Theory Analysis of Differential Readout Signal for Super-RENS Optical Disc

Author

Hu, Wenhua ; Li, Xiujian ; Yang, Jiankun ; Yang, Junbo ; Urbach, H.P. ; Pereira, S.F.

Author_Institution

Tech-Phys. Res. Center of Sci. Coll., Nat. Univ. of Defense Technol., Changsha, China

fYear

2010

fDate

19-21 June 2010

Firstpage

1

Lastpage

4

Abstract

The differential readout method for Super-Resolution Near-field Structure (Super-RENS) optical disc is analyzed with scalar diffraction theory. Base on the simple model of Super-RENS disks, we analyze the relationship between differential readout signal and several influence factors, such as the waist size of incident laser beam, the gap between data layer and super resolution(SR) layer, and nonlinear characters of SR layer. Numerical simulations demonstrate the advantage of differential readout method. Further analysis indicate that, wide waist size, thin gap, and large SR optical characters will improve the performance of differential readout signal.

Keywords

laser beams; light diffraction; optical disc storage; Super-RENS optical disc; data layer; differential readout signal; incident laser beam; numerical simulations; scalar diffraction theory; super resolution layer; super-resolution near-field structure; Laser beams; Laser modes; Laser theory; Nonlinear optics; Numerical simulation; Optical diffraction; Signal analysis; Signal resolution; Strontium; Structural discs;

fLanguage

English

Publisher

ieee

Conference_Titel

Photonics and Optoelectronic (SOPO), 2010 Symposium on

Conference_Location

Chengdu

Print_ISBN

978-1-4244-4963-7

Electronic_ISBN

978-1-4244-4964-4

Type

conf

DOI

10.1109/SOPO.2010.5504248

Filename

5504248