Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Multiple Layers of Silicon-Silica (Si-SiO2) Pair onto Silicon Substrate towards Highly Efficient, Wideband Silicon Photonic Grating Coupler

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.R.H. 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). Asaduzzaman, M.; Bakaul, M.; Skafidas, S.; Khandokar, M.R.H. 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.

Keywords

grating coupler; silicon photonics; optical interconnects; fiber interface; nanophotonics

Subject

ENGINEERING, Electrical & Electronic Engineering

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our diversity statement.

Leave a public comment
Send a private comment to the author(s)
Views 0
Downloads 0
Comments 0
Metrics 0


×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.

We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.