Optical refractometer based on high birefringence Bragg grating Fabry-Perot cavity

• Type: Article in International Conference Proceedings Book
• Date: 2010

Authors

C. Jesus (Author) Other; O. Frazao (Author) FCUP; P.A.S. Jorge (Author) FCUP; J.M. Baptista (Author) FCUP

Conference proceedings International

Title: FOURTH EUROPEAN WORKSHOP ON OPTICAL FIBRE SENSORS

Fourth European Workshop on Optical Fibre Sensors

Porto, Portugal, 8 a 10 de Setembro de 2010

Indexing

ISI Web of Science

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Abstract (EN): An optical fibre sensor for simultaneous measurement of refractive index and temperature is presented. The refractive index measurement is based on the visibility variations of a Fabry- Perot interferometer with interfering waves generated in a low reflectivity Bragg grating inscribed on a Panda fibre and in the fibre tip (Fresnel reflection) in contact with the liquid. The temperature measurement is based on the wavelength shift of the FBG peaks. Results obtained show the feasibility of simultaneous measurement of refractive index and temperature and also the possibility of adjusting fringe visibility via polarization control.

Language: English

Type (Professor's evaluation): Scientific