1.47 µm Tm-doped fluoride fiber amplifier and fiber laser using a 1.064 µm upconversion pumping scheme

Abstract

Optical fiber amplifiers operating at 1.5 µm (Erbium doped fiber) and 1.3 µm(Neodymium or Praseodymium doped fluoride fiber) are now being studied very actively because they play important roles in optical communication systems. Although a 1.4 µm band optical fiber amplifier has yet to be studied, it is of great interest because a 1.4 µm band transmission system would be useful in transmission line monitoring systems. We have successfully demonstrated an upconversion pumped Tm-doped fiber amplifier and laser operating at 1.47 µm[1],[2].