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Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 36,
  • Issue 16,
  • pp. 3229-3235
  • (2018)

A Fast Method to Analyze the Fiber Amplifier With the GTWave Pumping Configuration

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Abstract

The pump propagation in the GTWave pumping structure is studied with analytical method and the beam propagation method (BPM). The power distribution function $f(\xi)=P_0(z)/[P_0(z)+P_1(z)]$ is proved to be independent of the fiber core size and the doping content. Based on this $f(\xi)$ function, the propagation of the pump power and the signal power in the fiber amplifier is quickly calculated. With our method, a BPM calculation on a long fiber can be simulated with a highly doped short fiber; thus, the total calculation time is greatly reduced. The analysis of a fiber amplifier with very complicated GTWave pumping configuration is greatly simplified and the calculation speed is accelerated without losing too much accuracy.

© 2018 IEEE

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