Thulium-doped silica-based optical fibers for cladding pumped fiber amplifiers

Pavel Peterka (1) , Václav Kubeček (2) , Ivan Kašík (1) , Vlastimil Matějec (1) , Wilfried Blanc (3) , Basile Faure (3) , Bernard Dussardier (3) , Gérard Monnom (3)

1 UFE / CAS - Institute of Photonics and Electronics of the Czech Academy of Sciences
2 FJFI CTU - Faculty of Nuclear Sciences and Physical Engineering [Prague]
3 LPMC - Laboratoire de physique de la matière condensée

We present preparation and spectroscopic characterization of the Tm-doped fibers with enhanced 3H4 fluorescence lifetime thanks to codoping with alumina. With the alumina content of 10 mol %, the fluorescence lifetime of 58 μs was achieved. Using experimentally obtained fiber characteristics, we used numerical simulations to study and optimize for the first time the thulium-doped fiber amplifier (TDFA) with dual wavelength (800 + 1400 nm) pumping scheme where the pump at 800 nm propagates in the cladding and the other pump propagates in the core. The results are compared with numerical simulations of TDFA pumped at single-wavelength in the 1050 nm band.

Mots clés: fiber lasers; fiber amplifiers; thulium

Domaines: Optique [physics.optics]

Pavel Peterka, Václav Kubeček, Ivan Kašík, Vlastimil Matějec, Wilfried Blanc, et al.. Thulium-doped silica-based optical fibers for cladding pumped fiber amplifiers. Optical Materials, 2007, 30 (1), pp.174-176. ⟨10.1016/j.optmat.2006.11.039⟩. ⟨hal-00459466⟩