We have demonstrated a proof-of-concept for an athermal silicon slot waveguide using Ormocomp as a top cladding. Preliminarily theoretical and experimental results show that the slot waveguide geometry can completely cancel out its thermo-optical coefficient, by tailoring the optical mode overlap with silicon, silicon dioxide, and Ormocomp.
- silicon photonics
- integrated optics
- athermal waveguides
Fegadolli, W. S., Lira, H. L. R., Hiltunen, M., Karioja, P., Almeida, V. R., & Scherer, A. (2014). Athermal silicon slot waveguide with an ormocomp polymer overlayer. IEEE Photonics Technology Letters, 26(14), 1414-1417. https://doi.org/10.1109/LPT.2014.2326553