Version 1
: Received: 4 August 2016 / Approved: 4 August 2016 / Online: 4 August 2016 (12:00:43 CEST)
How to cite:
Asaduzzaman, M.; Bakaul, M.; Skafidas, S.; Khandokar, M. Multiple Layers of Silicon-Silica (Si-SiO2) Pair onto Silicon Substrate towards Highly Efficient, Wideband Silicon Photonic Grating Coupler. Preprints2016, 2016080044 (doi: 10.20944/preprints201608.0044.v1).
Asaduzzaman, M.; Bakaul, M.; Skafidas, S.; Khandokar, M. Multiple Layers of Silicon-Silica (Si-SiO2) Pair onto Silicon Substrate towards Highly Efficient, Wideband Silicon Photonic Grating Coupler. Preprints 2016, 2016080044 (doi: 10.20944/preprints201608.0044.v1).
Cite as:
Asaduzzaman, M.; Bakaul, M.; Skafidas, S.; Khandokar, M. Multiple Layers of Silicon-Silica (Si-SiO2) Pair onto Silicon Substrate towards Highly Efficient, Wideband Silicon Photonic Grating Coupler. Preprints2016, 2016080044 (doi: 10.20944/preprints201608.0044.v1).
Asaduzzaman, M.; Bakaul, M.; Skafidas, S.; Khandokar, M. Multiple Layers of Silicon-Silica (Si-SiO2) Pair onto Silicon Substrate towards Highly Efficient, Wideband Silicon Photonic Grating Coupler. Preprints 2016, 2016080044 (doi: 10.20944/preprints201608.0044.v1).
Abstract
A single mode waveguide grating coupler based on multiple Si-SiO2 pairs onto Si substrate has been designed. Numerical analysis has been carried out to calculate optimum thickness of the layers of Si-SiO2 that ensures the constructive interference between reflected waves and actual guided wave for high coupling efficiency. Based on the results, an optimal design is developed and modeled by using a 2-D finite difference time domain (2-D FDTD) simulator that dictates a coupling efficiency of as much as 78% (-1.07 dB) at the wavelength of 1550 nm, and a 1-dB bandwidth of 77 nm. The numerical method will be useful to calculate the optimum thicknesses of the layers for any reflector based grating coupler of different materials.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.