Abstract

The radiation pattern and out-coupling efficiency of light from the end surface of interlayer (oblique) waveguides in stacked-stripe 3-D photonic crystals are numerically investigated. It is shown that the coupling to the surface mode of the 3-D photonic crystal decreases the out-coupling efficiency to free-space modes down to 60%, whereas the reflection at the surface is negligibly small. The efficiency can be improved to 90% by introducing a 2-D grating-like structure to create a surface-mode gap, where surface modes are prohibited.

© 2015 IEEE

Control of radiation angle by introducing symmetric end structure to oblique waveguide in three-dimensional photonic crystal

Kou Gondaira, Kenji Ishizaki, Keisuke Kitano, Takashi Asano, and Susumu Noda
Opt. Express 24(12) 13518-13526 (2016)

Nanocavities at the surface of three-dimensional photonic crystals

Kenji Ishizaki, Kou Gondaira, Yuji Ota, Katsuyoshi Suzuki, and Susumu Noda
Opt. Express 21(9) 10590-10596 (2013)

Influence of structural fluctuations on Q factor of nanocavities at the surface of three-dimensional photonic crystals

Kou Gondaira, Kenji Ishizaki, and Susumu Noda
J. Opt. Soc. Am. B 30(6) 1660-1664 (2013)

Light propagation in three-dimensional photonic crystals

Shoichi Kawashima, Kenji Ishizaki, and Susumu Noda
Opt. Express 18(1) 386-392 (2010)

Efficient coupling into slow light photonic crystal waveguide without transition region: role of evanescent modes

C. Martijn de Sterke, K. B. Dossou, T. P. White, L. C. Botten, and R. C. McPhedran
Opt. Express 17(20) 17338-17343 (2009)