한국인터넷방송통신학회논문지 (The Journal of the Institute of Internet, Broadcasting and Communication)

  • 제12권5호
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  • Pages.55-60
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  • 2012
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  • 2289-0238(pISSN)
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  • 2289-0246(eISSN)
한국인터넷방송통신학회 (The Institute of Internet, Broadcasting and Communication)
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실리콘 도파로에 기초한 플리즈마 격자 구조형 방향성 결합기의 설계 및 분석

Design and Analysis of Plasmonic Grating-Assisted Directional Coupler based on Silicon Waveguide

  • 호광춘 (한성대학교 정보통신공학과)
  • Ho, Kwang-Chun (Dept. of Information and Communications Engineering, Hansung University)
  • 투고 : 2012.08.20
  • 심사 : 2012.10.12
  • 발행 : 2012.10.31
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초록

종방향 모드 전송선로 이론을 이용하여 실리콘 도파로에 기초한 플라즈마 격자 구조형 방향성 결합기의 최대 전력전송 특성을 정확하게 분석하였다. 정확한 해석적 수식과 기, 우 모드 사이의 간섭특성에 의존하는 결합효율을 정의하여 전파 거리에 따른 TE 모드의 전력변화를 수치해석 하였다. 수치해석 결과, 최대 전력전송은 P-GADC에서 전파하는 중첩모드들의 삽입손실이 서로 같은 격자주기 ${\Lambda}_{eq}=10.26{\mu}m$에서 발생하였다. 즉, GADC의 전형적인 최대 전력전송 조건인 위상정합 조건이나 최소간격 조건과 다른 결과를 나타내었다.

Longitudinal transmission-line modal theory is applied to analyze maximum power transfer in plasmonic grating-assisted directional couplers (P-GADC) based on silicon waveguide. By defining a coupling efficiency amenable to rigorous analytical solutions and interference between even and odd modes, the power exchange of TE modes as a function of propagation distance is evaluated. The numerical result reveals that maximum power transfer occurs at a grating period ${\Lambda}_{eq}=10.26{\mu}m$, in which the insertion loss of supermodes is equal to each other. That is, it is generally different from conventional phase-matching condition or minium gap condition of GADC.

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참고문헌

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