scholarly journals Highly efficient waveguide bends in photonic crystal with a low in-plane index contrast

2003 ◽  
Vol 11 (24) ◽  
pp. 3284 ◽  
Author(s):  
M. Augustin ◽  
H.-J. Fuchs ◽  
D. Schelle ◽  
E.-B. Kley ◽  
S. Nolte ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Highly Efficient ◽  
Waveguide Bends ◽  
Index Contrast

Highly efficient waveguide bends in low in-plane index contrast photonic crystals

2004 ◽  
Author(s):  
Markus Augustin ◽  
Rumen Iliew ◽  
Hans-Joerg Fuchs ◽  
Ulf Peschel ◽  
Ernst-Bernhard Kley ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Highly Efficient ◽  
Waveguide Bends ◽  
Index Contrast

OPTICAL GAIN AND ENERGY BAND STRUCTURE OF PHOTONIC CRYSTAL VCSELs WITH HIGH-INDEX-CONTRAST SUBWAVELENGTH GRATINGS

2014 ◽  
Vol 02 (02) ◽  
pp. 1440014
Author(s):  
J. CHEN ◽  
W. J. FAN ◽  
Q. J. WANG ◽  
MARCIN GEBSKI ◽  
MACIEJ DEMS ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Quantum Wells ◽  
Optical Gain ◽  
High Index ◽  
Cavity Surface ◽  
Subwavelength Gratings ◽  
Vertical Cavity Surface ◽  
Index Contrast ◽  
High Index Contrast ◽  
Valence Bands

Photonic crystal vertical-cavity surface-emitting laser structure with incorporation of high-index-contrast subwavelength gratings is fabricated and the three quantum well active region of the structure is investigated with 8 band k.p model. The dispersion of energy sub-bands and wave functions in the conduction bands and valence bands indicate that effective overlapping and interactions between electrons and holes can be realized in the quantum wells and that the maximum spontaneous emission rate and optical gain occurs at the expected wavelength, which is confirmed by the measured photoluminescence spectrum.

Superprism phenomena in 2 D low index contrast polymer photonic crystal

2007 ◽  
Author(s):  
Li Wang ◽  
Wei Jiang ◽  
Xiaonan Chen ◽  
Jiaqi Chen ◽  
Sasa Zhang ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Index Contrast

Dispersion Properties of Photonic Crystal Fibers - Issues and Opportunities

2003 ◽  
Vol 797 ◽  
Author(s):  
J. Lægsgaard ◽  
S. E. Barkou Libori ◽  
K. Hougaard ◽  
J. Riishede ◽  
T. T. Larsen ◽  
...  
Keyword(s):  
Refractive Index ◽  
Photonic Crystal ◽  
Optical Fibers ◽  
Photonic Crystal Fibers ◽  
Complex Refractive Index ◽  
Dispersion Properties ◽  
Guided Mode ◽  
Index Contrast ◽  
Mode Group ◽  
Crystal Fibers

ABSTRACTThe dispersion, which expresses the variation with wavelength of the guided-mode group velocity, is one of the most important properties of optical fibers. Photonic crystal fibers (PCFs) offer much larger flexibility than conventional fibers with respect to tailoring of the dispersion curve. This is partly due to the large refractive-index contrast available in silica/air microstructures, and partly due to the possibility of making complex refractive-index structures over the fiber cross section. We discuss the fundamental physical mechanisms determining the dispersion properties of PCFs guiding by either total internal reflection or photonic bandgap effects, and use these insights to outline design principles and generic behaviours of various types of PCFs. A number of examples from recent modeling and experimental work serve to illustrate our general conclusions.

Ultra thin high index contrast photonic crystal slabs in lithium niobate

2010 ◽  
Vol 33 (1) ◽  
pp. 19-21 ◽  
Author(s):  
Holger Hartung ◽  
Ernst-Bernhard Kley ◽  
Thomas Gischkat ◽  
Frank Schrempel ◽  
Werner Wesch ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Lithium Niobate ◽  
High Index ◽  
Photonic Crystal Slabs ◽  
Index Contrast ◽  
High Index Contrast
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