Title :
Temperature dependent mode transition in high refractive index coated long period gratings
Author :
Luo, Haimei ; Li, Xinwan ; Wang, Shaoshi ; Wang, Xiang ; Chen, Jianping
Author_Institution :
State Key Lab. of Adv. Opt. Commun. Syst. & Networks, Shanghai Jiao Tong Univ., Shanghai, China
fDate :
Oct. 30 2008-Nov. 2 2008
Abstract :
Nano-scale HRI liquid crystal (LC) coatings are evenly smeared along long period gratings (LPGs). Experimental results show that the transition between cladding modes and overlay modes occurs when the refractive index of the LC layer is changed from 1.477 to 1.515 by increasing temperature. The sensitivity enhancement to HRI in the transition region is approximately 6 times the sensitivity outside the transition region.
Keywords :
diffraction gratings; liquid crystals; optical fibre cladding; optical films; refractive index; cladding modes; high refractive index coated long period gratings; liquid crystal coatings; overlay modes; temperature dependent mode transition; transition region; Coatings; Fiber gratings; Liquid crystals; Optical devices; Optical fiber communication; Optical films; Optical refraction; Optical sensors; Refractive index; Temperature dependence;
Conference_Titel :
Optical Fiber Communication & Optoelectronic Exposition & Conference, 2008. AOE 2008. Asia
Conference_Location :
Shanghai
Print_ISBN :
978-1-55752-863-6
Electronic_ISBN :
978-1-55752-863-6
