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Proceedings Paper

Focus sensing method with improved pattern noise rejection
Author(s): Daniel R. Marshall
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Paper Abstract

Focus error sensing is a subject which has received much effort and ingenuity as the optical data storage industry has matured, yet there is still a need for techniques which provide improved accuracy, responsiveness and noise immunity. This paper discusses a class of techniques which demonstrate common mode rejection of signal corruption, and a particular member of that class which is based on lossless reflection at an interface.

Paper Details

Date Published: 1 July 1991
PDF: 8 pages
Proc. SPIE 1499, Optical Data Storage '91, (1 July 1991); doi: 10.1117/12.45931
Show Author Affiliations
Daniel R. Marshall, Hewlett Packard Co. (United States)

Published in SPIE Proceedings Vol. 1499:
Optical Data Storage '91

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