Near infrared light amplification in Gold diffused Silicon-on-Insulator   waveguides
  We report near infrared optical amplification in gold diffused silicon-on-insulator waveguides by visible optical pumping. More then 30dB/cm gain was measured for a light carrier at a wavelength of 1.55 microns 
S. Stepanov, S. Ruschin
physics.optics cond-mat.mtrl-sci