Soliton self-frequency shift in tellurite microstructured fiber

摘要

We report broad near-infrared soliton source generation in a TeO2-Bi_2O3-ZnO-Na_2O tellurite microstructured optical fiber pumped by a 1557 nm femtosecond fiber laser. A continuous soliton wavelength shift from 1582 nm to 1851 nm was realized through a tellurite microstructured optical fiber as short as 6.5 cm. Experimental results are in good agreement with the numerical simulations using a generalized nonlinear Schrodinger equation. In addition, an analytical description of the Raman response function of tellurite glass is provided, and a Raman contribution factor of 0.51 is obtained from the actual Raman gain spectrum.