蓝光(Blu-ray Disk)将光盘的储存容量大举提升至25、50GB，但日系碟机大厂先锋(Pioneer)可从来没有满足,他们开发的新一代堆叠技术超级蓝光光碟(Super Multi-Layer),储存容量提升至400GB.
根据先锋公司的内部路线图,只读式的这种光盘将在2010年之前出现,而可擦写的1TB光盘将在2012年-2013年左右出现,以下是技术参数和图像:
Comparison of main specifications between BD and Pioneer\'s super multi-layer
Specification
BD
Pioneer\'s super multi-layer
Storage capacity and number of layers
25GB for single layer; 50GB for double layers
400GB for 16 layers; 500GB for 20 layers under development
Material of reflective layers
Metallic
Dielectric
Track pitch
25nm
10&14nm
PUH
405nm, 0.85
405nm, 0.85
