Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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A Study on Ti:LiNbO3 Integrated Optical Wavelength Tunable Polarization Mode Controllers

Ti:LiNbO3 집적광학형 파장가변 편광모드 조절기에 관한 연구

  • Moon, Je-Young (Dept. of Electronic & Computer Engineering, Graduate School, Hong-Ik University) ;
  • Jung, Hong-Sik (Dept. of Electronic & Computer Engineering, Graduate School, Hong-Ik University)
  • 문제영 (홍익대학교, 대학원, 전자전산공학과) ;
  • 정홍식 (홍익대학교, 대학원, 전자전산공학과)
  • Published : 2005.08.01
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Abstract

We designed and fabricated integrated-optic tunable polarization controllers based on $LiNbO_3$ with the Ti-indiffused waveguide along the y-axis utilizing the electro-optic effect. The device consists of $TE↔TM$ mode converters and TE/TM phase shifters. We analyzed the operation principles of each device utilizing transfer matrices based on a Jones matrix and simulated shifting of the center wavelength by inducing voltage. We confirmed experimentally that the fabricated devices control the tunability of the center wavelength and the input SOP.

[ $Ti:LiNbO_3$ ] 채널 광도파로와 전기광학효과를 이용하여 설계된 집적광학 파장가변 편광모드 조절기를 설계 및 제작하고, 동작특성을 측정하였다. 소자는 $TE↔TM$ 모드변환기와 TE./TM 위상변환기로 구성되었으며, Jones 매트릭스를 이용하여 각각의 전달 매트릭스를 유도하였다. 위상변환기에 의한 파장 변환율을 전산 모사하였으며, 제작된 소자의 동작 특성들을 확인하였다. 폴래리미터와 Poincare 구 좌표계를 이용하여 편광 조절기의 동작 상태를 체계적으로 측정하였다.

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References

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