Abstract

One of the unique characteristics of hyperbolic metamaterials (MMs) is the possibility of accessing various regimes of extreme anisotropy. Here, we propose a MM based on periodic layers of hafnium oxide (HfO2) and monolayer graphene. Based on the fact that graphene permittivity can be controlled by changing its chemical potential via externally applied electric voltage, we theoretically investigate the anisotropic behavior of the proposed MM as the function of the external electrical bias. Based on our findings, we provide examples of possible nanophotonic device applications based on such tunable hyperbolic MMs. Prototypes of a polarizer, a modulator, and a MM-assisted tunable coupler are investigated at the 1550 nm communication wavelength. Additionally, we show that the high tuning efficiency of MMs allows a miniaturized device to be realized with enhanced functionality per area for photonic integration.

© 2018 Optical Society of America

Full Article  |  PDF Article
More Like This
Optical switching through graphene-induced exceptional points

Dimitrios Chatzidimitriou and Emmanouil E. Kriezis
J. Opt. Soc. Am. B 35(7) 1525-1535 (2018)

Tunable terahertz amplification based on photoexcited active graphene hyperbolic metamaterials [Invited]

Tianjing Guo, Liang Zhu, Pai-Yen Chen, and Christos Argyropoulos
Opt. Mater. Express 8(12) 3941-3952 (2018)

Graphene-based hyperbolic metamaterial as a switchable reflection modulator

Alessandro Pianelli, Rafał Kowerdziej, Michał Dudek, Karol Sielezin, Marek Olifierczuk, and Janusz Parka
Opt. Express 28(5) 6708-6718 (2020)

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 (16)

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

Equations (13)

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

Metrics