal analyzer (OSA).

본 논문에서는 배열 도파로, 격자(Arrayed Waveguide Grating: AWG)를 이용하여 파장분할 다중화(Wavelength-Division Multiplexing: WDM)광 신호의 채널별 파장과 광학적 신호대 잡음비(Optical Signal-to-Noise Ratio: OSNR)를 실시간으로 측정하였다. 입력신호의 채널별 파장변화에 따른 AWG의 인접한 두 출력포트의 출력 값의 비율변화는 ${\sim}$1dB/0.026nm로 측정되었으며 채널별 OSNR의 측정에 있어서는 0.7dB이내의 오차를 가진다.

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References

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