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

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

Authors

Jesus, C (Author) Other; Frazao, O (Author) FCUP; Jorge, PAS (Author) FCUP; Baptista, JM (Author) Other

Conference proceedings International

Title: FOURTH EUROPEAN WORKSHOP ON OPTICAL FIBRE SENSORS

Fourth European Workshop on Optical Fibre Sensors

Porto, PORTUGAL, SEP 08-10, 2010

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Other information

Authenticus ID: P-003-AZN

DOI: 10.1117/12.866613

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

No. of pages: 4