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학술지 A Rigorous 2D Approximation Technique for 3D Waveguide Structures for BPM Calculations
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저자
한영탁, 신장욱, 김덕준, 박상호, 박윤정, 성희경
발행일
200312
출처
ETRI Journal, v.25 no.6, pp.535-537
ISSN
1225-6463
출판사
한국전자통신연구원 (ETRI)
DOI
https://dx.doi.org/10.4218/etrij.03.0203.0020
협약과제
03MB3600, 광엑세스용 광집적 모듈, 오광룡
초록
We propose a rigorous 2D approximation technique for the 3D waveguide structures; it can minimize the well-known approximation errors of the commonly used effective index method. The main concept of the proposed technique is to compensate for the effective cladding index in the equivalent slab model of the original channel waveguide from the modal effective index calculated by the nonuniform 2D finite difference method. With simulations, we used the proposed technique to calculate the coupling characteristics of a directional coupler by the 2D beam propagation method, and the results were almost exactly the same as the results calculated by the 3D beam propagation method.
KSP 제안 키워드
2D beam, Approximation errors, Approximation technique, Coupling Characteristics, Effective index method(EIM), Finite Difference method, Slab model, Waveguide Structure, beam propagation method, channel waveguide, directional coupler(DC)
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