High power double -clad fiberamplifiers have widespread applications in fiber sensing, fiber optical communication system, spectral measurement, inertial confinement fusion, and so on.
高功率双包层光纤放大器在光纤传感、光纤通讯、光谱测量和惯性约束聚变等领域有广泛应用。
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Theory of fiberoptical parametric amplifiers (FOPAs) is introduced and the expression for the gain of FOPAs is deduced from the basic coupled wave equations.