Strip-loaded slot waveguide: a step beyond integrated photonics limits (Conference Presentation)

Matthieu Roussey; Leila Ahmadi; Ségolène Pélisset; Markus Häyrinen; Arijit Bera; Ville Kontturi; Janne Laukkanen; Ismo Vartiainen; Seppo Honkanen; Yuri P. Svirko; Markku Kuittinen

doi:10.1117/12.2251705

19 April 2017 Strip-loaded slot waveguide: a step beyond integrated photonics limits (Conference Presentation)

Matthieu Roussey, Leila Ahmadi, Ségolène Pélisset, Markus Häyrinen, Arijit Bera, Ville Kontturi, Janne Laukkanen, Ismo Vartiainen, Seppo Honkanen, Yuri P. Svirko, Markku Kuittinen

Author Affiliations +

Proceedings Volume 10106, Integrated Optics: Devices, Materials, and Technologies XXI; 101061F (2017) https://doi.org/10.1117/12.2251705
Event: SPIE OPTO, 2017, San Francisco, California, United States

Abstract

We propose a novel waveguide type based on the concept of strip-loaded waveguide. A strip-loaded waveguide is composed of a thin-film slab waveguide allowing a vertical confinement of the electromagnetic field. A lower refractive index strip provides the lateral confinement by inducing a slight modification of the effective index in the slab. By using such a generic device we will demonstrate how the limits of integrated photonics can be extended, especially, in terms of propagation losses while adding complex structure on the waveguide. Since light sees only a slight variation of effective index, and not an abrupt change of material, propagation losses of the device are fully determined by the film rather than by the structuration. Different micro- and nano-structures will be presented through simulation and experimental results. We will focus especially on the study of Y-junctions, ring resonators, interferometers, and Bragg gratings. Another advantage of strip-loaded waveguides is the simplicity of fabrication. In order to fabricate the devices we employed nano-imprinting of polymer, a fabrication technique suitable for mass production. The low refractive index of the polymer allows a large panel of materials for the slab waveguide, e.g., silicon, titanium dioxide, and lithium niobate. This diversity in the choice of the materials gives to the platform the potential to operate on a wide wavelength range from UV to IR, for multiple applications in telecommunications, sensing and bio-sensing, and medical devices.

Conference Presentation

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Matthieu Roussey, Leila Ahmadi, Ségolène Pélisset, Markus Häyrinen, Arijit Bera, Ville Kontturi, Janne Laukkanen, Ismo Vartiainen, Seppo Honkanen, Yuri P. Svirko, and Markku Kuittinen "Strip-loaded slot waveguide: a step beyond integrated photonics limits (Conference Presentation)", Proc. SPIE 10106, Integrated Optics: Devices, Materials, and Technologies XXI, 101061F (19 April 2017); https://doi.org/10.1117/12.2251705

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KEYWORDS

Waveguides

Integrated photonics

Biosensing

Fabrication

Light wave propagation

Polymers

Radio propagation

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