Thursday, October 08, 2015
Submit your own News for
inclusion in our Site.
Click here...
Breaking News
AT&T Customers Allowed To Make Calls Over Wi-Fi
Amazon Launches App Developing Platform For IoT
18.4-inch Samsung Galaxy View Tablet Passes FCC Certification
Facebook to Test Emoji Icons
Lite-On Introduces New EP2 SSD With NVMe Protocol
SanDisk and HP Team Up to Create Memory-Driven Computing Solutions
IBM Takes On Intel's x86 Systems With New Linux Servers
LG Triples OLED TV Line-up, Slashes Prices
Active Discussions
How to back up a PS2 DL game
Copy a protected DVD?
roxio issues with xp pro
How to burn a backup copy of The Frozen Throne
Help make DVDInfoPro better with dvdinfomantis!!!
Copied dvd's say blank in computer only
menu making
Optiarc AD-7260S review
 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.

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 Acquires Softkinetic Systems To Expand Its Image Sensor Offerings
Sony Semiconductor Solutions Corporation Established
New Sony Software Upgrade, Rolls For Xperia M2 and Xperia M2 Aqua
Sony Brings Hi-Res Audio to the Car
Sony Adds Uncompressed 14-Bit RAW Still Image Capture for New α Cameras
Sony Launches The Ultra-sensitive a7S II Full-frame Camera
New Sony Bravia X9000C 4K TV Is Extremely Thin
Sony Unveils Its New Products at IFA 2015
Sony Launches Remote-speaker Hybrid
Sony to Offer Drone Services
Sony introduces next generation SmartBand 2
Sony's Midrange Xperia C5 Ultra and M5 Smartphones Come With Strong Cameras

Most Popular News
Home | News | All News | Reviews | Articles | Guides | Download | Expert Area | Forum | Site Info
Site best viewed at 1024x768+ - CDRINFO.COM 1998-2015 - All rights reserved -
Privacy policy - Contact Us .