Push pull readout of multilayer optical disc

Jean-Claude Lehureau; Joseph Colineau

doi:10.1117/12.532406

16 September 2003 Push pull readout of multilayer optical disc

Jean-Claude Lehureau, Joseph Colineau

Proceedings Volume 5069, Optical Data Storage 2003; (2003) https://doi.org/10.1117/12.532406
Event: Optical Data Storage 2003, 2003, Vancouver, Canada

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.

Citation Download Citation

Jean-Claude Lehureau and Joseph Colineau "Push pull readout of multilayer optical disc", Proc. SPIE 5069, Optical Data Storage 2003, (16 September 2003); https://doi.org/10.1117/12.532406

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