IEEE Photonics Technology Letters · 2007 · 34 citations · 11 references
Natural SciencesMaterials EngineeringMaterials ScienceOptical MaterialsOpticsPhotonicsFiber OpticsOptical FibersOptical GlassesRare-earth-doped MaterialsRefractive IndexUltrafast OpticsDoped Fiber MaterialsFemtosecond Laser PulsesFiber Bragg GratingsFiber-optic GlassesPhosphate GlassesRare Earth-doped GlassesRare-earth-doped GlassesThermal Stability
Bragg gratings made in heavily doped phosphate glass fibers using ultrafast infrared radiation and a phase mask are reported. Refractive indexes >1.5times10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-3</sup> were induced in Er-Yb-doped phosphate fiber in a few seconds of exposure corresponding to reflectivity above 99.99% for a 6-mm-long grating. Annealing test up to 400 degC shows good thermal stability of the grating structure
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Waveguide fabrication in phosphate glasses using femtosecond laser pulses
James W. Chan, Thomas Huser, Subhash H. Risbud et al. · Applied Physics Letters · 2003 · 182 citations