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“Optware’s Collinear Holography together with Sony’s blue laser diode ignites Sony’s Holographic Optical Data Storage Development.
YOKOHAMA, Japan, July 27, 2004
Optware Corp., the developer of Collinear Holographic Data Storage System, announced today that it had accepted an order from Sony Corp. for a holographic optical disc read / write equipment, which uses Optware’s patented collinear holographic system. Sony’s blue laser diode with external cavity (for holographic data storage) will be used for the system’s laser source.This development equipment uses the collinear holographic system to read and write data to a holographic optical disc. As such it is instrumental in accelerating the development of holographic optical disc storage systems and media. By adopting a blue laser diode as the laser source, Sony hopes to develop low-cost storage solutions for the consumer market in the near future. Optware expects to deliver the system as early as mid-August.
Optware is located in Yokohama and its president and CEO is Yoshio Aoki, Ph.D. Capitalized at \1.25 billion, Optware is in the process of developing a next-generation, high-capacity optical data storage system, featuring a DVD-sized disc that can store over a terabyte (one trillion bytes) of data, using holographic optical technology.
Hologram generating systems can be broadly divided into two types. In the first type, the dual-beam interference method, light is recorded from two laser sources placed at an angle to each other to produce the image. The second type is the collinear holographic method developed by Optware, in which two laser beams travel along the same path, one carrying data pattern and the second carrying reference pattern. Sony’s ordering the Optware system clearly indicates the industry wide recognition of the superiority of collinear holography to conventional dual-beam interference holography as an approach for developing commercially viable holographic optical storage systems. This significant equipment order underscores Optware’s role as a leader in the development of holographic recording technology.
A delighted Dr. Aoki commented as follows:
Our collinear holographic recording technology is a complete departure from conventional approaches to holographic recording. It is designed to capitalize fully on the capabilities of optical disc technologies such as CD and DVD. In addition to securing this purchase order from Sony, the acknowledged leader in optical-disc technology, Optware acquires a blue semiconductor laser developed by Sony for holographic recording. These two key developments are sure to accelerate Optware’s efforts to commercialize applications in collinear holography.Features of the equipment
* Collinear holographic system writes and reads back digital page data in holographic form.
* Dual-wavelength laser system provides an autofocus mechanism that does not expose the recording medium.
* Writing and reading are automated using scripts.Key measurement items
* Sensitivity
* Intensity Distribution Analysis
* Signal to Noise Ratio
* Error Rate
* Multiplexing
* Shift Selectivity
Optware’s holographic recording technologyHolographic recording technology records data on discs in the form of laser interference fringes, enabling existing discs the same size as today’s DVDs to store as much as one terabyte of data (200 times the capacity of a single layer DVD), with a transfer speed of one gigabyte per second (40 times the speed of DVD). This approach is rapidly gaining attention as a high-capacity, high-speed data storage technology for the age of broadband.
Optware Corp. was established in 1999 as a development venture to find ways of incorporating holographic recording technology, seen as the heart of the high-capacity optical discs of the future, in commercially viable products. The Company’s arsenal of valuable patents includes collinear holography, a technique that enables great simplification of optical systems.
The collinear holography technique
Optware’s exclusive development of the collinear holography technique is part of its effort to make holographic recording technology practical. A patented technology originally proposed by Optware founder and chief evangelist Hideyoshi Horimai, collinear holography combines a reference laser and signal laser on a single beam, creating a three-dimensional hologram composed of data fringes. This image is illuminated on the medium using a single objective. Using this breakthrough mechanism, Optware dramatically simplified and downsized the previously bulky and complicated systems required to generate holograms. Further enhancements were achieved with Optware’s exclusive servo system. The introduction of this mechanism enabled reduced pickup size, elimination of vibration isolators, high-level compatibility with DVD and CD discs and low-cost operation, effectively obliterating the remaining obstacles to full commercialization.”
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I really do believe that optical computing is the next step. Say what you want about quantum computing, but I really don’t put much faith in something that people can’t build yet but are convinced ‘will be great sometime’
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