DSpace Angular :: Browsing CAP - Other Publications by Title

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All-fibre Wavelength Conversion Based on Four-Wave-Mixing in a Ring Erbium Doped Fibre Laser

( 2003) ; Orlando Frazão ; Manuel Joaquim Marques ; Joel Pedro Carvalho ; Henrique Salgado

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Application of Optical Coherence Tomography in Micrometric Industrial Inspection

( 2013) Carla Carmelo Rosa ; Hosseiny,H ; Marques,MJ

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Current Trends on Glass and Ceramics Materials

( 2012) Nandyala Hussain

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Deposition of Bioactive Glass-Ceramic Thin-Films by RF Magnetron Sputtering

( 2003) Ednan Joanni ; Andrei Mardare ; José Ramiro Fernandes ; Cezarina Mardare

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Fibre Bragg Grating Sensor for Simultaneous Measurement of Salinity and Temperature

( 2004) José Luís Santos ; Orlando Frazão ; Dionísio Pereira

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H-2 Sensing Based on a Pd-Coated Tapered-FBG Fabricated by DUV Femtosecond Laser Technique

( 2013) Susana Oliveira Silva ; Luís Carlos Coelho ; José Almeida ; Orlando Frazão ; José Luís Santos ; Malcata,FX ; Becker,M ; Rothhardt,M ; Bartelt,H

An optical fiber probe sensor based on a tapered-fiber Bragg grating (FBG) coated with 150-nm-thick Pd film is proposed for hydrogen detection. The FBG was written in a 50-mu m-diameter tapered fiber by deep ultraviolet femtosecond laser technology. A second FBG was inscribed in the 125 mu m-fiber section for temperature compensation. The sensing head was able to detect H-2 concentration in the range 0%-1% (v/v) H-2 at room temperature; a maximum sensitivity of 81.8 pm/%(v/v) H-2 was attained with temperature compensation. The influence of the Pd coating over temperature sensitivity of standard and tapered-FBGs is also presented.

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In Situ temperature measurement of an optical fibre submitted to electric arc discharges