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Proceedings 2017, 1(4), 286; doi:10.3390/proceedings1040286

Efficient Vertical-Cavity Mid-IR Thermal Radiation to Silicon-Slab Waveguide Coupling Using a Shallow Blazed Grating

Institute for Microelectronics and Microsensors, Johannes Kepler University Linz, 4040 Linz, Austria
Presented at the Eurosensors 2017 Conference, Paris, France, 3–6 September 2017.
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Author to whom correspondence should be addressed.
Published: 23 August 2017
(This article belongs to the Proceedings of Eurosensors 2017)
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Abstract

In this work we investigate the coupling of radiation originating from a vertical-cavity enhanced thermal emitter (VERTE) into an optical waveguide, which can, for instance, act as a sensing element. We present full wave modelling results demonstrating highly efficient emitter-to-waveguide diffraction coupling at multiple angles using the previously designed VERTE together with a shallow blazed grating. It is shown that the coherent and dispersive thermal emission of the VERTE concept is well suited to achieve highly efficient and integrated mode coupling in the mid IR region.
Keywords: thermal emission; grating coupler; slab waveguide sensing thermal emission; grating coupler; slab waveguide sensing
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Pühringer, G.; Jakoby, B. Efficient Vertical-Cavity Mid-IR Thermal Radiation to Silicon-Slab Waveguide Coupling Using a Shallow Blazed Grating. Proceedings 2017, 1, 286.

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