Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Fai H. Mok"'
Publikováno v:
Optics Communications. 117:49-55
The 90-degrees geometry - with reference and signal beams entering orthogonal crystal faces - is used to angularly multiplex up to 500 holograms at each of 8 spatially multiplexed locations in a LiNbO3 crystal. A segmented mirror array and a 2D mecha
Publikováno v:
Optics letters. 21(12)
We show that the oxidation state of Fe in LiNbO3 has two competing effects on the diffraction efficiency of multiple holograms in 90 degrees-geometry holographic storage. For crystals with moderate absorption, the saturation space-charge field is lar
Autor:
Fai H. Mok
Publikováno v:
Optics letters. 18(11)
As many as 5000 holograms of high-resolution images (320 × 220 pixels) have been stored within a single crystal of Fe:LiNbO3. The nominal angle between the reference beam and the object beam was 90°. Fractal-space multiplexing was used to increase
Autor:
Eric R. Fossum, Demetri Psaltis, Fai H. Mok, George Panotopoulos, Sandor L. Barna, Jose Mumbru, Suat U. Ay, Xin An
Publikováno v:
SPIE Proceedings.
The Optically Programmable Gate Array (OPGA), an optical version of a conventional FPGA, benefits from a direct parallel interface between an optical memory and a logic circuit. The OPGA utilizes a holographic memory accessed by an array of VCSELs to
Publikováno v:
Advanced Optical Data Storage: Materials, Systems, and Interfaces to Computers.
The holographic disc is a high capacity, disk-based data storage device that can provide the performance for next generation mass data storage needs. With a projected capacity approaching 1 terabit on a single 12 cm platter, the holographic disc has
Publikováno v:
SPIE Proceedings.
The high data transfer rate achievable in page-oriented optical memories demands for parallel interfaces to logic circuits able to process efficiently the data. The Optically Programmable Gate Array, an enhanced version of a conventional FPGA, utiliz
Publikováno v:
SPIE Proceedings.
Reconfigurable processors bring a new computational paradigm where the processor modifies its structure to suit a given application, rather than having to modify the application to fit the device. The Optically Programmable Gate Array, an enhanced ve
Publikováno v:
Optoelectronic Interconnects VI.
The issue of interfacing holographic memory with an electronic processor is discussed. The high speed and parallel access of 2D, page formatted optical data from holographic memory can be utilized to reconfigure an electronic processor at a rate much
Publikováno v:
SPIE Proceedings.
We describe a page—formatted random—access holographic memory capable of storing up to 160,000 holograms.A segmented mirror array allows a 2—dimensional angle scanner to provide access to any of the stored holograms.High—speed random access c
Publikováno v:
SPIE Proceedings.
We describe a page-formatted random-access holographic memory designed to store up to 160,000 holograms. The memory consists of 16 vertically spaced locations, each containing 10,000 holograms, which in turn are organized as 10 fractal-multiplexed ro