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We report the first experimental observation of photosensitivity in As2Se3glass at a wavelength of 1550 nm. We utilize this photosensitivity to inducethe first Bragg gratings using a laser source at a wavelength of 1550 nm. Wequantify the photosensitivity thresholds related to exposition intensity andexposition time. Finally, we demonstrate that As2Se3 Bragg gratings are widelytunable in wavelength as the microwire can withstand an applied longitudinalstrain of 4 \times 104 \mu{\epsilon}.

Photosensitivity at 1550 nm and Bragg grating inscription in As2Se3 microwires