Anomalous transmission through near unit index contrast dielectric photonic crystals

1999 ◽  
Vol 86 (10) ◽  
pp. 5342-5347 ◽  
Author(s):  
P. Loschialpo ◽  
D. W. Forester ◽  
J. Schelleng
Keyword(s):  
Photonic Crystals ◽  
Index Contrast ◽  
Anomalous Transmission ◽  
Unit Index

Coupling Properties of Defect Modes in Organic Octagonal Quasiperiodic-Photonic-Crystals Under Low-Refractive-Index Contrast

2018 ◽  
Vol 38 (2) ◽  
pp. 0216003
Author(s):  
蔡园园 Cai Yuanyuan ◽  
王智 Wang Zhi ◽  
陈笑 Chen Xiao ◽  
李长伟 Li Changwei ◽  
冯帅 Feng Shuai ◽  
...  
Keyword(s):  
Refractive Index ◽  
Photonic Crystals ◽  
Defect Modes ◽  
Refractive Index Contrast ◽  
Index Contrast ◽  
Low Refractive Index

Experimental demonstration of self-collimation in low-index-contrast photonic crystals in the millimeter-wave regime

2005 ◽  
Vol 53 (4) ◽  
pp. 1362-1368 ◽  
Author(s):  
Zhaolin Lu ◽  
C.A. Schuetz ◽  
Shouyuan Shi ◽  
Caihua Chen ◽  
G.P. Behrmann ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Millimeter Wave ◽  
Experimental Demonstration ◽  
Wave Regime ◽  
Index Contrast

SELF-GUIDING IN LOW-INDEX-CONTRAST PLANAR PHOTONIC CRYSTALS

2004 ◽  
Vol 14 (03) ◽  
pp. 720-725
Author(s):  
CAIHUA CHEN ◽  
ZHAOLIN LU ◽  
SHOUYUAN SHI ◽  
DENNIS W. PRATHER
Keyword(s):  
Photonic Crystals ◽  
Light Cone ◽  
Total Internal Reflection ◽  
Photonic Band Gap ◽  
Contrast Material ◽  
Band Frequency ◽  
Plane Wave Method ◽  
Dispersion Engineering ◽  
Index Contrast ◽  
Photonic Band

This paper presents a new lateral confinement mechanism based on the self-collimation effect in planar photonic crystals (PhCs). In this mechanism, planar PhCs with approximately flat equifrequency contours (EFCs) are utilized for laterally confining the light and total internal reflection (TIR) is used for the vertical confinement. Since this mechanism relies on dispersion engineering, no photonic band gap nor defect modes are required. Using this approach, it is possible to engineer flat EFCs completely below the light cone using relatively low-index-contrast material systems. Therefore, in this work we first engineer a low-index-contrast planar PhC with approximately flat EFCs in the first band, which is always below the light cone. Then, we investigate the lateral divergence of self-guided beams in this structure using the plane wave method (PWM). It is found that light with a narrow band frequency in the first band can be very well self-confined laterally.

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