scholarly journals High-Transmission-Efficiency 120 $^{\circ}$ Photonic Crystal Waveguide Bend by Using Flexible Structural Defects

2014 ◽  
Vol 6 (4) ◽  
pp. 1-10 ◽  
Author(s):  
D. C. Tee ◽  
N. Tamchek ◽  
M. H. Abu Bakar ◽  
F. R. Mahamd Adikan
Keyword(s):  
Photonic Crystal ◽  
Transmission Efficiency ◽  
Structural Defects ◽  
Photonic Crystal Waveguide ◽  
High Transmission ◽  
Waveguide Bend

MODE ANALYSIS AND SYSTEMATICAL DESIGN OF WIDE-BANDWIDTH PHOTONIC CRYSTAL 60° WAVEGUIDE BENDS WITH HIGH TRANSMISSION

2012 ◽  
Vol 26 (26) ◽  
pp. 1250170 ◽  
Author(s):  
TAO CHEN ◽  
CAILONG ZHENG ◽  
JINXING LI
Keyword(s):  
Photonic Crystal ◽  
Expansion Method ◽  
Transmission Efficiency ◽  
Slab Waveguide ◽  
Mode Analysis ◽  
Two Dimensional ◽  
Photonic Crystal Slab ◽  
High Transmission ◽  
Index Approach ◽  
Waveguide Bend

We present a procedure to enhance the transmission efficiency of a photonic crystal slab waveguide bend by introducing an air hole with the same radius at the center of bend and optimizing the positions of three neighboring holes in the corner. The improvement relies only on the method of displacing holes which is technologically preferred to controlling variations in hole size or shape. We employ the effective refractive index approach and two-dimensional plane wave expansion method to analyze the guide modes of the straight waveguide and waveguide bend. The transmission character of bent waveguides is investigated using two-dimensional finite-difference time-domain method. Numerical studies demonstrate that the approximate method of mode analysis is unsuitable to our model. Alternatively, we systematically study the effect of different positions of the holes on the transmission. The optimized bends for the high transmission with broad bandwidth are proposed.

High transmission and single-mode operation in low-index-contrast photonic crystal waveguide devices

2004 ◽  
Vol 84 (5) ◽  
pp. 663-665 ◽  
Author(s):  
M. Augustin ◽  
H.-J. Fuchs ◽  
D. Schelle ◽  
E.-B. Kley ◽  
S. Nolte ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Single Mode ◽  
Photonic Crystal Waveguide ◽  
Single Mode Operation ◽  
High Transmission ◽  
Mode Operation ◽  
Waveguide Devices ◽  
Index Contrast

Structure Tuned, High Transmission 180$^{\circ}$ Waveguide Bend in 2-D Planar Photonic Crystal

2013 ◽  
Vol 25 (15) ◽  
pp. 1443-1446 ◽  
Author(s):  
Din Chai Tee ◽  
Yu Gang Shee ◽  
Nizam Tamchek ◽  
Faisal Rafiq Mahamd Adikan
Keyword(s):  
Photonic Crystal ◽  
High Transmission ◽  
Waveguide Bend

Research of Coupling Structure between Photonic Crystal Waveguide and Dielectric Taper Waveguide

2012 ◽  
Vol 503 ◽  
pp. 139-144
Author(s):  
Xiao Yuan Ren ◽  
Li Shuang Feng ◽  
Zhen Zhou ◽  
Huai Yong Yu ◽  
Xue Wen Deng
Keyword(s):  
Photonic Crystal ◽  
Transmission Efficiency ◽  
Triangular Array ◽  
Output Port ◽  
Photonic Crystal Waveguide ◽  
Input And Output ◽  
Coupling Structure

There are two types of coupling structures for the photonic crystal of triangular array of air holes. The two types of coupling structure between dielectric taper waveguide(DTW) and photonic crystal waveguide(PCW) is investigated. The coupling transmission efficiency is calculated for different coupling structure of the input and output, we found that the coupling transmission efficiency is changed with different coupling width and distance. The highest transmission efficiency is 92.6% and 99.6% for the input and output port respectively.

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