Campus da FEUP Rua Dr. Roberto Frias, 378 4200 - 465 Porto Portugal T +351 222 094 000 F +351 222 094 050 © 2008 NOVEL.

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Presentation transcript:

Campus da FEUP Rua Dr. Roberto Frias, Porto Portugal T F © 2008 NOVEL OPTICAL FIBRE SENSORS NOVOS SENSORES EM FIBRA ÓPTICA Orlando Frazão 2010 July 07

© Outline Capital = 1250 k€ State-of-the-arts (brief review) Hi-Bi Photonic Crystal Fibre Suspended Core Fibre Suspended Twin-core fibre H-shaped Fibre Bragg Fibre New configurations

© 2008 State-of-the-arts – Phillip Russel invented the concept of Photonic Crystal Fiber (PCF) Fibres with notable optical properties Phillip Russel Optical sensing Gas sensing Biosensing … Dispersion compensation Supercontinum Non-linear effects …

© 2008 State-of-the-arts 4 Microstructured fibre – The index-guiding PCF basic structure is a solid core surrounded by a microstructured cladding. 633 nm 1550 nm Pitch =d/ 

© 2008 Hi-Bi Photonic Crystal Fibre 5 O. Frazão, C. Jesus, J. M. Baptista, J. L. Santos, P. Roy, “Fiber-optic Polarimetric Torsion Sensor based on a Two- LP-mode Operation in Birefringent Fiber”, IEEE Photonics Technology Letters, 21 (17), , , September 2009.

© 2008 Hi-Bi Photonic Crystal Fibre 6

© 2008 Suspended Core Fibre 7 Berlin/COST299/2008 FEB 07 Experimental setup O. Frazão. S. H. Aref, J. L. Santos. H. Latifi, J. Kobelke, K. Schuster, J. M. Baptista, “Fabry– Perot Cavity using a Suspended-core Fiber for Strain and Temperature Measurement”, IEEE Photonics Technology Letters, 21 (17), , September 2009.

© Suspended Core Fibre Strain and temperature characterization 8.89/7.65=1.16

© Suspended Twin-core fibre O. Frazão, S. F. O. Silva, J.M. Baptista, J. L. Santos, J. Kobelke, K. Schuster. “All fiber Mach-Zehnder interferometer based on suspended twin-core fiber”, IEEE Photonics Technology Letters, 2010.

© Suspended Twin-core fibre

© H-shaped Fibre O. Frazão, T. Martynkien, J. M. Baptista, J. L. Santos, W. Urbanczyk, J. Wojcik, “Optical refractometer based on a birefringent Bragg grating written in an H-shape fiber”, Optics Letters, 34 (1), 76-78, January 2009.

© H-shaped Fibre

© Bragg Fibre O. Frazão, L. M. N. Amaral, J. M. Baptista, P. Roy, R. Jamier and S. Février, Strain and Temperature Discrimination using Modal Interferometry in Bragg Fibers, IEEE Photonics Technology Letters, 2010.

© Bragg Fibre

© 2008 New Applications 15

© THANK YOU Obrigado