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Updated: May 12, 2026
In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation
Published on: May 27, 2013
Broadband supercontinuum generation in As2Se3 chalcogenide wires by avoiding the two-photon absorption effects
Alaa Al-kadry1, Chams Baker, Mohammed El Amraoui
1Department of Electrical and Computer Engineering, McGill University, Montréal, Québec, Canada. alaa.al‑kadry@mail.mcgill.ca
Abstract:
We report the generation of a broadband supercontinuum (SC) spanning from 1260 to 2200 nm using a 10 cm long As2Se3 chalcogenide (ChG) wire pumped at a wavelength of 1550 nm. Such a wide SC in As2Se3 is obtained by avoiding the effects of two-photon absorption normally observed at a wavelength of 1550 nm. For this purpose, the pump soliton is initially self-frequency shifted toward longer wavelength by means of the Raman effect in standard silica fiber before being launched into the ChG wire for spectral broadening.
