Abstract

Broadband Silicon-On-Insulator (SOI) directional couplers are designed based on a combination of curved and straight coupled waveguide sections. A design methodology based on the transfer matrix method (TMM) is used to determine the required coupler section lengths, radii, and waveguide cross-sections. A 50/50 power splitter with a measured bandwidth of 88 nm is designed and fabricated, with a device footprint of 20 μm × 3 μm. In addition, a balanced Mach-Zehnder interferometer is fabricated showing an extinction ratio of >16 dB over 100 nm of bandwidth.

Details

Title
Broadband Silicon-On-Insulator directional couplers using a combination of straight and curved waveguide sections
Author
Chen, George F R 1 ; Jun Rong Ong 2   VIAFID ORCID Logo  ; Ang, Thomas Y L 2 ; Lim, Soon Thor 3 ; Ching Eng Png 3 ; Tan, Dawn T H 1 

1  Singapore University of Technology and Design, Singapore, Singapore 
2  Electronics and Photonics Department, Institute of High Performance Computing, Agency for Science Technology and Research, Singapore, Singapore 
3  Electronics and Photonics Department, Institute of High Performance Computing, Agency for Science Technology and Research, Singapore, Singapore; Optic2Connect (O2C) Pte Ltd, Singapore, Singapore 
Pages
1-8
Publication year
2017
Publication date
Aug 2017
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1038/s41598-017-07618-6
ProQuest document ID
1957149449
Copyright
© 2017. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.