Reducing Interlayer Crosstalk in Reading Multilayer Disc for Compact Optical Pickup Using Polarizing Filter

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概要

• 論文の詳細を見る

• We proposed an interlayer crosstalk reduction device that can be used in an optical pickup based on the astigmatic aberration method. The device has two wave plates covering the half plane at different positions on the optical axis and an analyzer, and is placed in the beam of astigmatic aberration. We can make the polarization state of the beam after transmission of the two wave plates different according to whether the focal line position is situated between the two wave plates. We measured the device transmission and confirmed that the optical characteristics agree well with the simulation.

• 2011-09-25

著者

• Ide Tatsuro

  Central Research Laboratory, Hitachi, Ltd., 1-280 Higashi-Koigakubo, Kokubunji, Tokyo 185-8601, Japan

• Tatsu Eriko

  Central Research Laboratory, Hitachi, Ltd., Kokubunji, Tokyo 185-8601, Japan

• Kimura Shigeharu

  Central Research Laboratory, Hitachi, Ltd., Kokubunji, Tokyo 185-8601, Japan

関連論文

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• Amplification of Optical Disk Readout Signals by Homodyne Detection
• Signal-Readout System for Optical Pickup with Homodyne Detection Scheme
• Reduction of Interlayer Crosstalk of Multilayer Optical Disc by Using Phase-Diversity Homodyne Detection (Special Issue : Optical Memories)
• Read Data Transfer Rate Estimation in Optical Phase Multilevel Recording (Special Issue : Optical Memories)
• Experimental Demonstration of Optical Phase Multilevel Recording in Microhologram

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