Theoretical Study of Directional Emission Enhancement From Photonic Crystal Waveguides With Tapered Exits

2008 ◽  
Vol 20 (20) ◽  
pp. 1682-1684 ◽  
Author(s):  
H. Kurt
Keyword(s):  
Photonic Crystal ◽  
Theoretical Study ◽  
Photonic Crystal Waveguides ◽  
Directional Emission ◽  
Emission Enhancement

scholarly journals Directional emission from photonic crystal waveguides

2006 ◽  
Vol 14 (6) ◽  
pp. 2423 ◽  
Author(s):  
Chii-Chang Chen ◽  
T. Pertsch ◽  
R. Iliew ◽  
F. Lederer ◽  
A. Tünnermann
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Waveguides ◽  
Directional Emission

scholarly journals Engineering of directional emission from photonic-crystal waveguides

2005 ◽  
Vol 86 (8) ◽  
pp. 081110 ◽  
Author(s):  
Steven K. Morrison ◽  
Yuri S. Kivshar
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Waveguides ◽  
Directional Emission

Highly Directional Emission from Photonic Crystal Waveguides of Subwavelength Width

2004 ◽  
Vol 92 (11) ◽  
Author(s):  
P. Kramper ◽  
M. Agio ◽  
C. M. Soukoulis ◽  
A. Birner ◽  
F. Müller ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Waveguides ◽  
Directional Emission

scholarly journals Time-reversal constraint limits unidirectional photon emission in slow-light photonic crystals

2016 ◽  
Vol 374 (2075) ◽  
pp. 20150263 ◽  
Author(s):  
Ben Lang ◽  
Daryl M. Beggs ◽  
Ruth Oulton
Keyword(s):  
Photonic Crystal ◽  
Time Reversal ◽  
Slow Light ◽  
Photon Emission ◽  
Light Regime ◽  
Photonic Crystal Waveguide ◽  
Photonic Crystal Waveguides ◽  
Matter Coupling ◽  
Directional Emission ◽  
Light Coupling

Photonic crystal waveguides are known to support C-points—point-like polarization singularities with local chirality. Such points can couple with dipole-like emitters to produce highly directional emission, from which spin-photon entanglers can be built. Much is made of the promise of using slow-light modes to enhance this light–matter coupling. Here we explore the transition from travelling to standing waves for two different photonic crystal waveguide designs. We find that time-reversal symmetry and the reciprocal nature of light places constraints on using C-points in the slow-light regime. We observe two distinctly different mechanisms through which this condition is satisfied in the two waveguides. In the waveguide designs, we consider a modest group velocity of v g ≈ c /10 is found to be the optimum for slow-light coupling to the C-points. This article is part of the themed issue ‘Unifying physics and technology in light of Maxwell's equations’.

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