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Physics > Optics

arXiv:1806.00140 (physics)
[Submitted on 31 May 2018]

Title:Brillouin spectroscopy of a hybrid silicon-chalcogenide waveguide with geometrical variations

Authors:Atiyeh Zarifi, Birgit Stiller, Moritz Merklein, Yang Liu, Blair Morrison, Alvaro Casas-Bedoya, Gang Ren, Thach G. Nguyen, Khu Vu, Duk-Yong Choi, Arnan Mitchell, Stephen J. Madden, Benjamin J. Eggleton
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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.
Comments: 5 pages, 4 figures
Subjects: Optics (physics.optics)
Cite as: arXiv:1806.00140 [physics.optics]
  (or arXiv:1806.00140v1 [physics.optics] for this version)
  https://doi.org/10.48550/arXiv.1806.00140
Related DOI: https://doi.org/10.1364/OL.43.003493

Submission history

From: Birgit Stiller [view email]
[v1] Thu, 31 May 2018 23:49:39 UTC (332 KB)
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