Journal of the Korean Institute of Illuminating and Electrical Installation Engineers (조명전기설비학회논문지)

The Korean Institute of IIIuminating and Electrical Installation Engineers (한국조명전기설비학회)
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Missing Modes in Fabry-Perot Laser Diodes

Fabry-Perot 레이저 다이오드의 Missing Mode

  • Published : 2005.01.01
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Abstract

Mode missing of Fabry-Perot laser diodes has been modeled using the time domain laser model(TDLM). Fabry-Perot laser diodes that have structure of ripple in the waveguide of active layer or defects inside the active layer were simulated. For accurate simulation, the nonlinear effects were included such as spatial hole burning(SHB) and gain saturation. From the simulation results, it was founded that the defect inside the active layer in laser diodes has a strong influence on mode missing rather than the waveguide ripple. The simulation results are confirmed with the fabricated Fabry-Perot laser diodes by measuring the longitudinal mode spectra as a function of temperature from $25[^{\circ}C]\;to\;85[^{\circ}C]$.

Fabry-Perot 레이저 다이오드의 missing mode의 원인으로 의심되는 활성층 내의 구조적 결함과 리플의 영향을 TDLM(time domain laser model)방식을 사용하여 모델링하였다. 보다 정확한 모델링의 결과를 얻기 위하여 여러가지 비선형 효과를 추가 고려하였다. 이를 이용하여 레이저 다이오드를 시뮬레이션하였고, 모드 스펙트럼(mode spectrum)을 구하였다. 실제 레이저 다이오드의 missing mode를 측정하기 위한 실험 장비를 구성하여 측정 결과를 추출하였고, 시뮬레이션과 측정 실험 결과로부터 결론을 내렸다.

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References

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