Analysis of DPD signal offset caused by optical asymmetry

SeongYun Jeong; Jung-Bae Kim; Jin-Yong Kim

doi:10.1117/12.280674

30 July 1997 Analysis of DPD signal offset caused by optical asymmetry

SeongYun Jeong, Jung-Bae Kim, Jin-Yong Kim

Proceedings Volume 3109, Optical Data Storage 1997 Topical Meeting; (1997) https://doi.org/10.1117/12.280674
Event: Optical Data Storage Topical Meeting '97, 1997, Tucson, AZ, United States

Abstract

A simple model to clearly show the causes of offset in DPD (Differential Phase Detection) signal is suggested. From this model, we can see the offset mechanism in case lens shift and disc tilt occur, respectively. We also suggest the feasibility of using 2-segment DPD. Comparison of 2-seg. DPD with conventional 4-seg. DPD is made.

Citation Download Citation

SeongYun Jeong, Jung-Bae Kim, and Jin-Yong Kim "Analysis of DPD signal offset caused by optical asymmetry", Proc. SPIE 3109, Optical Data Storage 1997 Topical Meeting, (30 July 1997); https://doi.org/10.1117/12.280674

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