The research paper Blu Ray Disc The Next Generation Optical Disc Technical Seminar says that the Blu-ray Disc or BD is yet another breakthrough. The industry is set for yet another revolution with the introduction of Blu-ray Discs (BD).
With their high storage capacity, Blu-ray discs can hold and playback large quantities of high-definition video and audio, as well as photos, data and other digital content. Also incorporated are some advanced security and privacy options and convenient accessibility features.
Advantages of BD: A single sided blu ray disc has the capacity to store information of about 27 gigabytes, that’s about the size of 13 hr standard definition movie or more than 2.5 hrs of a high definition movie. While the double layered one can store to about 54 gigabytes.
This enormous storage capability is considered to be the major advantage of the blu- ray disc to that of the conventional DVD’s in the market right now.
The research paper also explains that the name Blu-ray is derived from the underlying technology, which utilizes a blue-violet laser to read and write data. The name is a combination of “Blue” and optical ray “Ray”.
It is suggested in the research abstract that the BD technology utilizes a “blue” (actually blue violet) laser diode operating at a wavelength of 405 nm to read and write data. Conventional DVDs and CDs use red and infrared lasers at 650 nm and 780 nm respectively.