대한전자공학회논문지SD (Journal of the Institute of Electronics Engineers of Korea SD)

대한전자공학회 (The Institute of Electronics and Information Engineers)
권호 표지

단일모드 광섬유와 금속클래드 평면도파로 사이의 광 결합을 이용한 편광기 제작

Fabrication of an Optical Polarizer Using Optical Coupling Between Single Mode Fiber and Metal-Clad Planar Waveguide

  • 김광택 (호남대학교 전기전자컴퓨터공학부) ;
  • 송재원 (경북대학교 전자전기공학부) ;
  • 정웅규 (경북대학교 센서공학과) ;
  • 강신원 (경북대학교 센서공학과)
  • 발행 : 2000.04.01
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초록

광섬유-평면도파로 결합기의 편광선택성을 이용한 새로운 구조의 광섬유형 편광기를 설계 및 제작하였다. 금속클래드-평면도파로의 높은 복굴절을 이용함으로서 동작 파장범위를 증가시킬 수 있었다. 평면도파로의 코어층으로 폴리머를, 클래딩으로 금(Au)을 각각 사용하였다. 실험결과는 평면도파로의 두께를 조절하여 TE편광 혹은 TM 편광이 만들어 질 수 있음을 보인다. 16㏈ 이상의 편광소멸비를 만족하는 파장범위는 130nm 이상으로 나타났고 삽입손실은 0.5㏈ 정도였다.

Based on the polarization selectivity of fiber-to-planar waveguide coupler, a novel fiber optic polarizer has been designed and fabricated. The large structural birefringence of a metal-clad planar waveguide enables the polarizer to have wide operating wavelength range. The polymer and gold were used for the guiding layer and cladding layer of the planar waveguide, respectively. The experimental results showed that either TE or TM polarized lightwave could be created by adjusting the thickness of planar waveguide. Operating wavelegth range satisfying more than 16㏈ polarization extinction ratio was 130nm. The average insertion loss of fabricated devices was order of 0.5㏈.

키워드

참고문헌

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