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

Atiyeh Zarifi; Birgit Stiller; Moritz Merklein; L. I.U. Yang; Blair Morrison; Alvaro Casas-Bedoya; R. E.N. Guanghui; Thach G. Nguyen; V. U. Khu; Duk Yong Choi; Arnan Mitchell; Steven J. Madden; Benjamin J. Eggleton

doi:10.1364/OL.43.003493

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

Atiyeh Zarifi^*, Birgit Stiller, Moritz Merklein, L. I.U. Yang, Blair Morrison, Alvaro Casas-Bedoya, R. E.N. Guanghui, Thach G. Nguyen, V. U. Khu, Duk Yong Choi, Arnan Mitchell, Steven J. Madden, Benjamin J. Eggleton

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

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.

Original language	English
Pages (from-to)	3493-3496
Number of pages	4
Journal	Optics Letters
Volume	43
Issue number	15
DOIs	https://doi.org/10.1364/OL.43.003493
Publication status	Published - 1 Aug 2018

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title = "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 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.",

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AU - Zarifi, Atiyeh

AU - Stiller, Birgit

AU - Merklein, Moritz

AU - Yang, L. I.U.

AU - Morrison, Blair

AU - Casas-Bedoya, Alvaro

AU - Guanghui, R. E.N.

AU - Nguyen, Thach G.

AU - Khu, V. U.

AU - Choi, Duk Yong

AU - Mitchell, Arnan

AU - Madden, Steven J.

AU - Eggleton, Benjamin J.

PY - 2018/8/1

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N2 - 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.

AB - 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.

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JO - Optics Letters

JF - Optics Letters

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

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