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27 April 2009 Bragg gratings written in multimode borosilicate fibers using ultrafast infrared radiation and a phase mask
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Abstract
Inscription of Bragg grating structures is reported in inexpensive multimode borosilicate fibers using femtosecond pulse duration 800 nm infrared radiation and a phase mask. Thermal annealing of the gratings up to 700 °C reveals a behavior similar to Type I-IR gratings made in silica fiber with ultrafast infrared radiation. A portion of the index modulation of the grating is stable up to 500 °C. Below 100 °C, the wavelength shift of the Bragg grating is characterized by ~ 12 pm/°C slope. Above 300 °C, the wavelength shift is ~ 5 pm/°C.
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Dan Grobnic, Stephen J. Mihailov, and Christopher W. Smelser "Bragg gratings written in multimode borosilicate fibers using ultrafast infrared radiation and a phase mask", Proc. SPIE 7316, Fiber Optic Sensors and Applications VI, 73160D (27 April 2009); https://doi.org/10.1117/12.818194
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