Outline

  • Abstract
  • Keywords
  • 1. Introduction
  • 2. Geometry and Theoretical Model
  • 3. Simulation and Discussion
  • 4. Conclusion
  • Acknowledgments
  • References

رئوس مطالب

  • چکیده
  • کلید واژه ها
  • 1.مقدمه
  • 2.ساختار هندسی و مدل تئوری
  • 3.شبیه سازی و بحث
  • 4. نتیجه گیری
  • قدردانی

Abstract

The plasmon induced transparency (PIT) effect is investigated in a graphene-based waveguide, which is composed of a graphene bus waveguide side-coupled with a graphene strip directly and a graphene ring indirectly. Conventional numerical simulations based on finite element method (FEM) are used to study the transmission properties through optimizing the relevant parameters, and it is proved that the simulation results agree well with the analytical results. Then as one of the potential application branches of the PIT-like effect, the property of refractive index sensing with a higher sensitivity of 4160 nm/RIU is further studied. The result can help to deepen the understanding of PIT-like effect and nano sensor, and it would be also beneficial for the studies and applications of nanoscale graphene-based optical devices.

Keywords: - - -

Conclusions

In conclusion, a new type of graphene-based waveguide structure composed of a bus waveguide side coupled with a graphene strip resonator directly and with a graphene ring resonator indirectly has been proposed in this paper. The so-called PIT effect can be achieved by controlling the relevant parameters. The refractive index sensor is realized with a sensitivity of 4160 nm/RIU as well as a higher value of figure of merit. The presented waveguide structure and the features obtained for it can be useful in optical integrated circuits, especially in the design of nano sensors, switches, slow light devices, and modulators.

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