Signal processing and coding for multiwavelength and multilevel photochromic optical storage

Hua Hu; Duanyi Xu; Guosheng Qi

doi:10.1117/12.568672

3 January 2005 Signal processing and coding for multiwavelength and multilevel photochromic optical storage

Hua Hu, Duanyi Xu, Guosheng Qi

Author Affiliations +

Proceedings Volume 5643, Advances in Optical Data Storage Technology; (2005) https://doi.org/10.1117/12.568672
Event: Photonics Asia, 2004, Beijing, China

Abstract

Multi-wavelength and multilevel (MWML) optical storage with photochromic media is a novel technology that can increase storage capacity and transfer rates significantly. Signal processing and coding methods for the MWML storage channel are introduced in this paper. Two-dimensional codes with parallel detection and equalization are studied to increase storage capacity and combat the crosstalk between different wavelength materials. Multilevel amplitude modulation and M-ary runlength-limited (RLL) codes are described and compared for achieving higher coding capacity. The novel MWML recording technology has the potential to be applicable for the next generation optical data storage.

Citation Download Citation

Hua Hu, Duanyi Xu, and Guosheng Qi "Signal processing and coding for multiwavelength and multilevel photochromic optical storage", Proc. SPIE 5643, Advances in Optical Data Storage Technology, (3 January 2005); https://doi.org/10.1117/12.568672

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