Abstract

The ability of both bowtie and semicircle antennas to enhance waveguide input coupling efficiency in thin trench waveguides was studied for broadband applications. The waveguide outputs of trench waveguides with and without antennas were measured using a tunable laser with wavelengths ranging from 570 nm to 960 nm under both parallel and perpendicular polarization conditions. The results indicated that the waveguides with antennas performed better than the trench waveguide alone for parallel polarization conditions with maximum enhancements of 51 and 32 from the simulations, and 14.4 and 5.2 experimentally for the bowtie and semicircle, respectively. Conversely, there was no significant enhancement for the perpendicular polarization. This was attributed to the excitation of either the gap mode or the surface plasmon mode, depending on polarization.

© 2019 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Surface plasmon propagation enhancement via bowtie antenna incorporation in Au–mica block waveguides

Isabel A. Pita, Mahendar Kumbham, Michael Schmidt, Matthew Gleeson, Kevin M. Ryan, Christophe Silien, and Ning Liu
Appl. Opt. 57(22) E50-E56 (2018)

Sierpiński fractal plasmonic antenna: a fractal abstraction of the plasmonic bowtie antenna

Shawn Sederberg and A.Y. Elezzabi
Opt. Express 19(11) 10456-10461 (2011)

Bright and dark plasmon resonances of nanoplasmonic antennas evanescently coupled with a silicon nitride waveguide

Frédéric Peyskens, Ananth Z. Subramanian, Pieter Neutens, Ashim Dhakal, Pol Van Dorpe, Nicolas Le Thomas, and Roel Baets
Opt. Express 23(3) 3088-3101 (2015)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (10)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (1)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription