Title :
Time-domain differential detection using photorefractive two-wave mixing in phase-only holographic data storage system
Author_Institution :
Graduate Sch. of Inf. Sci. & Technol., Hokkaido Univ., Sapporo
Abstract :
We propose a new method for detection of phase-modulated signals that provides higher energy efficiency detection and simplified alignments of position and intensity between interference images. By using time-domain differential detection with 2x over sampling, phase-modulated signals can be exactly distinguished.
Keywords :
differential detection; holographic storage; multiwave mixing; optical modulation; photorefractive effect; energy efficiency; intensity alignment; interference images; phase-modulated signals; phase-only holographic data storage; photorefractive two-wave mixing; position alignment; time-domain differential detection; Data storage systems; Energy efficiency; Holographic optical components; Holography; Image reconstruction; Image sampling; Phase detection; Photorefractive materials; Signal detection; Time domain analysis;
Conference_Titel :
Lasers and Electro-Optics - Pacific Rim, 2007. CLEO/Pacific Rim 2007. Conference on
Conference_Location :
Seoul
Print_ISBN :
978-1-4244-1173-3
Electronic_ISBN :
978-1-4244-1174-0
DOI :
10.1109/CLEOPR.2007.4391391
