Design of an efficient mid-wave IR fiber optic light source
  Design of a mid-wave IR broadband (3.1 - 3.8 {\mu}m) fiber-based light source exploiting FWM in a meter long suitably designed chalcogenide microstructured fiber is reported. An achievable gain more than 35 dB is demonstrated. 
A. Barh, S. Ghosh, R. K. Varshney, and B. P. Pal
physics.optics