Publications associées à Réfraction

Stress changes in H2-loaded SMF optical fibers induced by cw-Ar+ 244 nm irradiation

Hans Georg Limberger, Georgios Violakis, Nandita Aggarwal

Bragg gratings were inscribed in H2-loaded SMF-28e optical fibers and measured for axial stress changes for various exposure doses. Mean refractive index changes as high as 7.5 × 10-3 were observed under cw-244 nm irradiation of 143 W/cm2. Bragg grating re ...

Optical Soc Amer2012

Hybrid nanoparticle and thin film SPR biosensor with a high figure of merit

Olivier Martin, Banafsheh Abasahl, Arash Farhang

Due to their extreme sensitivity to refractive index changes, surface plasmon resonance (SPR) sensors have long been established as extremely valuable tools for biosensing. In the past few years researchers have begun investigating various other metallic n ...

Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa2012

Theoretical and experimental study of a 30nm metallic slot array

Hans Peter Herzig, Qing Tan, Armando Cosentino

We present the simulation, fabrication, and characterization of a metallic slot grating on a silicon waveguide (30nm slot width for a period of 500nm). According to the simulation, the experimental measured spectrum of the structure exhibits a dip in the n ...

2011

Correcting spherical aberrations induced by an unknown medium through determination of its refractive index and thickness

Pramod Rastogi, Daniel Iwaniuk

In imaging and focusing applications, spherical aberration induces axial broadening of the point spread function (PSF). A transparent medium between lens and object of interest induces spherical aberration. We propose a method that first obtains both the p ...

Optical Society of America2011

Photosensitivity and stress changes of Ge-free Bi-Al doped silica optical fibers under ArF excimer laser irradiation

Hans Georg Limberger, Christian Ban

The photosensitivity of germanium free Bi-Al-doped silica fibers with different bismuth concentrations was investigated using ArF excimer laser radiation at 193 nm and fiber grating formation. For the fiber with the highest bismuth concentration maximum re ...

Optical Society of America2011

Intra-cavity patterning for mode control in 1.3μm coupled VCSEL arrays

Elyahou Kapon, Benjamin Dwir, Alexandru Mereuta, Vladimir Iakovlev, Alexei Sirbu, Andrei Caliman, Lukas Mutter

We report coupled VCSEL arrays, emitting at 1.3μm wavelength, in which both the optical gain/loss and refractive index distributions were defined on different vertical layers. The arrays were electrically pumped through a patterned tunnel junction, whereas ...

Optical Society of America2011

YAG:Ce nanoparticle based converter layer for white LEDs

Elison de Nazareth Matioli

Our work is devoted to the development of YAG:Ce3+ nanoparticle based films for white LEDs. Very stable suspensions of YAG:Ce nanoparticles are synthesized by a glycothermal method at relatively low temperature (300 degrees C). Protected annealing in a sil ...

Spie-Int Soc Optical Engineering2011

Refractive-index and density matching in concentrated particle suspensions: a review

Christophe Ancey, Nicolas Andreini, Gaël Epely Chauvin, Sébastien Wiederseiner

Optical measurement techniques such as particle image velocimetry (PIV) and laser Doppler velocimetry (LDV) are now routinely used in experimental fluid mechanics to investigate pure fluids or dilute suspensions. For highly concentrated particle suspension ...

Springer-Verlag2011

Fabrication/Characterization of Fiber Gratings and Photosensitivity in Ge-Free Bi-Al-Silica Fibers - INVITED

Hans Georg Limberger, Georgios Violakis, Christian Ban

Refractive index changes up to 2.5 × 10-3 were demonstrated in H2-loaded germanium free Bi-Al-doped silica fibers using both ArF excimer and cw-Ar+-244 nm lasers. Tensile stress changes indicate clear contribution of compaction to the total index change. ...

2011

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Réfraction

Stress changes in H2-loaded SMF optical fibers induced by cw-Ar+ 244 nm irradiation

Hybrid nanoparticle and thin film SPR biosensor with a high figure of merit

Theoretical and experimental study of a 30nm metallic slot array

Correcting spherical aberrations induced by an unknown medium through determination of its refractive index and thickness

Photosensitivity and stress changes of Ge-free Bi-Al doped silica optical fibers under ArF excimer laser irradiation

Ultra-fast writing of self-organized bubble networks using femtosecond laser exposure in the cumulative regime

Intra-cavity patterning for mode control in 1.3μm coupled VCSEL arrays

YAG:Ce nanoparticle based converter layer for white LEDs

Refractive-index and density matching in concentrated particle suspensions: a review

Fabrication/Characterization of Fiber Gratings and Photosensitivity in Ge-Free Bi-Al-Silica Fibers - INVITED

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Chattez avec Graph Search

Fabrication/Characterization of Fiber Gratings and Photosensitivity in Ge-Free Bi-Al-Silica Fibers - INVITED

Ultra-fast writing of self-organized bubble networks using femtosecond laser exposure in the cumulative regime

Theoretical and experimental study of a 30nm metallic slot array

Correcting spherical aberrations induced by an unknown medium through determination of its refractive index and thickness

Hybrid nanoparticle and thin film SPR biosensor with a high figure of merit

Photosensitivity and stress changes of Ge-free Bi-Al doped silica optical fibers under ArF excimer laser irradiation

Intra-cavity patterning for mode control in 1.3μm coupled VCSEL arrays

YAG:Ce nanoparticle based converter layer for white LEDs

Refractive-index and density matching in concentrated particle suspensions: a review

Stress changes in H2-loaded SMF optical fibers induced by cw-Ar+ 244 nm irradiation