Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Modeling of Transmitting Light Irradiance Distribution of Step-index Multimode Optical Fiber

스텝 인덱스 멀티모드 광섬유의 투광 조도분포 모델링

  • Shin, Woo-Cheol (Department ol Mechanical Engineering, Chungnam National University) ;
  • Hong, Jun-Hee (Department ol Mechanical Engineering, Chungnam National University)
  • Published : 2006.04.01
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Abstract

This paper presents irradiance distribution model of light radiated from a step-index multimode optical fiber. The model is important in analysis of displacement response characteristics for intensity modulation type optical fiber sensors. The induced model was verified by experimental results. And the displacement response analysis result induced by using the irradiance distribution model was verified by experimental results and compared with using existing irradiance distribution models such as the constant model or the gaussian model. The experiment has better agreement with the analysis result using the induced model in this study than with the others models.

광강도 변조방식 광섬유 센서의 변위응답해석에 필요한 투광 조도분포를 수학적으로 모델링 하였다. 유도된 조도분포 모델은 스텝인덱스 멀티모드 광섬유를 대상으로 하며 실험적 검증을 통해 타당성을 확인하였다. 검증된 조도분포 모델을 적용하여 얻은 광섬유 센서의 변위응답 해석결과를 변위측정 결과와 비교하여 거의 일치함을 확인하였다. 또한 기존의 가우시안 조도분포 모델을 적용한 해석결과와 비교했을 때 제안한 조도분포 모델이 보다 정확한 결과를 나타냄을 보이고 있다.

Keywords

References

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