We demonstrate the capability for amplification of picosecond pulses in two bismuth-doped alumosilicate fibers. A spectrally filtered supercontinuum source is used to provide a train of picosecond pulses at discrete wavelengths within the gain bandwidth of bismuth fiber amplifiers. With a $30\mathrm{m}$ length of active fiber, a small signal gain at $1160\mathrm{nm}$ of over $20\mathrm{dB}$ is observed. In addition, we assess the viability of amplification of high repetition rate signals in such amplifiers, applying a $10\mathrm{GHz}$ modulation to a continuous wave Raman fiber laser operating at $1178\mathrm{nm}$ , finding that such signals are amplified without noticeable distortion.