Demonstration of Anomalous Dispersion in a Solid, Silica-based Fiber at λ < 1300 nm

We demonstrate the first all-solid (non-holey), silica-based fiber with anomalous-dispersion (+60ps/nm-km) at wavelengths (1080nm) where silica material dispersion is negative. We demonstrate its functionality as a critical enabler for an all-fiber, Yb-based, femtosecond ring laser.