A terahertz photonic crystal wavelength division multiplexer based on graphene surface plasmon polaritons
- Resource Type
- Conference
- Authors
- Wang, Chenglong; Ji, Junchao; Wu, Xidong; Zhou, Jinfang
- Source
- 2020 IEEE USNC-CNC-URSI North American Radio Science Meeting (Joint with AP-S Symposium) Radio Science Meeting (Joint with AP-S Symposium), 2020 IEEE USNC-CNC-URSI North American. :119-120 Jul, 2020
- Subject
- Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Fields, Waves and Electromagnetics
Photonics and Electrooptics
Signal Processing and Analysis
Graphene
Wavelength division multiplexing
Couplings
Photonic band gap
Indexes
Conductivity
Logic gates
- Language
This paper presents a two-dimensional (2D) photonic crystal structure based on graphene surface plasmon polaritons (SPP) for terahertz wavelength division multiplexing (WDM) applications. By etching a periodic array of equal-diameter cylindrical holes with the same height in the ground, a periodic SPP effective index profile of 2D photonic crystal can be created on graphene with a single gate voltage between graphene and ground. Based on this uneven ground structure, a photonic crystal multimode interference (MMI) WDM has been demonstrated. Simulation results show that the designed device exhibits isolations of higher than 17.30 dB and bandwidth of 0.06 THz at both frequencies.