Servo control for shift-multiplexed holographic data storage by using a dome-type glass

돔 유리를 이용한 위치이동 다중화 홀로그램 정보저장장치용 서보 컨트롤

  • 김성필 (한양대학교 물리학과 마이크로 광학 국가지정연구실) ;
  • 송석호 (한양대학교 물리학과 마이크로 광학 국가지정연구실) ;
  • 오차환 (한양대학교 물리학과 마이크로 광학 국가지정연구실) ;
  • 김필수 (한양대학교 물리학과 마이크로 광학 국가지정연구실) ;
  • 김지덕 (삼성전자(주) 종합기술원) ;
  • 이홍석 (삼성전자(주) 종합기술원)
  • Published : 2004.02.01


We propose a servo control method using a dome-type glass in shift-multiplexed holographic data storage. We frist store live 2-D data by shift-multiplexing in a holographic disk with 5% variation in their. diffraction efficiencies. During read-out of the stored data, the servo control using the dome glass correctly compensates mechanical errors of the disk; the error of $\pm$0.2$^{\circ}$and run-out error of $\pm$50 ${\mu}{\textrm}{m}$. Use of the dome-type glass in servo control makes a pickup module more compact in size and easier to control than the previous method using parallel glass plate [Sungphil Kim, et al., Hankook Kwanghak Hoeji, Vol. 14, No. 1, pp.58-64, 2003].


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