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Erbium-doped fibre amplifiers with an extremely high gain coefficient of 11.0 dB/mW
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1990
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Optical MaterialsEngineeringOptical Transmission SystemLaser ApplicationsFiber LasersHigh-power LasersFiber-optic CommunicationOptical AmplifierOptical AmplificationOptical PropertiesLaser AmplifiersFiber LaserPhotonicsErbium-doped Fibre AmplifiersLaser MaterialsFiber OpticLow Erbium ConcentrationGain CoefficientActive FibersHigh Gain CoefficientOptoelectronicsLasersFibre Amplifier
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%.