Abstract

We study the spatial modulation instability (MI) in a system of coupled surface plasmon polaritons propagating at a dielectric–metal–dielectric interface. One of the dielectric media considered is nonlinear and active, which provides enough gain to compensate for the losses in the metal. It is found that the system is unstable for both focusing or defocusing nonlinearity, with more instability in the focusing case. It is noted that nonlinearity is one of the key parameters for instability, with the real part controlling the maximum MI gain and the imaginary part controlling the MI gain saturation. Gain provided by the active medium is also an important parameter for the development of MI in the system. The generated sidebands are amplified as they propagate along the interfaces. We have noted that the defocusing case requires a large gain threshold to exhibit modulation instability for a symmetric solution.

© 2016 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Scaling of the nonlinear response of the surface plasmon polariton at a metal/dielectric interface

Alexandre Baron, Stéphane Larouche, Daniel J. Gauthier, and David R. Smith
J. Opt. Soc. Am. B 32(1) 9-14 (2015)

Spatial coupled-mode theory for surface plasmon polariton excitation at metallic gratings

Yijie Lou, Hong Pan, Tengfeng Zhu, and Zhichao Ruan
J. Opt. Soc. Am. B 33(5) 819-824 (2016)

Modulational instability of copropagating light beams induced by cubic–quintic nonlinearity in nonlinear negative-index material

Rama Gupta, Thokala Soloman Raju, Choragudi Nagaraja Kumar, and Prasanta K. Panigrahi
J. Opt. Soc. Am. B 29(12) 3360-3366 (2012)

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 (7)

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

Tables (2)

You do not have subscription access to this journal. Article tables 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 (22)

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