Brillouin spectroscopy of a hybrid silicon-chalcogenide waveguide with geometrical variations
Abstract
Recent advances in design and fabrication of photonic-phononic waveguides have enabled stimulated Brillouin scattering (SBS) in silicon-based platforms, such as under-etched silicon waveguides and hybrid waveguides. Due to the sophisticated design and more importantly high sensitivity of the Brillouin resonances to geometrical variations in micro- and nano-scale structures, it is necessary to have access to the localized opto-acoustic response along those waveguides to monitor their uniformity and maximize their interaction strength. In this work, we design and fabricate photonic-phononic waveguides with a deliberate width variation on a hybrid silicon-chalcogenide photonic chip and confirm the effect of the geometrical variation on the localized Brillouin response using a distributed Brillouin measurement.
Keywords
Cite
@article{arxiv.1806.00140,
title = {Brillouin spectroscopy of a hybrid silicon-chalcogenide waveguide with geometrical variations},
author = {Atiyeh Zarifi and Birgit Stiller and Moritz Merklein and Yang Liu and Blair Morrison and Alvaro Casas-Bedoya and Gang Ren and Thach G. Nguyen and Khu Vu and Duk-Yong Choi and Arnan Mitchell and Stephen J. Madden and Benjamin J. Eggleton},
journal= {arXiv preprint arXiv:1806.00140},
year = {2018}
}
Comments
5 pages, 4 figures