3D polymer-based air-bridge waveguides for on chip applications

Matej Goraus; Dusan Pudis; Ivan Martincek; Petra Urbancova

doi:10.1117/12.2518200

18 December 2018 3D polymer-based air-bridge waveguides for on chip applications

Matej Goraus, Dusan Pudis, Ivan Martincek, Petra Urbancova

Proceedings Volume 10976, 21st Czech-Polish-Slovak Optical Conference on Wave and Quantum Aspects of Contemporary Optics; 109760T (2018) https://doi.org/10.1117/12.2518200
Event: 21st Czech-Polish-Slovak Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 2018, Lednice, Czech Republic

Abstract

In this paper we proposed new concept for fabrication of 3D polymer waveguides with surface Bragg grating (SBG). For the structures fabrication we used 3D laser lithography based on direct laser writing process with nonlinear two-photon absorption in photosensitive material. High-resolution negative IP-Dip photoresist for the structure fabrication was used. The 3D photonic structure consists of supporting structure and waveguide with SBG. To improve the light guiding properties, waveguide part was isolated from the supporting structure by thin polymer pillars. The SBG parameters were numerically proposed by transfer matrix method to reflect narrow spectral band at 1.55 μm wavelength. Design of the proposed structure is suitable as a sensor for on-chip application for measurement of temperature or refractive index. Reflection characteristics of the SBG waveguide were measured with direct edge optical fiber coupling by optical spectrum analyzer. Quality of prepared structure was investigated by scanning electron microscope.

Citation Download Citation

Matej Goraus, Dusan Pudis, Ivan Martincek, and Petra Urbancova "3D polymer-based air-bridge waveguides for on chip applications", Proc. SPIE 10976, 21st Czech-Polish-Slovak Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 109760T (18 December 2018); https://doi.org/10.1117/12.2518200

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