Light propagation through two-dimensional photonic crystal slab waveguide bends solved by three-dimensional plane-wave transfer-matrix method

2009 ◽  
Vol 26 (3) ◽  
pp. 493 ◽  
Author(s):  
Ming Che ◽  
Zhi-Yuan Li
2010 ◽  
Vol 19 (04) ◽  
pp. 543-550 ◽  
Author(s):  
YOSHINORI WATANABE ◽  
NAOKI IKEDA ◽  
YOSHIAKI TAKATA ◽  
YOSHINORI KITAGAWA ◽  
NOBUHIKO OZAKI ◽  
...  

A directional coupler in a two-dimensional photonic crystal slab waveguide was optimized to operate in wideband by applying topology optimized bends at input/output ports. We fabricated the sample based on the optimized design and demonstrated that the directional coupler performs properly in the transmittance and the bandwidth comparable to the straight waveguide. We experimentally confirmed the excellent extinction ratio (12 ~ 15dB) of bar and cross port.


2004 ◽  
Vol 84 (23) ◽  
pp. 4690-4692 ◽  
Author(s):  
Takashi Asano ◽  
Kazuaki Kiyota ◽  
Daisuke Kumamoto ◽  
Bong-Shik Song ◽  
Susumu Noda

2001 ◽  
Vol 692 ◽  
Author(s):  
Shanhui Fan ◽  
J. D. Joannopoulos

AbstractWe present three-dimensional analysis of two-dimensional guided resonances in photonic crystal slab structures. This analysis leads to a new understanding of the complex spectral properties of such systems. Specifically, we calculate the dispersion diagrams, the modal patterns, and transmission and reflection spectra of these resonances. From these calculations, a key observation emerges involving the presence of two temporal pathways for transmission and reflection processes. Using this insight, we introduce a general physical model that explains the essential features of complex spectral properties. Finally, we show that the quality factors of these resonances are strongly influenced by the symmetry of the modes, and the strength of the index modulation.


Nature ◽  
2000 ◽  
Vol 407 (6807) ◽  
pp. 983-986 ◽  
Author(s):  
Edmond Chow ◽  
S.Y. Lin ◽  
S.G. Johnson ◽  
P.R. Villeneuve ◽  
J.D. Joannopoulos ◽  
...  

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