The present investigation discusses the advantage of using RE-ion-doped (Nd3+, Tm3+, and Er3+) TeO2 glasses for developing fiber and planar broadband amplifiers and lasers. The spectroscopy of RE-ion-doped fibers and glasses is discussed along with the thermal properties of glass hosts. The results of emission from the 3H4 level in single-mode Tm3+-doped tellurite fiber show that the emission band overlaps with Er3+ emission from the 4I13/2 level and Nd3+ emission from the 4F3/2 level in silicate and tellurite glasses, thereby enabling the development of amplifiers and lasers between 1350 and 1650 nm. Recent results using Z-scan measurements of nonlinear refractive index and absorption demonstrate that the third-order nonlinearity in undoped TeO2 glasses is of the order of 2 × 10-15 to 3 × 10-15 cm2·W-1 between 1300 and 1550 nm. These results are briefly discussed in view of an amplifier operation combined with ultrafast all-optical switching.
|Number of pages||5|
|Journal||Journal of the American Ceramic Society|
|Publication status||Published - Jun 2002|