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Proceedings Paper

Crosstalk cancellation of differential readout technology for Super-RENS disc system
Author(s): Wenhua Hu; Xiujian Li; Jiankun Yang; Yongmin Nie
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Paper Abstract

The crosstalk reduction of differential readout technology for Super-Resolution Near-field Structure (Super- RENS) disc system is analyzed. We calculate the crosstalk for both differential readout technology and normal readout technology by using scalar diffraction theory. Numerical analyses indicate that the differential readout technique is effective as a mean of crosstalk reduction. Further analyses demonstrate the effects of different Gaussian-weighted beams, defocus and track error on cross-talk ratio for both readout technologies. Simulations show that the wide incident beam is preferable to gain low crosstalk. By comparing the two kinds of readout technologies, we also find that the differential readout technology always obtains higher quality signal.

Paper Details

Date Published: 2 December 2010
PDF: 6 pages
Proc. SPIE 7851, Information Optics and Optical Data Storage, 78510X (2 December 2010); doi: 10.1117/12.868320
Show Author Affiliations
Wenhua Hu, National Univ. of Defense Technology (China)
Xiujian Li, National Univ. of Defense Technology (China)
Jiankun Yang, National Univ. of Defense Technology (China)
Yongmin Nie, National Univ. of Defense Technology (China)


Published in SPIE Proceedings Vol. 7851:
Information Optics and Optical Data Storage
Feijun Song; Shiquan Tao; Francis T. S. Yu; Suganda Jutamulia; Kees A. Schouhamer Immink; Keiji Shono, Editor(s)

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