Electronics Letters · 1990 · 67 citations · 0 references
EngineeringElectrical EngineeringOpticsOptoelectronicsPhotonicsFiber OpticsLaser DiodesOptical AmplifiersOptical FibersRare-earth-doped MaterialsSemiconductor LasersErbium-doped Fiber AmplifiersGainOptical GainOptical Gain MaterialsRare-earth-doped AmplifiersRare-earth-doped Fibers
A gain coefficient of 11.0 dB/mW is obtained using 0.98 μm laser diode pumped erbium-doped fibre amplifiers with a low erbium concentration of 81 ppm and a high relative refractive index difference of 1.88%.