Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Photorefractive two-wave coupling properties of time-modulated optical signal in Cu-KNSBN crystal and its applications

Cu-KNSBN 결정에서 시변조된 광신호의 광굴절 2광파결합 특성 및 응용

  • 소지영 (순천대학교 공과대학 전기제어공학과) ;
  • 이권연 (순천대학교 공과대학 전자공학과)
  • Published : 1998.04.01
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Abstract

The energy transfer between two incident beams in a photorefractive Cu-doped(0.04 wt. %) ${(K_{0.5}Na_{0.5})}_{0.2}{(Sr_{0.61}Ba_{0.39})}_{0.9}Nb_2O_6$ crystal is investigated at 632.8 nm laser wavelength. In addition, the coherent two-wave coupling properties of a photoinduced refractive-index grating in the presence of amplitude modulation on the signal beam or reference beam are also experimentally investigated. Some preliminary exprimental results are presented for use as a dynamic photorefracitive combiners and pulse shaping elements in coherent optical communication systems and in optical signal processing.

Cu 도핑된(0.04 wt.%) 광굴절 (K/sub 0.5/Na/sub 0.5/)/sub 0.2/(Sr/sub 0.61/Ba/sub 0.39/)/sub 0.9/Nb/sub 2/O/sub 6/ 결정에서 두 빔간의 에너지 교환특성을 632.8 nm He-Ne 레이저 파장에서 해석하고 측정하였다. 또한 신호빔 혹은 기준빔이 고주파에서 진폭 변조될 때 광유기된 굴절율 부피 격자의 코히어런트한 2광파 결합 특성을 해석하고 실험하였으며, 코히어런트 광통신 시스템 및 광신호처리 분야에서 동적 광굴절 결합기및 펄스 shaping 소자로 활용하기 위한 예비 실험 결과를 제시했다.

Keywords

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