Tuesday, December 06, 2016
Search
  
Submit your own News for
inclusion in our Site.
Click here...
Breaking News
U.S. Supreme Court Rules in Favor of Samsung in Smartphone Patent Suit
TSMC And IBM Detail Their 7nm Progress At 2016 IEDM
Oculus Touch Now Available
European Commission Approves Acquisition of LinkedIn by Microsoft, Subject to Conditions
Google To Go Completely Green Using Renewable Energy Only
Yahoo's 2016 Top Searched Celebrities, News Stories, Fashion Trends, and More
Western Digital Introduces Enterprise-Class HDDs and SSDs, 14TB SMR HDDs On The Way
HARMAN Invests in Navdy and Partners to Offer Aftermarket Augmented Reality Driving Device
Active Discussions
Which of these DVD media are the best, most durable?
How to back up a PS2 DL game
Copy a protected DVD?
roxio issues with xp pro
Help make DVDInfoPro better with dvdinfomantis!!!
menu making
Optiarc AD-7260S review
cdrw trouble
 Home > News > Optical Storage > Sony Sh...
Last 7 Days News : SU MO TU WE TH FR SA All News

Wednesday, October 18, 2006
Sony Showcases New Holographic Recording System


Sony presented its achievements on data reading/writing with the use of the "Micro-Reflector recording" technology, a type of holographic recording that could bring holographic storage systems closer to commercialization.

Micro-Reflector recording

A laser light emitted from a blue violet semiconductor laser diode is split into two so that one irradiates the front side of a volumetric optical disc medium as a reference light, while the other is emitted to the back side as a recording light. By precisely aligning the focal points of the two laser beams using servo technology, the two counter-propagating light beams focus on the same point on the disc's holographic recording material. Their interference creates a diffraction-limited size fringe corresponding to a 1 bit.



When a laser light (reproduction light) is emitted on the front side of the medium having interference fringes, the recording light is reproduced. This light advances from the fringes to the medium front side as if the fringes reflect the reproduction light. This is why the system is called "Micro-Reflector recording".


The volumetric optical disc comprises a 0.3 mm thick photopolymer, sandwiched between 0.6 mm glass substrates. Since the depth of the interference fringes can be controlled by changing the depth of the focal points of the laser lights, multi-layer recording with 10-20 layers can be provided. The recorded interference fringes are small enough to prevent the photopolymer from expanding and contracting due to temperature changes. This eliminates the need for adjusting the wavelength of the laser in accordance with the temperature - a problem commonly faced in Holographic storage technologies. Hence, Sony's recording system can use a common, commercially available blue-violet semiconductor laser diode. Moreover, the system does not require the use of other components such as spatial light modulators, CMOS sensors or other parts, making its cost lower than other Holographic recording systems.

Sony demonstrated read/write operations using an optical system with a wavelength of 405 nm and a numerical aperture (NA) of 0.5. The system involves 17 PP modulation, already implemented by the the Blu-ray Disc. Sony recorded data on a single layer at a recording density of 1.25 GB in a 12 cm-disk. The company says that it aims to achieve multilayer recording by increasing the numerical aperture.


Previous
Next
Firms say Microsoft fails to keep EU bargain        All News        Transcend releases its High-Capacity USB 2.0 Flash Drive, the 16GB JetFlash 2A
Konica Minolta and Plasmon Form Strategic Alliance to Market Plasmon's UDO Archive Storage Solutions     Optical Storage News      Panasonic Develops Four-layer Blu-Ray Recordable Disc

Get RSS feed Easy Print E-Mail this Message

Related News
Sony and SKY Perfect JSAT Demonstrated Live Simultaneous 4K-HDR and HD-SDR Broadcast
Sony to Release First PlayStation games For Smartphones Next March
Sony Profit Decreased On Battery Unit Sale
Sony Announces a Loss Related to the Transfer of Its Battery Business To Muratta
Sony To Establish New Imaging Products And Solutions Company
Sony To Release Smartphone Games in 2018
New Sony Compact RX100 V And A6500 Flagship Cameras Released
New Sony Flagship 4K and HD Action Cams Support Image Stabilization
Sony Unveils Its New Products at IFA 2016
Sony Unveils 4K Movie Streaming Service For PCs
Games Outweigh Sagging Sensors For Sony
New Sony 4K Ultra HD TVs Released In The U.S.

Most Popular News
 
Home | News | All News | Reviews | Articles | Guides | Download | Expert Area | Forum | Site Info
Site best viewed at 1024x768+ - CDRINFO.COM 1998-2016 - All rights reserved -
Privacy policy - Contact Us .