Nonlinear thermal sensitivity of a long-period grating

Author

Costa, Rita Zanlorensi Visneck ; Kamikawachi, Ricardo Canute ; Possetti, Gustavo Rafael Collere ; Muller, Marcia ; Fabris, José Luís

Author_Institution

Fed. Univ. of Technol., Curitiba

fYear

2007

fDate

Oct. 29 2007-Nov. 1 2007

Firstpage

693

Lastpage

697

Abstract

This work shows the thermal sensitivity of a long period grating immersed in six different external media, with refractive indices ranging from 1.0000 to 1.4315, corresponding to air, water, ethanol, thinner, turpentine and kerosene. Changes of thermal sensitivity from negative to positive values were quantified, with behaviors transitioning from linear to nonlinear, depending on the refractive index of surroundings. Values for grating refractive index sensitivity and coupling thermo-optic coefficient are also determined.

Keywords

diffraction gratings; fibre optic sensors; refractive index; sensitivity; thermo-optical effects; fiber sensors; long-period fiber grating; nonlinear thermal sensitivity; refractive index; thermo-optic coupling coefficient; Capacitive sensors; Fiber gratings; Optical attenuators; Optical fiber devices; Optical fiber sensors; Optical fiber theory; Optical recording; Optical refraction; Refractive index; Temperature sensors; Fiber gratings; fiber sensors; long period gratings; non-linear thermal sensitivity;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Optoelectronics Conference, 2007. IMOC 2007. SBMO/IEEE MTT-S International

Conference_Location

Brazil

Print_ISBN

978-1-4244-0661-6

Electronic_ISBN

978-1-4244-0661-6

Type

conf

DOI

10.1109/IMOC.2007.4404356

Filename

4404356