These data are turned into ones and zeroes represented as opaque or translucent areas on a "page" -- this page is the image that the information beam is going to pass through. Page data stored as a hologram Photo courtesy Optware Once the page of data is created, the next step is to fire a laser beam into a beam splitter to produce two identical beams.
One of the beams is directed away from the SLM -- this beam becomes the reference beam. The other beam is directed toward the SLM and becomes the information beam. When the information beam passes through the SLM, portions of the light are blocked by the opaque areas of the page, and portions pass through the translucent areas.
In this way, the information beam carries the image once it passes through the SLM. When the reference beam and the information beam rejoin on the same axis, they create a pattern of light interference -- the holography data.
This joint beam carries the interference pattern to the photopolymer disc and stores it there as a hologram. A memory system isn't very useful if you can't access the data you've stored. In the next section, we'll find out how the HVD data-retrieval system works.Research papers holographic versatile disc – Serving the whole of the optics research papers holographic versatile disc community, Journal of Optics covers all aspects of research within modern and classical optics.
Holographic versatile disc technology can store terabytes of data on an optical disc. The Blu-ray disc can hold up to data of 25GB, while holographic versatile disc can hold data similar to more than ordinary DVDs and with a transfer speed of above 1 . But holographic data storage systems use the volume to store data.
It is based on the principle of holography. This paper provides a description of Holographic data storage system (HDSS), a three dimensional data storage system which has a fundamental advantage over conventional read/write memory systems. A brief overview of properties of holograms will be presented first.
The Holographic Versatile Disc (HVD) is an optical disc technology developed between April and mid that can store up to several terabytes of data on an optical disc 10 cm or 12 cm in diameter.
The reduced radius reduces cost and materials used. optical discs/drives to Holographic Versatile Disc (HVD) technology which promises to be a possible successor to technologies such as Bluray - and HD DVD, with .
In , an improved version of the CD, called a digital versatile disc (DVD), was released, which enabled the storage of full-length movies on a single disc. CDs and DVDs are the primary data storage methods for music, software, personal computing and video.