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Proceedings Paper

Push pull readout of multilayer optical disc
Author(s): Jean-Claude Lehureau; Joseph Colineau
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Paper Abstract

Optical disc readout uses generally the "Central Aperture Readout" method. We show that "Push Pull Readout" can read efficiently very small phase modulation have good transparency and allow the stacking of many layers. We modified the push pull detection by adding a variable transparency in the far field that reduces the interlayer crosstalk, the system has potential for Terabyte capacity. We have realized a 8 layer DVD like optical disc and demonstrated that Push Pull Readout gives sufficient signal even on highly transparent disc.

Paper Details

Date Published: 16 September 2003
PDF: 5 pages
Proc. SPIE 5069, Optical Data Storage 2003, (16 September 2003); doi: 10.1117/12.532406
Show Author Affiliations
Jean-Claude Lehureau, Thales Research and Technology (France)
Joseph Colineau, Thales Research and Technology (France)


Published in SPIE Proceedings Vol. 5069:
Optical Data Storage 2003
Michael O'Neill; Naoyasu Miyagawa, Editor(s)

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