Abstract

Optical disk technology has a considerable potentiality to provide reliable long-term data storage since it has little influence from the environmental electromagnetic fields and physical shocks. In addition, contactless reading process of optical data storage can promise the undamaged multiple information playbacks.¹ Thus, the long lifetime of optical disk is generally proposed by the manufactures with the claim over 30 years. Nevertheless, the data degradation is sometimes occurred during the long term storage, depending on the environmental conditions such as temperature, humidity and atmosphere. So far, there are many reports on the reliability test of optical disk for the archival applications.^2,3 However, there is relatively less focusing on the understanding of degradation mechanism and factor analysis for the optical disks.

© 2011 Optical Society of America