Journal of the Institute of Electronics Engineers of Korea SD (대한전자공학회논문지SD)

The Institute of Electronics and Information Engineers (대한전자공학회)
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A Simple Analytic Method of Optical DFB Waveguides with Quarter-Wavelength Shifted Region

${\lambda}$/4 천이영역을 갖는 광 DFB도파로의 해석적 분석법

  • Kim, June-Hwan (Samsung Advanced Institute of Technology) ;
  • Ho, Kwang-Chun (Hansung University, Dept. of Information and Communication Eng.)
  • Published : 2001.12.01
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Abstract

We evaluate the optical characteristics of planar distributed feedback (DFB) waveguides with quarter-wavelength phase-shifter. To analyze explicitly its band-pass and resonance properties, we present and newly develop a modal transmission-line theory (MTLT) based on Floquet's theorem and Babinet's principle. The numerical results reveal that this approach offers a simple and analytic algorithm to analyze either the filtering or the oscillating characteristic of DFB gratings with quarter-wavelength phase-shifter, and has a novel physical insight that may not be achieved in other approximating approaches

${\lambda}$/4 천이영역을 갖는 평면 DFB 도파로의 광학적특성을 분석하였다. 그 도파로의 필터특성과 공진특성을 정확히 분석하기 위하여 Floquet 이론과 Babinet 원리에 기초한 새로운 모드 전송선로 이론을 유도하였다. 수치해석 결과, 본 논문에서 제시한 해석법은 ${\lambda}$/4 천이영역을 갖는 평면 DFB 도파로의 필터 특성과 공진특성을 간단히 해석할 수 있는 알고리즘을 제공하며, 다른 근사적 해석법들에서 얻을 수 없는 새로운 물리적 특성을 보여 주었다.

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References

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