Title :
Study on PDLC films for variable optical attenuation in optical communication
Author :
Kang, Bonan ; Wang, Yu ; Ruan, Shengping ; Liu, Kuixue ; Chen, Lihua ; Li, Fumin
Author_Institution :
State Key Lab. on Integrated Optoelectron., Jilin Univ. Region, Changchun, China
Abstract :
Abstract-Polymer dispersed liquid crystal (PDLC) films with different liquid crystal (LC) E7 content were prepared by standard polymerization induced phase separation (PIPS) method. The corresponding optical transmittance curves were obtained at the wavelength of 1550 nm. The sample with LC E7 content of 76% shows favourate optical attenuation characteristic due to well-distributed polymer network structure and moderate size of the LC droplets. Its dynamic attenuation ranges from 1.06 dB to 26.21 dB and the threshold voltage is less than 3 V. Meanwhile, the response time of the PDLC film was measured as 7.407 ms. This PDLC films can be widely used in variable optical attenuation in optical communications.
Keywords :
liquid crystals; optical communication; polymer films; polymerisation; LC E7; LC droplets; PDLC films; PIPS method; liquid crystal E7; optical communication; optical transmittance curves; polymer dispersed liquid crystal films; polymerization induced phase separation method; time 7.407 ms; variable optical attenuation; wavelength 1550 nm; well-distributed polymer network structure; Attenuation; Liquid crystals; Optical attenuators; Optical films; Optical scattering; Polymers; Liquid crystal (LC); Ooptical communications; Polymer dispersed liquid crystal (PDLC); Polymerization induced phase separation (PIPS);
Conference_Titel :
Electrical and Control Engineering (ICECE), 2011 International Conference on
Conference_Location :
Yichang
Print_ISBN :
978-1-4244-8162-0
DOI :
10.1109/ICECENG.2011.6058020
