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

fYear

2008

fDate

Oct. 30 2008-Nov. 2 2008

Firstpage

1

Lastpage

3

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;

fLanguage

English

Publisher

ieee

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

Type

conf

Filename

5348613