Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Nonlinear characteristics of photodetectors for optical fiber power measurements

광섬유 출력 측정용 광검출기의 비선형성 평가 연구

  • 이덕희 (공주대학교 응용물리학과) ;
  • 류지욱 (공주대학교 응용물리학) ;
  • 서정철 (한국표준과학연구원 정보통신표준센터)
  • Published : 2004.08.01
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Abstract

We have composed an experimental system using the superposition method to measure the nonlinearity of photodetectors for optical fiber power measurements. Also we have measured the nonlinearity of a high power detector and of a low power detector. The two detectors have shown good linearity within 0.01% and 0.02%, respectively, in the 50 ㏈ dynamic range. These detectors are used as reference detectors in optical fiber characteristics measurements.

광통신 출력 측정용 광검출기의 비선형성 특성을 측정하기 위하여 광합산 방법을 이용한 비선형성 측정 장치를 구성하였다. KRISS 출력 소급성을 갖는 고출력용 광검출기와 저출력용 광검출기의 비선형성을 측정하였는데, 50 ㏈의 작동영역에서 각 검출기의 비선형성은 0.01% 및 0.02% 이내로 측정되었다. 이 광검출기들은 선형성이 우수하므로 광섬유 광특성 측정 분야에서 KRISS 표준기로 사용되고 있다.

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References

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