파장 분할 다중화 시스템의 수신감도 개선

Receive Sensitivity Improvement of Wavelength Division Multiplexing System

  • 김선엽 (남서울대학교 전자정보통신공학부) ;
  • 박형근 (남서울대학교 전자정보통신공학부)
  • 발행 : 2006.03.01

초록

본 논문에서는 스펙트럼 분할된 WDM시스템의 성능해석시, 광전치 증폭기를 사용하여 일반적인 핀(PIN) 다이오드를 채용한 수신기를 통해 얻을 수 있는 수신감도를 개선하는 방법에 대해 해석하였다. 또한 온-오프키잉(OOK: On Off Keying)과 주파수 천이키잉(FSK: Frequency Shift Keying) 전송을 이용하여 표준에러 확률을 유지하기 위해 필요로 하는 비트당 광자의 수를 계산한 후 수신기에서 광신호와 전기신호의 다양한 대역폭 비가 변화하는 경우에 대하여 위의 값을 다시 도출함으로써 수신감도를 해석하였다.

In this study, we analysis an optical receivers using the optical preamplifier in a spectrum-sliced WDM systems. The average numbers of photons/bit, for an $10^{-9}$ error probability, counts using the OOK and FSK transmission. As a result, the theoretical sensitivity for PIN receiver and optical preamplifier receiver are approximately $9.2\times10^4\;and\;7.2\times10^2$ in the m=20, respectively. Also, the average numbers of photons/bit, for and given error probability, theoretical receiver sensitivity for Gaussian method and k-square method are approximately $9\times10^2\;and\;2.16\times10^2$ in the m=40, respectively. And the average numbers of photons/bit, for an given error probability, theoretical receiver sensitivity, OOK and FSK transmission are approximately $1.9\times10^2\;and\;3.1\times10^2$ in the m=20, respectively.

키워드

참고문헌

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