Design of Single-Path Optical Pickup Head With Three Wavelengths Using Integrated Optical Unit

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/28056

Title:	Design of Single-Path Optical Pickup Head With Three Wavelengths Using Integrated Optical Unit
Authors:	Shih,HF;Lu,WC;Chang,JY
Contributors:	光電科學研究所
Keywords:	BLU-RAY DISC;COMPATIBLE OBJECTIVE LENS;2-WAVELENGTH LASER-DIODE;ELEMENT
Date:	2009
Issue Date:	2010-06-29 19:41:01 (UTC+8)
Publisher:	中央大學
Abstract:	For the purpose of backward compatibility to the CD and DVD specifications, the optical pickup head (OPH) design with multiple laser wavelengths and numerical apertures (NAs) is necessary for the Blu-ray Disc (BD) system. By utilizing the features of an integrated optical unit (IOU) and a holographic optical element (HOE), this study presents a novel three-wavelength BD OPH configuration with compactness in a single optical path. There are two OPH designs with the astigmatic and knife-edge focusing detection methods applied to the IOU configurations in this paper, respectively. The simulation results are satisfactory and show the feasibility of the designs.
Relation:	IEEE TRANSACTIONS ON MAGNETICS
Appears in Collections:	[Graduate Institute of Optics and Photonics] journal & Dissertation

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