Title :
Electro-Optical Characteristic of Frequency Modulation in Nano Ag Doped PDLC
Author :
Zhu, Tengfei ; Tan, Binghui ; Pan, Xuefeng ; Tao, Weidong ; Xu, Jian
Author_Institution :
Fac. of Sci., Ningbo Univ., Ningbo, China
Abstract :
Electro-optical properties of PDLC fabricated by doping Ag nanoparticles have been investigated in this article and it is shown that this novel material exhibits a unique E-O response characteristic that is sensitive to frequency modulation of applied voltage. The optical switching made of PDLC doping with Ag nanoparticles could be switched by modulating frequency of operating voltage square waveforms (FM) from 0-700 Hz instead of conventional amplitude modulation (AM). Nano Ag doped PDLC also shows shorter response time to burst square voltage waveforms than undoped sample and the deviation of two rise times can be as high as 50%. Thus, the present FM-PDLC device doping Ag nanoparticles may hopefully provide a completely new E-O device system with respect to lower frequency and voltage.
Keywords :
electro-optical modulation; electro-optical switches; frequency modulation; nanoparticles; nanophotonics; optical fabrication; optical polymers; polymer dispersed liquid crystals; silver; JkJk:Ag; electro-optical characteristics; frequency 0 Hz to 700 Hz; frequency modulation; nanoparticle-doped PDLC fabrication; operating voltage square waveform; optical switching; Doping; Electrooptic devices; Frequency modulation; Liquid crystal devices; Liquid crystal displays; Liquid crystal polymers; Nanoparticles; Optical materials; Optical sensors; Voltage;
Conference_Titel :
Photonics and Optoelectronics, 2009. SOPO 2009. Symposium on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-4412-0
DOI :
10.1109/SOPO.2009.5230055
