Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Analysis of Laser Weldment Distortion in the EDFA LD Pump Packaging

광신호 증폭기 EDFA LD 펌프 패키징 레이저 용접부 변형 해석

  • Gang, Dae-Hyeon (Dept.of Mechanical Engineering, Graduate School of Chonnam National Universityisy) ;
  • Son, Gwang-Jae (Dept.of Mechanical Engineering, Graduate School of Chonnam National Universityisy) ;
  • Yang, Yeong-Su (Dept.of Mechanical Engineering, Chonnam National Universityisy)
  • 강대현 (전남대학교 대학원 기계공학과) ;
  • 손광재 (전남대학교 대학원 기계공학과) ;
  • 양영수 (전남대학교 기계공학과)
  • Published : 2001.01.01
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Abstract

This paper presents a study on heat transfer and residual distortion analysis of laser welded EDFA(Erbium Doped Fiber Amplifier) LD(Laser Diode) Pump using the finite element method. In the production process of LD Pump in light-wave communication system, ferrule and saddle are welded by Nd-YAG laser. These parts experience thermal and mechanical effect during heating and cooling cycle with the laser welding. Thus distortion happens in the laser-welded packaging, and it makes an error in detecting the light signal translate through optical fiber in LD Pump. The amount of final displacement produced by the laser welding is predicted using the finite element method. And the optimal shape of saddle is proposed with the results of numerical analyses to minimize the displacement.

Keywords

References

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