Novel optimized arithmetic for distributed pumped ytterbium-doped double-clad fiber amplifier

wang chun-can; zhang fan; lu yu-chun; geng rui; tong zhi; ning ti-gang; jian shui-sheng

Volume 18 Issue 09

Sep. 2006

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Article Navigation > High Power Laser and Particle Beams > 2006 > 18(09): 0-

zhou cheng, gao yan-xia, wang pei-ji. Analysis of second-harmonic conversion efficiency by type Ⅰ phase matching in uniaxial crystals[J]. High Power Laser and Particle Beams, 2008, 20.

Citation:

wang chun-can, zhang fan, lu yu-chun, et al. Novel optimized arithmetic for distributed pumped ytterbium-doped double-clad fiber amplifier[J]. High Power Laser and Particle Beams, 2006, 18.

zhou cheng, gao yan-xia, wang pei-ji. Analysis of second-harmonic conversion efficiency by type Ⅰ phase matching in uniaxial crystals[J]. High Power Laser and Particle Beams, 2008, 20.

Citation:

wang chun-can, zhang fan, lu yu-chun, et al. Novel optimized arithmetic for distributed pumped ytterbium-doped double-clad fiber amplifier[J]. High Power Laser and Particle Beams, 2006, 18.

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Novel optimized arithmetic for distributed pumped ytterbium-doped double-clad fiber amplifier

1.
Institute of Lightwave Technology,Beijing Jiaotong University,Beijing 100044,China

Publish Date: 2006-09-15

Abstract

Abstract

The time independent rate equations for fiber amplifier were solved by average inversion ratio iteration method. In this paper, a novel arithmetic based on genetic algorithm was proposed to optimize the distributed pump powers and the lengths of fiber segments in kilowatt YDDC fiber amplifier. The standard deviation of maximum temperatures in fiber segments was incorporated into evaluation function. This ensured that the maximum temperature in each fiber segment was identical. Based on the genetic algorithm method, the maximum temperature and standard deviation of maximum temperatures in seven-segment scheme were 126.34 ℃ and 1.95 ℃，compared to 147.12 ℃ and 21.37 ℃ without the optimization process. To eight-segment scheme, the optimized results were 119.76 ℃ and 2.12 ℃. The calculat
- ytterbium-doped double-clad fiber amplifier,
- heat effect,
- average inversion ratio,
- genetic algorithm

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