Title :
Parallel Optical Data Storage Based on Polarization Addressed Amplitude Modulation in Dye-Doped Liquid Crystals
Author :
Wei-Chia Su ; Wen-Bin Hung ; Li-Peng Chen
Author_Institution :
Grad. Inst. of Photonics, Nat. Changhua Univ. of Educ., Changhua, Taiwan
Abstract :
A technique of parallel storage in dye-doped liquid crystals (DDLCs) is presented in this study. Parallel recording is implemented by imaging a 2-D pattern on the DDLC film. An s -polarized laser beam with wavelength of 532 nm was used as the recording beam and the same laser beam with p-polarization was used as the erasing beam. Recording and erasing mechanism is based on the polarization induced amplitude modulation. Pixels numbers of each recorded page image signal on the DDLC is 1024 × 768 pixels with 2 μm pixel spacing.
Keywords :
dyes; laser beams; liquid crystals; liquid films; optical information processing; optical modulation; 2D pattern imaging; DDLC film; dye-doped liquid crystals; p-polarization laser beam; page image signal; parallel optical data storage; parallel recording; polarization addressed amplitude modulation; s-polarized laser beam; wavelength 532 nm; Holographic optical components; Holography; Laser beams; Liquid crystals; Measurement by laser beam; Optical imaging; Optical polarization; Optical data storage; amplitude modulation; dye-doped liquid crystals;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/JSTQE.2013.2278219
