서지주요정보
두 구조로 이루어진 이차원 광결정 도파로 = Two-dimensional hetero-structure photonic crystal waveguides
서명 / 저자 두 구조로 이루어진 이차원 광결정 도파로 = Two-dimensional hetero-structure photonic crystal waveguides / 황용섭.
저자명 황용섭 ; Hwang, Yong-Sop
발행사항 [대전 : 한국과학기술원, 2004].
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소장정보

등록번호

8014801

소장위치/청구기호

학술문화관(문화관) 보존서고

MPH 04003

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리뷰정보

초록정보

In photonic integrated circuits, there are various photonic devices. For example, several waveguides, cavities, channel drop filters and connecting parts for the fibers can be on one photonic integrated circuit. If there are two different devices, we must have an interface between them. Therefore we need to understand the interface phenomena of photonic devices. One of such interfaces is that of the hetero-structure photonic crystal waveguide(HS-PC-WG). We have studied the transmission properties of HS-PC-WG which consists of two different triangular lattice air hole structure photonic crystal waveguides. They have the same lattice constant but different radii. First, we get the band diagram of the guide modes for each waveguide by the plane wave expansion method. Then, we calculated the transmittance and the reflectance of HS-PC-WG's by the finite-difference time-domain method. And we also suggest a model to explain the transmittance and the reflectance caused by the hetero-structure. The model is based on the concept of the effective phase refractive index and the effective group refractive index. We show that the model agrees with the simulation results. We found that the model of effective phase refractive index shows the better agreement in the region where the wave transmits in both waveguides, while the model of effective group refractive index does in the region where the wave transmits in the first waveguide only. So the model may be helpful for the design of photonic integrated circuits. And we have also found that the reflection in HS-PC-WG's doesn't wholly occur exactly at the interface. The reflection occurs while the wave experiences several periodicities after the interface. Some possible explanations with the band diagrams are given. One possible application of HS-PC-WG is the band pass filter. For the guiding frequency region for both the first and the second waveguides, HS-PC-WG's have the transmittance nearly 1. For the frequency region guided only in the first waveguide, HS-PC-WG's have high reflectance. Therefore, HS-PC-WG's can be used as band pass filters with high performance.

서지기타정보

서지기타정보
청구기호 {MPH 04003
형태사항 viii, 39 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Yong-Sop Hwang
지도교수의 한글표기 : 김재은
지도교수의 영문표기 : Jae-Eun Kim
학위논문 학위논문(석사) - 한국과학기술원 : 물리학과,
서지주기 참고문헌 : p. 38-39
주제 광결정 도파로
다름구조
Photonic Crystal Waveguides
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