Broadband Silicon-On-Insulator directional couplers using a combination of straight and curved waveguide sections

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-sectio...

Full description

Saved in:
Bibliographic Details
Published inScientific reports Vol. 7; no. 1; pp. 7246 - 8
Main Authors Chen, George F. R., Ong, Jun Rong, Ang, Thomas Y. L., Lim, Soon Thor, Png, Ching Eng, Tan, Dawn T. H.
Format Journal Article
LanguageEnglish
Published London Nature Publishing Group UK 03.08.2017
Nature Publishing Group
Nature Portfolio
Subjects
142/126
639/624/1075/1079
639/624/399/1099
Bandwidths
Design
Humanities and Social Sciences
multidisciplinary
Photonics
Science
Science (multidisciplinary)
Silicon
Online AccessGet full text

Cover

More Information
Summary: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  μ m × 3  μ m. In addition, a balanced Mach-Zehnder interferometer is fabricated showing an extinction ratio of >16 dB over 100 nm of bandwidth.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-017-07618-6