Diffraction analysis and evaluation of several focus- And track-error detection schemes for magneto-optical disk systems

Bruce E. Bernacki; M. Mansuripur

doi:10.1117/12.137536

Diffraction analysis and evaluation of several focus- And track-error detection schemes for magneto-optical disk systems

Bruce E. Bernacki, M. Mansuripur

Research output: Contribution to journal › Conference article › peer-review

7 Scopus citations

Abstract

A commonly used tracking method on pre-grooved magneto-optical (MO) media is the push-pull technique, and the astigmatic method is a popular focus-error detection approach. These two methods are analyzed using DIFFRACT^©, a general-purpose scalar diffraction modeling program, to observe the effects on the error signals due to focusing lens misalignment, Seidel aberrations, and optical crosstalk (feedthrough) between the focusing and tracking servos. Using the results of the astigmatic/push-pull system as a basis for comparison, a novel focus/track-error detection technique that utilizes a ring toric lens is evaluated as well as the obscuration method (focus error detection only).

Original language	English (US)
Pages (from-to)	150-156
Number of pages	7
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	1663
DOIs	https://doi.org/10.1117/12.137536
State	Published - 1992
Event	Optical Data Storage Topical Meeting 1992 - San Jose, United States Duration: Feb 9 1992 → Feb 14 1992

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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title = "Diffraction analysis and evaluation of several focus- And track-error detection schemes for magneto-optical disk systems",

abstract = "A commonly used tracking method on pre-grooved magneto-optical (MO) media is the push-pull technique, and the astigmatic method is a popular focus-error detection approach. These two methods are analyzed using DIFFRACT{\textcopyright}, a general-purpose scalar diffraction modeling program, to observe the effects on the error signals due to focusing lens misalignment, Seidel aberrations, and optical crosstalk (feedthrough) between the focusing and tracking servos. Using the results of the astigmatic/push-pull system as a basis for comparison, a novel focus/track-error detection technique that utilizes a ring toric lens is evaluated as well as the obscuration method (focus error detection only).",

author = "Bernacki, {Bruce E.} and M. Mansuripur",

year = "1992",

doi = "10.1117/12.137536",

language = "English (US)",

volume = "1663",

pages = "150--156",

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TY - JOUR

T1 - Diffraction analysis and evaluation of several focus- And track-error detection schemes for magneto-optical disk systems

AU - Bernacki, Bruce E.

AU - Mansuripur, M.

PY - 1992

Y1 - 1992

N2 - A commonly used tracking method on pre-grooved magneto-optical (MO) media is the push-pull technique, and the astigmatic method is a popular focus-error detection approach. These two methods are analyzed using DIFFRACT©, a general-purpose scalar diffraction modeling program, to observe the effects on the error signals due to focusing lens misalignment, Seidel aberrations, and optical crosstalk (feedthrough) between the focusing and tracking servos. Using the results of the astigmatic/push-pull system as a basis for comparison, a novel focus/track-error detection technique that utilizes a ring toric lens is evaluated as well as the obscuration method (focus error detection only).

AB - A commonly used tracking method on pre-grooved magneto-optical (MO) media is the push-pull technique, and the astigmatic method is a popular focus-error detection approach. These two methods are analyzed using DIFFRACT©, a general-purpose scalar diffraction modeling program, to observe the effects on the error signals due to focusing lens misalignment, Seidel aberrations, and optical crosstalk (feedthrough) between the focusing and tracking servos. Using the results of the astigmatic/push-pull system as a basis for comparison, a novel focus/track-error detection technique that utilizes a ring toric lens is evaluated as well as the obscuration method (focus error detection only).

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DO - 10.1117/12.137536

M3 - Conference article

AN - SCOPUS:85076893546

SN - 0277-786X

VL - 1663

SP - 150

EP - 156

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

T2 - Optical Data Storage Topical Meeting 1992

Y2 - 9 February 1992 through 14 February 1992

ER -

Diffraction analysis and evaluation of several focus- And track-error detection schemes for magneto-optical disk systems

Abstract

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