Abstract
In this paper, we theoretically show that high-performance and low-loss mid-infrared plasmon waveguiding can be achieved by introducing a thin low-index buffer layer between a graphene-coated nanowire and a silicon substrate. It is found that the introduction of the buffer layer can mediate the coupling between the nanowire and substrate, and it can effectively suppress the leaky radiation to the substrate. According to the results, by choosing an ultra-small buffer thickness and gap distance and also by fine-tuning the nanowire and graphene parameters, a low propagation loss (0.312 dB/μm) with improved figure of merit can be realized simultaneously. Our findings are important for the optimum design of substrate-supported graphene-based cylindrical waveguides.
© 2016 Optical Society of America
Full Article |
PDF Article
More Like This
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 Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica 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 Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica 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 Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription
Tables (1)
You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica 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 Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription