Title :
Electromagnetic field sensing using liquid crystal optical fibers
Author :
Byoungho Lee ; Yoonchan Jeong ; Seungin Baek ; Hak-Rin Kim ; Yonghyun Kim ; Yong Wook Lee ; Sin-Doo Lee
Author_Institution :
Sch. of Electr. Eng., Seoul Nat. Univ., South Korea
Abstract :
Liquid crystal optical fibers are tested for the use of electric voltage sensing. The transmission or reflection characteristics of the sensor heads depend on the environmental electromagnetic fields due to the directional change of the liquid crystal molecules. Not only the conventional nematic but also polymer-dispersed liquid crystals are tested.
Keywords :
electric field measurement; fibre optic sensors; liquid crystal devices; molecular orientation; nematic liquid crystals; polymer dispersed liquid crystals; voltage measurement; directional change; director alignment; electromagnetic field sensing; environmental electromagnetic fields; fiber-optical sensor applications; hollow core; liquid crystal molecules; liquid crystal optical fibers; nematic liquid crystals; polymer-dispersed liquid crystals; reflection characteristics; sensor heads; transmission characteristics; voltage sensing; Crystallization; Electromagnetic fields; Liquid crystal polymers; Liquid crystals; Magnetic materials; Optical fiber sensors; Optical fibers; Optical materials; Optical scattering; Voltage;
Conference_Titel :
Optical Fiber Sensors Conference Technical Digest, 2002. Ofs 2002, 15th
Conference_Location :
Portland, OR, USA
Print_ISBN :
0-7803-7289-1
DOI :
10.1109/OFS.2002.1000648
