Dual-layer DVR with two lasers and a nonachromatic objective lens

Peijun Jiang; Duanyi Xu; Guosheng Qi; Xuesong Mai; Hui Zhao

doi:10.1117/12.483326

17 September 2002 Dual-layer DVR with two lasers and non-achromatic objective lens

Peijun Jiang, Duanyi Xu, Guosheng Qi, Xuesong Mai, Hui Zhao

Proceedings Volume 4930, Advanced Optical Storage Technology; (2002) https://doi.org/10.1117/12.483326
Event: Photonics Asia, 2002, Shanghai, China

Abstract

A dual-laser DVR system, which utilizes chromatic aberration to obtain dual-layer storage, is reported in this paper. A non-achromatic objective lens is used, which is especially designed. It focuses 405 nm laser and 440 nm laser on two recording layers of the disc. Parallel accessing is avaialble to incrase data rate. Another key problem of the system is how to achieve space layer with high thickness stability. Some key problems of this system are discussed, such as: disc structure, writing and reading strategy, etc.

Citation Download Citation

Peijun Jiang, Duanyi Xu, Guosheng Qi, Xuesong Mai, and Hui Zhao "Dual-layer DVR with two lasers and non-achromatic objective lens", Proc. SPIE 4930, Advanced Optical Storage Technology, (17 September 2002); https://doi.org/10.1117/12.483326

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