Abstract

Broadband and tunable control of surface plasmon polaritons in the near-infrared and visible spectrum is demonstrated theoretically and numerically with a pair of phased nanoslits. We establish, with simulations supported by a coupled wave model, that by dividing the incident power equally between two input channels, the maximum plasmon intensity deliverable to either side of the nanoslit pair is twice that for an isolated slit. For a broadband source, a compact device with nanoslit separation of the order of a tenth of the wavelength is shown to steer nearly all the generated plasmons to one side for the same phase delay, thereby achieving a broadband unidirectional plasmon launcher. The reported effect can be applied to the design of ultra-broadband and efficient tunable plasmonic devices.

© 2013 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Integrated plasmonic semi-circular launcher for dielectric-loaded surface plasmon-polariton waveguide

Xiaowei Li, Lingling Huang, Qiaofeng Tan, Benfeng Bai, and Guofan Jin
Opt. Express 19(7) 6541-6548 (2011)

Surface plasmon polaritons locally excited on the ridges of metallic gratings

B. Wang and P. Lalanne
J. Opt. Soc. Am. A 27(6) 1432-1441 (2010)

Enhancing the efficiency of slit-coupling to surface-plasmon-polaritons via dispersion engineering

R. Mehfuz, M. W. Maqsood, and K. J. Chau
Opt. Express 18(17) 18206-18216 (2010)

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 (3)

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 (3)

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

Metrics

You do not have subscription access to this journal. Article level metrics 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