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

Zarifi, A, Stiller, B, Merklein, M, Liu, Y, Morrison, B, Casas-Bedoya, A, Ren, G, Nguyen, T, Vu, K, Choi, D, Mitchell, A, Madden, S and Eggleton, B 2018, 'Brillouin spectroscopy of a hybrid silicon-chalcogenide waveguide with geometrical variations', Optics Letters, vol. 43, no. 15, pp. 3493-3496.


Document type: Journal Article
Collection: Journal Articles

Title Brillouin spectroscopy of a hybrid silicon-chalcogenide waveguide with geometrical variations
Author(s) Zarifi, A
Stiller, B
Merklein, M
Liu, Y
Morrison, B
Casas-Bedoya, A
Ren, G
Nguyen, T
Vu, K
Choi, D
Mitchell, A
Madden, S
Eggleton, B
Year 2018
Journal name Optics Letters
Volume number 43
Issue number 15
Start page 3493
End page 3496
Total pages 4
Publisher Optical Society of America
Abstract Recent advances in design and fabrication of photonic-phononic waveguides have enabled stimulated Brillouin scattering in silicon-based platforms such as underetched 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 Letter, 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.
Subject Photonics, Optoelectronics and Optical Communications
Photonics and Electro-Optical Engineering (excl. Communications)
Keyword(s) (290.5900) Scattering
stimulated Brillouin
(130.0130) Integrated optics
(280.4788) Optical sensing and sensors
DOI - identifier 10.1364/OL.43.003493
Copyright notice Journal © 2018 Optical Society of America
ISSN 1539-4794
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