한국광학회지 (Korean Journal of Optics and Photonics)

  • 제18권2호
  • /
  • Pages.105-110
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  • 2007
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  • 1225-6285(pISSN)
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  • 2287-321X(eISSN)
한국광학회 (Optical Society of Korea)
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FBG를 삽입한 사냑 루프 대역 통과 필터의 해석

Analysis of Sagnac Loop Band-pass Filter in Incorporating Fiber Bragg Gratings

  • 정은주 (부산대학교 나노과학기술대학 시스템공정공학과) ;
  • 정명영 (부산대학교 나노과학기술대학 시스템공정공학과) ;
  • 김창석 (부산대학교 나노과학기술대학 시스템공정공학과)
  • Jung, Eun-Joo (Department of Nanosystem and Nanoprocess Engineering, Pusan National University) ;
  • Jeong, Myung-Yung (Department of Nanosystem and Nanoprocess Engineering, Pusan National University) ;
  • Kim, Chang-Seok (Department of Nanosystem and Nanoprocess Engineering, Pusan National University)
  • 발행 : 2007.04.25
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초록

사냑 고리 광섬유 간섭계의 특성을 이용하여 FBG의 반사특성을 투과특성으로 전환하는 고효율의 파장 선택 필터를 제안하고 수식적으로 분석 및 구현하였다. 제안된 대역 투과 필터는 사냑 고리 간섭계 구조에 FBG를 삽입하여 구현하였다. 고효율의 가변형 파장 선택 필터는 편광조절기에 의해 FBG 브래그 파장영역이외의 영역은 사냑 효과로 광의 세기를 가변적으로 투과하도록 조절하였고, 브래그 파장영역에서는 마이켈슨 간섭효과로 20 dB 이상의 소멸비를 갖는 광 투과를 얻었다.

A tunable band-pass filter of fiber Bragg gratings incorporating the Sagnac loop interferometer configuration is presented. The proposed band-pass filter with extinction ratio 20 dB has practical advantages in terms of price and performance in comparison with the conventional band-pass filter using a circulator.

키워드

참고문헌

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