Title :
Single device for excitation of both flexural and longitudinal acousto-optic effects in fiber Bragg gratings
Author :
Oliveira, Roberson A. ; Marques, Carlos A F ; Mayer, Carlos E N ; Pereira, Jucélio T. ; Nogueira, Rogério N. ; Pohl, Alexandre A P
Author_Institution :
Fed. Univ. of Technol. - Parana, Curitiba, Brazil
Abstract :
Experimental results on the acoustic modulation of fiber Bragg gratings are presented. Two main effects are achieved for the acousto-optic effect, one due to the longitudinal vibration mode of the fiber and the other due to the flexural mode. Using the flexural effect, the FBG reflectivity can be attenuated up to 26 dB, with a switching time of 63 ¿s. Using the longitudinal effect, lateral lobules separated by 0.3 nm can be induced.
Keywords :
Bragg gratings; acousto-optical effects; acousto-optical modulation; acoustic modulation; acousto-optic effects; fiber Bragg gratings; Acoustic waves; Acoustooptic effects; Bragg gratings; Fiber gratings; Optical control; Optical fiber devices; Optical fibers; Reflectivity; Resonance; Vibrations; Acousto-optic interaction; fiber Bragg gratings;
Conference_Titel :
Microwave and Optoelectronics Conference (IMOC), 2009 SBMO/IEEE MTT-S International
Conference_Location :
Belem
Print_ISBN :
978-1-4244-5356-6
Electronic_ISBN :
1679-4389
DOI :
10.1109/IMOC.2009.5427526
