Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Fabrication and Characterization of Wavelength Conversion Device with Periodically Poled Ridge-type Waveguide in MgO:LiNbO3

주기적으로 분극 반전된 MgO:LiNbO3를 이용한 리지형 광도파로 파장가변 소자 제작 및 특성

  • Lee, H.M. (Nano Bio-Photonics Team, Korea Electronics Technology Institute) ;
  • Yang, W.S. (Nano Bio-Photonics Team, Korea Electronics Technology Institute) ;
  • Kim, W.K. (Nano Bio-Photonics Team, Korea Electronics Technology Institute) ;
  • Lee, H.Y. (Nano Bio-Photonics Team, Korea Electronics Technology Institute) ;
  • Jeong, W.J. (School of Electrical and Computer Engineering, University of Seoul) ;
  • Kwon, S.W. (Department of Advanced Material Engineering, Sungkyunkwan University) ;
  • Koo, K.H. (Commax Co., Ltd.) ;
  • Song, M.G. (Commax Co., Ltd.)
  • 이형만 (전자부품연구원 나노바이오포토닉스팀) ;
  • 양우석 (전자부품연구원 나노바이오포토닉스팀) ;
  • 김우경 (전자부품연구원 나노바이오포토닉스팀) ;
  • 이한영 (전자부품연구원 나노바이오포토닉스팀) ;
  • 정우진 (서울시립대학교 전자전기컴퓨터공학부) ;
  • 권순우 (성균관대학교 신소재공학과) ;
  • 구경환 ((주)코맥스) ;
  • 송명근 ((주)코맥스)
  • Published : 2008.06.30
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Abstract

Wavelength converting devices with a ridge-type waveguide in periodically poled $MgO:LiNbO_3$ are made and characterized. The experimental results are compared with theoretical analysis on the effects of waveguide dimension and duty ratio of the periodically poled structure. To show the relationship of the conversion efficiency to those factors, a new measurement system is configured. That experimental results show that the center wavelength, normalized conversion efficiency and full width half maximum of the conversion efficiency curve are 1067.45 nm, 90.7%/$Wcm^2$ and 0.17 nm, respectively. Also, the estimated results of the duty period and full width half maximum of the conversion efficiency from theoretical calculations agreed well with experimental results with the errors of 0.016 ${\mu}m$ and 0.01 nm.

MgO가 첨가된 z-cut $LiNbO_3$를 이용하여 주기적으로 분극반전된 리지광도파로(Ridge-type Waveguide)를 제작하였으며 이를 적용하여 녹색광원 소자를 구현시 리지광도파로 높이 변화량과 분극반전주기비 변화량에 따른 이론적 결과와 실험적 결과를 비교 분석하였다. 이러한 비교분석을 위해 새로운 측정시스템을 구성하였으며, 이를 적용한 소자 측정 결과 중심파장은 1067.45 nm, 파장변환효율은 90.7%/$Wcm^2$ 및 파장변환효율곡선의 반치폭은 0.17 nm임을 확인하였다. 또한, 실험값과 이론값과의 비교결과 분극반전주기와 파장변환효율곡선의 반치폭 계산 오차는 각각 0.016 ${\mu}m$와 0.01 nm로 이론값이 실험값을 잘 예측함을 확인하였다.

Keywords

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