한국광학회지 (Korean Journal of Optics and Photonics)

  • 제13권5호
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  • Pages.408-413
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  • 2002
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  • 1225-6285(pISSN)
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  • 2287-321X(eISSN)
한국광학회 (Optical Society of Korea)
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FLC SLM을 이용한 편광의존형 2×2 광스위치

Polarization dependent 2×2 optical switch using ferroelectric liquid crystal (FLC) Spatial Light Modulator(SLM)

  • 김인태 (청주대학교 정보기술공학부 레이저광정보공학) ;
  • 유연석 (청주대학교 정보기술공학부 레이저광정보공학)
  • 발행 : 2002.10.01
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초록

We demonstrated a polarization dependent type 2$\times$2 optical switch, using a binary reflection type SLM. Reflection type FLC was used as a half wave retardation plate. Two inputs were controlled by each SLM for the desired output direction. In conclusion, in the "1" state the average optical loss was 6.6 ㏈, and in the "0" state the average optical loss was 14.6 ㏈, and measured the switching speed as 75 $mutextrm{s}$. By using this method, a polarization dependent type 2$\times$2 optical switch can be demonstrated and the possibility of a 4-port WDM optical switch also verified.

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참고문헌

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