Investigation of certain diffraction effects in a double-layer optical disk

Jang Hoon Yoo; Chul Woo Lee; Dong ho Shin; Chanda Bartlett; Kit Iu Cheong; J. Kevin Erwin; M. Mansuripur

doi:10.1117/12.280687

Investigation of certain diffraction effects in a double-layer optical disk

Jang Hoon Yoo, Chul Woo Lee, Dong ho Shin, Chanda Bartlett, Kit Iu Cheong, J. Kevin Erwin, M. Mansuripur

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

Abstract

We report certain diffraction effects that are pertinent to the operation of double-layer optical recording media. The diffraction of light from the out-of-focus layer and the resulting distribution on the in-focus layer are studied using computer simulations. The findings are then verified by direct measurements. We also describe a technique for analyzing (by computer simulation) the focus-error signal, FES, in systems that use the astigmatic method in conjunction with the double-layer disk. The results of our computer simulations of the FES are compared with those measured in an actual disk drive; good agreement between computation and measurement is obtained.

Original language	English (US)
Pages (from-to)	150-158
Number of pages	9
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	3109
DOIs	https://doi.org/10.1117/12.280687
State	Published - 1997
Externally published	Yes
Event	Optical Data Storage '97 - Tucson, AZ, United States Duration: Apr 7 1997 → Apr 9 1997

ASJC Scopus subject areas

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

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10.1117/12.280687

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abstract = "We report certain diffraction effects that are pertinent to the operation of double-layer optical recording media. The diffraction of light from the out-of-focus layer and the resulting distribution on the in-focus layer are studied using computer simulations. The findings are then verified by direct measurements. We also describe a technique for analyzing (by computer simulation) the focus-error signal, FES, in systems that use the astigmatic method in conjunction with the double-layer disk. The results of our computer simulations of the FES are compared with those measured in an actual disk drive; good agreement between computation and measurement is obtained.",

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T1 - Investigation of certain diffraction effects in a double-layer optical disk

AU - Yoo, Jang Hoon

AU - Lee, Chul Woo

AU - Shin, Dong ho

AU - Bartlett, Chanda

AU - Cheong, Kit Iu

AU - Erwin, J. Kevin

AU - Mansuripur, M.

PY - 1997

Y1 - 1997

N2 - We report certain diffraction effects that are pertinent to the operation of double-layer optical recording media. The diffraction of light from the out-of-focus layer and the resulting distribution on the in-focus layer are studied using computer simulations. The findings are then verified by direct measurements. We also describe a technique for analyzing (by computer simulation) the focus-error signal, FES, in systems that use the astigmatic method in conjunction with the double-layer disk. The results of our computer simulations of the FES are compared with those measured in an actual disk drive; good agreement between computation and measurement is obtained.

AB - We report certain diffraction effects that are pertinent to the operation of double-layer optical recording media. The diffraction of light from the out-of-focus layer and the resulting distribution on the in-focus layer are studied using computer simulations. The findings are then verified by direct measurements. We also describe a technique for analyzing (by computer simulation) the focus-error signal, FES, in systems that use the astigmatic method in conjunction with the double-layer disk. The results of our computer simulations of the FES are compared with those measured in an actual disk drive; good agreement between computation and measurement is obtained.

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VL - 3109

SP - 150

EP - 158

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

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

T2 - Optical Data Storage '97

Y2 - 7 April 1997 through 9 April 1997

ER -

Investigation of certain diffraction effects in a double-layer optical disk

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