View in EDS

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

Saved in:
Bibliographic Details
Title: 근접장 광기록 헤드의 광학적 성능 평가와 정렬 오차에 대한 간섭 무늬 패턴 분석에 대한 연구 ; A Study on the Evaluation of the Optical Head of a Near-field Optical Recording System and Interference Pattern Analysis
Authors: Gweon, Dae Gab, Yoon, Hyoung Kil, Lee, Joon Hee, Jung, Jae Hwa, Oh, Hyoung Ryul
Publisher Information: 한국정밀공학회
Publication Year: 2005
Collection: Korea Advanced Institute of Science and Technology: KOASAS - KAIST Open Access Self-Archiving System
Subject Terms: 간접 패턴 분석, 근접장 기록, 광픽업 헤드 조립, 자동 정렬, interference pattern analysis, near-field recording, optical pick up head assembly, auto-alignment method
Description: 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.
Document Type: article in journal/newspaper
Language: Korean
Relation: http://hdl.handle.net/10203/23560
Availability: http://hdl.handle.net/10203/23560
Accession Number: edsbas.7EB278B4
Database: BASE
Description
Abstract: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.