Sergei Firstov

Generation and power amplification of 1.4-μm ultra-broadband noise-like pulses using a bismuth-doped germanosilicate fiber laser and amplifier

The 1.4–1.5 μm spectral region is attractive for water‑absorption‑related photonic applications and E- and S-band optical communication systems, but suitable silica-compatible gain media remain limited. We developed a single-mode, low-germanium bismuth-doped germanosilicate fiber...