22 June 2006 Tracking servo method for the gap servo near field optical storage systems
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Proceedings Volume 6282, Optical Data Storage 2006; 62820E (2006) https://doi.org/10.1117/12.685173
Event: Optical Data Storage 2006, 2006, Montréal, Canada
Abstract
Gap servo systems based on one of near field technologies are generally using the 1-beam push pull method to generate servo signal and this causes the optical DC offset problem in servo signal. In this paper, we presented new method of track error generation using the proposed GELP signal for the gap servo near field optical storage systems. By using the GELP signal and 2-divided photo-detector for the gap error signal detection, test result shows the optical DC offset in track error signal generated from lens movement could be eliminated.
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Jeong-Kyo Seo, Jeong-Kyo Seo, Jeong Uk Lee, Jeong Uk Lee, Yun Sup Shin, Yun Sup Shin, Jin-Moo Park, Jin-Moo Park, In Ho Choi, In Ho Choi, Byung-Hoon Min, Byung-Hoon Min, "Tracking servo method for the gap servo near field optical storage systems", Proc. SPIE 6282, Optical Data Storage 2006, 62820E (22 June 2006); doi: 10.1117/12.685173; https://doi.org/10.1117/12.685173
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