Journal of the Korean Institute of Telematics and Electronics D (전자공학회논문지D)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Modal Transmission-Line Theoy of Planar Optical Couplers in Optical Communication

광통신용 광 결합기의 모드 전송선로 해석법

  • 호광춘 (한라공과대학교 전기전자공학부) ;
  • 김준환 (건국대학교 전기전자공학부) ;
  • 김영권 (건국대학교 전기전자공학부)
  • Published : 1998.07.01
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Abstract

Modal transmission-line is utilized to analyze the power coupling of optical directional coupler composed by two parallel guiding slabs. By defining a coupling efficiency .eta. amenable to rigorous supermodes and boundary conditions of modal functions, we evaluate the power transfer for TE mode of gainy coupler. The results reveal that optimized power exchange occurs at a novel wavelength .lambda.$_{op}$ , which is generally different from minimum gap .lambda.$_{min}$ between rigorous modes and phase-matching condition .lambda.$_{ph}$ .

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