한국광학회지 (Korean Journal of Optics and Photonics)

  • 제16권3호
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  • Pages.261-265
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  • 2005
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  • 1225-6285(pISSN)
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  • 2287-321X(eISSN)
한국광학회 (Optical Society of Korea)
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최대 광밴드갭을 위한 2차원 광결정 구조

Polarization-Independent 2-Dimensional Photonic Crystal Structure for Maximum Bandgap

  • 성준호 (인하대학교 정보통신공학부) ;
  • 오범환 (인하대학교 정보통신공학부) ;
  • 이승걸 (인하대학교 정보통신공학부) ;
  • 박세근 (인하대학교 정보통신공학부) ;
  • 이일항 (인하대학교 정보통신공학부)
  • Sung, Jun-Ho (Optics and Photonics Ellite Research Academy (OPERA), School of Information & Communication Engineering, INHA University) ;
  • O, Beom-Hoan (Optics and Photonics Ellite Research Academy (OPERA), School of Information & Communication Engineering, INHA University) ;
  • Lee, Seung-Gol (Optics and Photonics Ellite Research Academy (OPERA), School of Information & Communication Engineering, INHA University) ;
  • Park, Se-Geun (Optics and Photonics Ellite Research Academy (OPERA), School of Information & Communication Engineering, INHA University) ;
  • Lee, El-Hang (Optics and Photonics Ellite Research Academy (OPERA), School of Information & Communication Engineering, INHA University)
  • 발행 : 2005.06.01
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⟨ 이전 논문 다음 논문 ⟩

초록

광자결정의 밴드갭이 크면서도 모든 편광방향에 대해 동일하게 설계될 수 있다면, 이러한 광밴드갭은 다양한 소자의 응용에 있어 보다 유용해 질 수 있다. 현재까지는 원형의 공기구멍으로 이루어진 삼각격자 구조가 가장 큰 광밴드갭을 갖는 것으로 알려져 왔으나, 본 논문에서는 각종 구조적 변화에 의한 밴드갭의 변화경향을 분석하고 체계화함에 따라, 모든 편광방향에 대해 광밴드갭이 동일하면서 가장 크게 되는 새로운 격자구조를 제안하였다. 이 구조의 광밴드갭 비율$(\Delta\omega/\omega)$은 기존의 삼각격자에 비해 약 $30\%$ 정도 증대된 것임을 확인하였다.

The large and polarization-independent photonic bandgap (PBG) is very useful to the application to various optical devices. Until present, it has been known that the PBG for a triangular lattice remains the largest both in the E- and H-polarized modes. However, we proposed a new structure with a larger polarization-independent PBG, by analyzing and systemizing the PBG opening trends as the structural changes. This optimal structure for maximum bandgap has more increased gap-midgap ratio $(\Delta\omega/\omega)$ of about $30\%$ than the triangular lattice.

키워드

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