Title :
In-plane light propagation in Ta2O5/SiO2 autocloned photonic crystals
Author :
Sato, Takashi ; Ohtera, Yasuo ; Ishino, Naoto ; Miura, Kenta ; Kawakami, Shojiro
Author_Institution :
New Ind. Creation Hatchery Center, Tohoku Univ., Sendai, Japan
fDate :
7/1/2002 12:00:00 AM
Abstract :
We investigate the characteristics of in-plane light propagation in 2-D photonic crystals fabricated by the autocloning method, by which multiple layers are stacked while preserving periodic surface corrugation. A numerical analysis shows that Ta2O5/SiO2 autocloned photonic crystals are applicable to waveguides and lenses since a sufficient amount of change of the effective refractive index is obtained by adjusting the aspect ratio of the unit structure. It is also shown that the crystals have a wide bandgap applicable to Bragg reflectors and resonators. Experimental results reveal that in-plane propagation losses for the two directions are less than 1.4 dB/mm at λ=1.55 μm, showing the crystals are useful for low loss in-plane devices
Keywords :
integrated optics; lenses; light propagation; optical losses; optical multilayers; optical resonators; optical waveguides; photonic band gap; silicon compounds; tantalum compounds; 1.55 micron; 2D photonic crystal fabrication; Bragg reflectors; Ta2O5-SiO2; Ta2O5/SiO2 autocloned photonic crystals; aspect ratio; autocloned photonic crystals; autocloning method; effective refractive index; in-plane light propagation; in-plane propagation losses; lenses; low loss in-plane devices; multiple layers; numerical analysis; optical waveguides; periodic surface corrugation; resonators; unit structure; wide bandgap; Circuits; Corrugated surfaces; Crystalline materials; Optical propagation; Optical resonators; Optical surface waves; Optical waveguides; Photonic band gap; Photonic crystals; Propagation losses;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2002.1017605
