Propagating Characteristics and Applications of Parallel Photonic Crystal Waveguides
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Propagating Characteristics and Applications of Parallel Photonic Crystal Waveguides
Chinese Journal of LuminescenceVol. 30, Issue 5, Pages: 673-677(2009)
作者机构:
长江大学 物理科学与技术学院,湖北 荆州,434023
作者简介:
基金信息:
DOI:
CLC:O431.1;TN256
Received:25 May 2009,
Revised:02 January 1900,
Published Online:30 October 2009,
Published:30 October 2009
稿件说明:
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WU Yao-de, LI Ji-jun, CHEN Hai-yan. Propagating Characteristics and Applications of Parallel Photonic Crystal Waveguides[J]. Chinese journal of luminescence, 2009, 30(5): 673-677.
DOI:
WU Yao-de, LI Ji-jun, CHEN Hai-yan. Propagating Characteristics and Applications of Parallel Photonic Crystal Waveguides[J]. Chinese journal of luminescence, 2009, 30(5): 673-677.DOI:
Propagating Characteristics and Applications of Parallel Photonic Crystal Waveguides
The propagating characteristics and mode profiles of two parallel photonic crystal waveguides were studied by using finite-difference time-domain method (FDTD)
and the coupling coefficient between the two parallel photonic crystal waveguides was obtained with coupled-mode theory. Numerical results demonstrated that the coupling characteristic between the two parallel photonic crystal waveguides reveals large discrimination within different frequency region. For a high frequency range of (0.32~0.44)(
ωa
/2π
c
)
they exchange energy each other and optical coupling is realized
the coupling coefficient decreases with the increase of input frequency; while at a low frequency range of (0.29~0.32)(
ωa
/2π
c
)
the mode profiles of the two waveguides are overlapped. Finally
A solution realizing optical beam splitter and optical power equalizer is proposed using a certain coupling length of 34
a
the two incident waves with high frequencies of 0.333(
ωa
/2π
c
) and 0.357(
ωa
/2π
c
)can be split
meanwhile the wave power with arbitrary frequency at low frequency can be equalized within the two waveguides.
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Keywords
references
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