Theoretical study on the propagation of self-collimated beams in two-dimensional photonic crystals = 2차원 광결정 내에서 자기조준되는 빛의 전파에 대한 이론 연구

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We have investigated the propagation of self-collimated beams in two dimensional photonic crystals using the plane wave expansion method and the FDTD simulations. We have verified that self-collimated propagation is achieved at the flat region on the equi-frequency contour, and the self-collimated beam undergoes sharp 90˚ bending through (10) photonic crystal-air interface. However, a novel discovery is that by introducing a line defect, we can obtain a beam splitting phenomena .Furthermore, we have demonstrated that by varying the radius of defect rods $γ_d$, we can divide an input beam into two output beams with an arbitrary power ratio. Then using this beam into many output beams with the same power. Also the fact is verified that the adjacent or crossed self-collimated beams do not couple each other.
Advisors
Park, Hae-Yongresearcher박해용researcher
Description
한국과학기술원 : 물리학과,
Publisher
한국과학기술원
Issue Date
2004
Identifier
240281/325007  / 020023424
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 물리학과, 2004.8, [ v, 28 p. ]

Keywords

SBS; 플라즈마파형; 광결정; pre-pulse; waveform; 전단펄스; pulse shape; Photonic crystallasmascattering

URI
http://hdl.handle.net/10203/48678
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=240281&flag=dissertation
Appears in Collection
PH-Theses_Master(석사논문)
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