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Paper Abstract and Keywords
Presentation 2009-01-16 09:00
Amplification of Optical Disk Readout Signals by Homodyne Detection
Hideharu Mikami, Takahiro Kurokawa (Hitachi Ltd.,), Takeshi Shimano (Hitachi Maxell, Ltd.), Harukazu Miyamoto (Hitachi Ltd.,) MR2008-57 Link to ES Tech. Rep. Archives: MR2008-57
Abstract (in Japanese) (See Japanese page) 
(in English) We experimentally demonstrated the amplification of optical disc readout signals by homodyne detection. This technique uses optical interference to amplify the signals. We further applied phase-diversity detection to reliably obtain the amplified readout signal. The optical system was carefully designed so that sufficient stability is assured and a sufficiently amplified readout signal can be obtained. We experimentally demonstrated a 3.6 times amplification of a Blu-ray Disc readout signal. The present technique will be essential for the real commercialization of next-generation multilayer optical disc because of its outstanding ability of signal-to-noise ratio improvement.
Keyword (in Japanese) (See Japanese page) 
(in English) homodyne detection / optical pickup / phase-diversity detection / multilayer optical disc / / / /  
Reference Info. IEICE Tech. Rep., vol. 108, Jan. 2009.
Paper #  
Date of Issue 2009-01-08 (MR) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF MR2008-57 Link to ES Tech. Rep. Archives: MR2008-57

Conference Information
Conference Date 2009-01-15 - 2009-01-16 
Place (in Japanese) (See Japanese page) 
Place (in English)  
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Paper Information
Registration To MRIS 
Conference Code 2009-01-MMS-CE-MR 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Amplification of Optical Disk Readout Signals by Homodyne Detection 
Sub Title (in English)  
Keyword(1) homodyne detection  
Keyword(2) optical pickup  
Keyword(3) phase-diversity detection  
Keyword(4) multilayer optical disc  
1st Author's Name Hideharu Mikami  
1st Author's Affiliation Central Research Laboratory, Hitachi Ltd. (Hitachi Ltd.,)
2nd Author's Name Takahiro Kurokawa  
2nd Author's Affiliation Central Research Laboratory, Hitachi Ltd. (Hitachi Ltd.,)
3rd Author's Name Takeshi Shimano  
3rd Author's Affiliation Central Research Laboratory, Hitachi Ltd. (Hitachi Maxell, Ltd.)
4th Author's Name Harukazu Miyamoto  
4th Author's Affiliation Central Research Laboratory, Hitachi Ltd. (Hitachi Ltd.,)
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Speaker Author-1 
Date Time 2009-01-16 09:00:00 
Presentation Time 30 minutes 
Registration for MRIS 
Paper # MR2008-57 
Volume (vol) vol.108 
Number (no) no.380 
Page pp.35-40 
Date of Issue 2009-01-08 (MR) 

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