근접장 광기록 헤드의 광학적 성능 평가와 정렬 오차에 대한 간섭 무늬 패턴 분석에 대한 연구A Study on the Evaluation of the Optical Head of a Near-field Optical Recording System and Interference Pattern Analysis

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Optical performance evaluation results and an interferance fringe pattern analysis of alignment errors for an optical head of a near field recording(NFR) system are presented. The focusing unit is an optical head of a NFR system and is composed of a solid immersion lens and an objective lens. Generally, the size of the focusing unit is smaller than that of the conventional optical recording head. Hence there are difficulties to assemble the small focusing unit precisely. We composed an evaluation system with an interferometer and evaluated some focusing unit samples aligned and assembled by manual and present the obtained results. Using the conventional optical tool, CodeV, a tolerance analysis of the alignment error between the SIL and the objective lens and an interference pattern analysis for the assembly error are executed. Then, through an analysis of the simulation results, the conceptual auto-alignment methodology using a neural network approach is considered.
Publisher
한국정밀공학회
Issue Date
2005-05
Keywords

간접 패턴 분석; 근접장 기록; 광픽업 헤드 조립; 자동 정렬

Citation

Journal of the Korean Society of Precision Engineering, Vol.22, No.5, pp.80-86

URI
http://hdl.handle.net/10203/23560
Appears in Collection
ME-Journal Papers(저널논문)

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