The Future Direction of Optical Data Storage Technologies and Challenges in the 21st Century Media-Tech 2006 Long Beach Long Beach, California October 10-11, 2006 < by > Richard G. Zech, Ph.D. Consultant & Expert Witness -Computer Storage & Photonics President & Managing Principal The ADVanced ENTerprises (ADVENT) Group Colorado Springs, CO 80906 (719) 633-4377 v
[email protected] AAbbststrractact The advent of blue-laser (405nm) optical storage in the form of BD, HD DVD, holographic memories, and UDO would seem to signal the end of optical storage's technology life. But, in fact, the future of optical storage is still very bright. Once theoretical methods of capacity growth, such as multi- layer, multi-level, near-field, and holographic are ready to enter the product mainstream. The engineering challenges of these advanced recording methods on lasers, media, optical pickups, servos, and read/write channels will be significant, but achievable. One can confidently predict the future of optical storage will be 120-130mm disc media with capacities in the 100 GB to 1 TB range. October 10, 2006 The ADVanced ENTerprises (ADVENT) Group 2 CConontetentnt Ø Part 1 -Introduction Ø Part 2 -Near term Futures Ø Part 3 -Bleeding Edge Futures Ø Part 4 -Some Enabling Components Ø Part 5 -Replication and Disc Manufacturing Ø Part 6 -The Bottom line Ø Part 7 -Appendices October 10, 2006 The ADVanced ENTerprises (ADVENT) Group 3 PPaarrtt 11 Introduction Common Sense Ø Optical data storage is subject to Shannon’s channel capacity law: C = Nxlog2(1+S/N), where N is a function of l and NA and S/N of media quality.