Journal of the Korean Institute of Telematics and Electronics D (전자공학회논문지D)

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

Analysis of optical noise influence due to inhomogeneity of photorefractive grating in Fe-LiNbO$_{3}$ crystal

Fe-LiNbO$_{3}$ 결정에서 광굴절격자의 비균일성에 의한 광학적 잡음의 영향 분석

  • 안준원 (충북대학교 정보통신공학과) ;
  • 최연숙 (충북대학교 정보통신공학과) ;
  • 김남 (충북대학교 정보통신공학과) ;
  • 이권연 (순천대학교 전자공학과) ;
  • 강석열 (한국전자통신연구원 ATM 기술연구부)
  • Published : 1998.03.01
Download PDF
⟨ Previous Next ⟩

Abstract

In a LiNbO$_{3}$ crystal, optical noise is caused by the inhomogeneity of crystal inside if the excess energy is incident on the crystal. In this paper, we experiemnt the influence of optical noise when it is applied for beam diffraction and optical information storage. And it is proposed the energy threshold level which is not affected by optical noise in Fe-LiNbO$_{3}$ crystal(0.02Wt.% doped, 10mm*10mm*10mm). The optical noise of crystal weremeasured as a function of the incident beam intensity(10mw, 5mw, 1mw, 0.5mw), direction in incident(orthogonal, left rotation, right rotation) and wavelength(514.5nm, 632.8nm).

Keywords