Theoretical Analysis of Photonic Band Gaps and Defect Modes of Novel Photonic Crystal Waveguides Consisting of Si-Ion Implanted SiO2 Using the Finite-Difference Time-Domain Method

Amarachukwu Valentine Umenyi; Shinya Kawashiri; Kenta Miura; Osamu Hanaizumi

doi:10.4028/www.scientific.net/KEM.459.162

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Theoretical Analysis of Photonic Band Gaps and Defect Modes of Novel Photonic Crystal Waveguides Consisting of Si-Ion Implanted SiO₂ Using the Finite-Difference Time-Domain Method
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 459Theoretical Analysis of Photonic Band Gaps and...

Theoretical Analysis of Photonic Band Gaps and Defect Modes of Novel Photonic Crystal Waveguides Consisting of Si-Ion Implanted SiO₂ Using the Finite-Difference Time-Domain Method

Abstract:

In this paper, photonic crystals (PC) based on 2-D periodic arrays of air holes were investigated on Si-ion implanted SiO₂ using finite-difference time-domain (FDTD) simulations. The PC design parameters based on the telecommunication wavelength (λ=1.55 µm) were obtained by varying the radius to lattice constant ratio (r/a) from 0.2 to 0.45. We analyzed both transverse electric (TE) and transverse magnetic (TM) mode propagation in triangular-lattice PCs. The result obtained shows that a PC bandgap (PBG) exists for TE-mode propagation in the Si-ion implanted SiO₂ patterned 2-D triangular lattice of air holes. We have also calculated the dispersion relations for the TE mode of a line defect in the structure and shown a fabricated sample. These analyses are obviously important for fabricating novel PC waveguides, which can easily be integrated into the existing silicon technology for directing light from one part of a chip to the other.

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Periodical:

Key Engineering Materials (Volume 459)

Pages:

162-167

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.459.162

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Online since:

December 2010

Authors:

Amarachukwu Valentine Umenyi, Shinya Kawashiri, Kenta Miura, Osamu Hanaizumi

Keywords:

Finite Difference Time Domain (FDTD) Method, Ion Implantation, Photonic Bandgap, Photonic Crystal Waveguide, Silicon Photonics

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