Dr. Florent Gardillou Profile

Dr. Florent Gardillou

at Teem Photonics SA

SPIE Involvement:

Author

Publications (7)

Proceedings Article | 9 July 2018 Paper

First results on an electro-optic visible multi-telescope beam combiner for next generation FIRST/SUBARU instruments

G. Martin, F. Gardillou, C. Cassagnettes, D. Barbier, C. Guyot, J. Hauden, G. Ulliac, N. Courjal, N. Cvetojevic, E. Huby, S. Lacour

Proceedings Volume 10701, 107012V (2018) https://doi.org/10.1117/12.2312841

KEYWORDS: Waveguides, Glasses, Modulators, Electro optics, Lithium niobate, Phase modulation, Modulation, Prototyping, Optical fibers, Phase shift keying

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Proceedings Article | 26 July 2016 Paper

Novel multi-telescopes beam combiners for next generation instruments (FIRST/SUBARU)

G. Martin, T. Pugnat, F. Gardillou, C. Cassagnettes, D. Barbier, C. Guyot, J. Hauden, E. Huby, S. Lacour

Proceedings Volume 9907, 990738 (2016) https://doi.org/10.1117/12.2233105

KEYWORDS: Glasses, Lithium niobate, Waveguides, Phase shift keying, Modulators, Modulation, Beam splitters, Channel waveguides, Telescopes, Optical fibers

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Proceedings Article | 5 October 2015 Presentation

Adiabatic mode coupler on ion-exchanged waveguides for the efficient excitation of surface plasmon modes (Presentation Recording)

Josslyn Beltran Madrigal, Martin Berthel, Florent Gardillou, Ricardo Tellez Limon, Christophe Couteau, Denis Barbier, Aurelien Drezet, Rafael Salas-Montiel, Serge Huant, Sylvain Blaize, Wei Geng

Proceedings Volume 9545, 95450Q (2015) https://doi.org/10.1117/12.2188304

KEYWORDS: Biosensing, Waveguides, Surface plasmons, Electromagnetism, Plasmonics, Glasses, Near field scanning optical microscopy, Photonics, Light wave propagation, Radio propagation

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Several works have already shown that the excitation of plasmonic structures through waveguides enables a strong light confinement and low propagation losses [1]. This kind of excitation is currently exploited in areas such as biosensing [2], nanocircuits[3] and spectroscopy[4]. The efficient excitation of surface plasmon modes (SPP) with guided modes supported by high-index-contrast waveguides, such as silicon-on-insulator waveguides, had already been shown [1,5]. However, the use of weakconfined guided modes of a glass ion exchanged waveguide as a SPP excitation source represents a technological challenge, because the mismatch between the size of their respective electromagnetic modes is so high that the resultant coupling loss is unacceptable for practical applications. In this work, we describe how an adiabatic taper structure formed by an intermediate high-index-contrast layer placed between a plasmonic structure and an ion-exchanged waveguide decreases the mismatch between effective indices, size, and shape of the guided modes. This hybrid structure concentrates the electromagnetic energy from the micrometer to the nanometer scale with low coupling losses to radiative modes. The electromagnetic mode confined to the high-index-contrast waveguide then works as an efficient source of SPP supported by metallic nanostructures placed on its surface. We theoretically studied the modal properties and field distribution along the adiabatic coupler structure. In addition, we fabricated a high-index-contrast waveguide by electron beam lithography and thermal evaporation on top of an ion-exchanged waveguide on glass. This structure was characterized with the use of near field scanning optical microscopy (NSOM). Numerical simulations were compared with the experimental results. [1] N. Djaker, R. Hostein, E. Devaux, T. W. Ebbesen, and H. Rigneault, and J. Wenger, J. Phys. Chem. C 114, 16250 (2010). [2] P. Debackere, S. Scheerlinck, P. Bienstman, R. Baets, Opt. Express 14, 7063 (2006).] [3] A. A. Reiserer, J.-S. Huang, B. Hecht, and T. Brixner. Opt. Express 18(11), 11810–11820 (2010). [4] R. Salas-Montiel, A. Apuzzo, C. Delacour, Z. Sedaghat, A. Bruyant et al. Appl. Phys Lett 100, 231109 (2012) [5] A. Apuzzo M. Fevier, M. Salas-Montiel et al. Nano letters, 13, 1000-1006

Proceedings Article | 5 October 2015 Presentation

Interfacing ion-exchanged waveguide for the efficient excitation of surface plasmons (Presentation Recording)

Josslyn Beltran Madrigal, Martin Berthel, Florent Gardillou, Ricardo Tellez Limon, Christophe Couteau, Denis Barbier, Aurelien Drezet, Rafael Salas-Montiel, Serge Huant, Sylvain Blaize

Proceedings Volume 9547, 95471W (2015) https://doi.org/10.1117/12.2188124

KEYWORDS: Radio propagation, Waveguides, Plasmonics, Surface plasmons, Glasses, Electromagnetism, Near field scanning optical microscopy, Nanostructures, Photonics, Light wave propagation

Read Abstract +

Several works have already shown that the excitation of plasmonic structures through waveguides enables a strong light confinement and low propagation losses [1]. This kind of excitation is currently exploited in areas such as biosensing [2], nanocircuits[3] and spectroscopy[4]. Efficient excitation of surface plasmon modes (SPP) with guided modes supported by high-index-contrast waveguides, such as silicon-on-insulator waveguides, had already been shown [1,5], however, the use of weak-confined guided modes of an ion exchanged waveguide on glass as a source of excitation of SPP represents a scientific and technological breakthrough. This is because the integration of plasmonic structures into low-index-contrast waveguide increases the bandwidth of operation and compatibility with conventional optical fibers. In this work, we describe how an adiabatic tapered coupler formed by an intermediate high-index-contrast layer placed between a plasmonic structure and an ion-exchanged waveguide decreases the mismatch between effective indices, size, and shape of the guided modes. This hybrid structure concentrates the electromagnetic energy from the micrometer to the nanometer scale with low coupling losses to radiative modes. The electromagnetic mode confined to the high-index-contrast waveguide then works as an efficient source of SPP supported by metallic nanostructures placed on its surface. We theoretically studied the modal properties and field distribution along the adiabatic coupler structure. In addition, we fabricated a high-index-contrast waveguide by electron beam lithography and thermal evaporation on top of an ion-exchanged waveguide on glass. This structure was characterized with the use of near field scanning optical microscopy (NSOM). Numerical simulations were compared with the experimental results. [1] N. Djaker, R. Hostein, E. Devaux, T. W. Ebbesen, and H. Rigneault, and J. Wenger, J. Phys. Chem. C 114, 16250 (2010). [2] P. Debackere, S. Scheerlinck, P. Bienstman, R. Baets, Opt. Express 14, 7063 (2006).] [3] A. A. Reiserer, J.-S. Huang, B. Hecht, and T. Brixner. Opt. Express 18(11), 11810–11820 (2010). [4] R. Salas-Montiel, A. Apuzzo, C. Delacour, Z. Sedaghat, A. Bruyant et al. Appl. Phys Lett 100, 231109 (2012) [5] A. Apuzzo M. Févier, M. Salas-Montiel et al. Nano letters, 13, 1000-1006