抄録
We measured the optical gain properties of Bi-doped silica glass at 1.3μm with 0.8-μm excitation, and demonstrated the maximum gain coefficient of 0.80 cm -1, with 0.77-W excitation. Since there was low loss at 1.3μm in the sample, the gain was a net gain. These results indicate that Bi-doped silica glass can work as a core material of optical fiber amplifiers at 1.3μm, the zero-dispersion wavelength.
