A measurement method of the transverse focus error detection system

Jianyong Zhang; Jianshe Ma; Duanyi Xu; Longfa Pan

doi:10.1117/12.649826

15 September 2005 A measurement method of the transverse focus error detection system

Jianyong Zhang, Jianshe Ma, Duanyi Xu, Longfa Pan

Proceedings Volume 5966, Seventh International Symposium on Optical Storage (ISOS 2005); 596625 (2005) https://doi.org/10.1117/12.649826
Event: Seventh International Symposium on Optical Storage (ISOS 2005), 2005, Zhanjiang, China

Abstract

Based on the focus pre-search a method is presented to measure the characters of the traverse focus error detection system. In the pre-search of traverse focus servo system, the traverse focus offset is measured by the focus error occurring time, and the traverse focus error sensitivity and linear range are measured by the focus error slope and peak-to-peak value. A traverse focus error detection system is measured. The results show that the traverse focus offset is too high to stable the focus servo.

Citation Download Citation

Jianyong Zhang, Jianshe Ma, Duanyi Xu, and Longfa Pan "A measurement method of the transverse focus error detection system", Proc. SPIE 5966, Seventh International Symposium on Optical Storage (ISOS 2005), 596625 (15 September 2005); https://doi.org/10.1117/12.649826

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