Design of a New Taper for Light Coupling Between a Ridge Waveguide and a Photonic Crystal Waveguide

2003 ◽  
Vol 797 ◽  
Author(s):  
Cécile Jamois ◽  
Torsten Geppert ◽  
Ralf B. Wehrspohn
Keyword(s):  
Photonic Crystal ◽  
Light Propagation ◽  
Mode Conversion ◽  
Coupling Efficiency ◽  
Ridge Waveguide ◽  
Band Structure Calculations ◽  
Light Coupling ◽  
Good Improvement ◽  
Structure Calculations ◽  
Adiabatic Mode

ABSTRACTWe propose the design of a new taper to improve light coupling between a photonic-crystal-based W1 waveguide and a ridge waveguide of similar width. The taper design is directly deduced from band structure calculations and allows an adiabatic mode conversion. The comparison between light propagation from the ridge waveguide through the W1 waveguide and through the taper, respectively, shows good improvement of the coupling efficiency.

Improved combined wave number eigenvalue equations method for band structure calculations of metal photonic crystal

2012 ◽  
Vol 285 (7) ◽  
pp. 1859-1863 ◽  
Author(s):  
Bin Jiang ◽  
Wenjun Zhou ◽  
Anjin Liu ◽  
Wei Chen ◽  
Wanhua Zheng
Keyword(s):  
Photonic Crystal ◽  
Band Structure ◽  
Wave Number ◽  
Band Structure Calculations ◽  
Structure Calculations

Photonic Crystal Tapers for Coupling Large Ridge Waveguides to Photonic Crystal Waveguides

2003 ◽  
Vol 797 ◽  
Author(s):  
Francis C. Ndi ◽  
Jean Toulouse
Keyword(s):  
Photonic Crystal ◽  
Triangular Lattice ◽  
Coupling Efficiency ◽  
Ridge Waveguide ◽  
Photonic Crystal Waveguide ◽  
Photonic Crystal Waveguides ◽  
Taper Angle ◽  
Dimensional Photonic Crystal ◽  
Ridge Waveguides ◽  
Small Footprint

ABSTRACTWe present a study of various photonic crystal taper structures each characterized by the taper angle and roughness for coupling light into 2-dimensional photonic crystal waveguides from large ridge waveguides. The photonic crystal waveguide is made of a triangular lattice of holes in a dielectric. The objective is to find a taper structure that offers the best coupling efficiency over a range of widths of the ridge waveguide while leaving a small footprint. We show that such a structure indeed exists and can be further optimized as the width of the ridge waveguide gets even larger leading to more than 90% increase in coupling efficiency in some cases.

scholarly journals Fermi surface of the skutterudite CoSb3 : Quantum oscillations and band-structure calculations

2021 ◽  
Vol 103 (8) ◽  
Author(s):  
M. Naumann ◽  
P. Mokhtari ◽  
Z. Medvecka ◽  
F. Arnold ◽  
M. Pillaca ◽  
...  
Keyword(s):  
Band Structure ◽  
Fermi Surface ◽  
Quantum Oscillations ◽  
Band Structure Calculations ◽  
Structure Calculations

Extrinsic photonic band structure calculations of a doped semiconductor under an external magnetic field

2008 ◽  
Vol 372 (31) ◽  
pp. 5224-5228 ◽  
Author(s):  
Renlong Zhou ◽  
Xuewen Wang ◽  
Bingju Zhou ◽  
Yongyi Gao ◽  
Xiaojuan Liu ◽  
...  
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Band Structure ◽  
Photonic Band Structure ◽  
Band Structure Calculations ◽  
Photonic Band ◽  
Structure Calculations
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