Reconfigurable opto-thermal graded-index waveguiding in bulk chalcogenide glasses

Soroush Shabahang, Nicholas S. Nye, Christos Markos, Demetrios N. Christodoulides, Ayman F. Abouraddy

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In the absence of suitable deposition processes, the fabrication of graded-index chalcogenide waveguides or fibers remains an outstanding challenge. Here, by exploiting the strong thermo-optic effect present in chalcogenide glasses, we experimentally demonstrate non-permanent optically-induced waveguides in bulk As2Se3 rods using a 1.55 mu m wavelength laser. This single-step process can be used not only to self-trap the writing beam, but also to guide another optical beam at a different wavelength in the opto-thermally inscribed waveguide channel. These results could pave the way towards harnessing nonlinear effects in graded-index chalcogenide guided settings. (C) 2017 Optical Society of America
Original languageEnglish
JournalOptics Letters
Issue number10
Pages (from-to)1919-1922
Publication statusPublished - 2017


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