Resonant cavity based compact efficient antireflection structures for photonic crystals

We propose an effective admittance (EA) method to design antireflection structures for two-dimensional photonic crystals (PCs). We demonstrate that a compact and efficient antireflection structure, which is difficult to obtain by the conventional admittance matching method, can be readily designed by the EA method. The antireflection structure consists of an air slot resonant cavity that is constructed only with the materials that constitute the PC. Compared with a bare PC, the reflection from a PC with an antireflection structure is reduced by two orders of magnitude over a wide bandwidth. To confirm the presented EA method, finite-difference time-domain (FDTD) simulations are performed, and the results from the FDTD and the EA method are in good agreement.

[1]  P. Yeh,et al.  Electromagnetic propagation in periodic stratified media. I. General theory , 1977 .

[2]  E. Yablonovitch,et al.  Inhibited spontaneous emission in solid-state physics and electronics. , 1987, Physical review letters.

[3]  Jean-Pierre Berenger,et al.  A perfectly matched layer for the absorption of electromagnetic waves , 1994 .

[4]  Dennis W Prather,et al.  Dispersion-based optical routing in photonic crystals. , 2004, Optics letters.

[5]  Masaya Notomi,et al.  Photonic crystals for micro lightwave circuits using wavelength-dependent angular beam steering , 1999 .

[6]  C. Soukoulis,et al.  Electromagnetic waves: Negative refraction by photonic crystals , 2003, Nature.

[7]  Steven G. Johnson,et al.  Photonic Crystals: Molding the Flow of Light , 1995 .

[8]  C. Soukoulis,et al.  Subwavelength resolution in a two-dimensional photonic-crystal-based superlens. , 2003, Physical review letters.

[9]  Hirohito Yamada,et al.  Immittance matching for multidimensional open-system photonic crystals , 2003 .

[10]  Toshihiko Baba,et al.  Interfaces of Photonic Crystals for High Efficiency Light Transmission , 2001 .

[11]  P. Couturier.  Japan , 1988, The Lancet.

[12]  J. Witzens,et al.  Mode matching interface for efficient coupling of light into planar photonic crystals , 2004, InternationalQuantum Electronics Conference, 2004. (IQEC)..

[13]  Shanhui Fan,et al.  Bends and splitters for self-collimated beams in photonic crystals , 2003 .

[14]  B. Momeni,et al.  Adiabatic matching stage for coupling of light to extended Bloch modes of photonic crystals , 2005 .

[15]  R. McPhedran,et al.  Highly efficient wide-angle transmission into uniform rod-type photonic crystals , 2005 .

[16]  Masaya Notomi,et al.  Theory of light propagation in strongly modulated photonic crystals: Refractionlike behavior in the vicinity of the photonic band gap , 2000 .