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Volume 25 - ICOP & ICPET 2019
ICOP & ICPET _ INPC _ ICOFS 2019, 25 - ICOP & ICPET 2019: 141-144 |
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Najafi Hajivar M, Hosseini- Farzad M. Introducing a new high-performance, polarization insensitive graphene-based modulator. ICOP & ICPET _ INPC _ ICOFS 2019; 25 :141-144
URL: http://opsi.ir/article-1-1655-en.html
URL: http://opsi.ir/article-1-1655-en.html
1- Department of Physics, College of Science, Shiraz University
Abstract: (2606 Views)
In this paper, a new structure is proposed in order to eliminate the sensitivity of the graphene modulators to the incident light polarization. This structure consists of a square cross section buried waveguide. Each vertical wall of the waveguide is covered by a graphene layer and there are two graphene layers underneath the waveguide. Different polarization modes have the same interaction with graphene layers and so the modulator performance is almost the same for both modes. The simulation results for modulation depth of TE and TM modes and their differences, as a function of waveguide’s dimension are presented, also, loss of the structure for two modes (which can be considered as a part of the insertion loss of the modulator) with respect to dimensions is investigated. Also, the average modulation depth and also average loss are also studied. The results show that the proposed structure demonstrate a remarkable polarization independent graphene-based modulator.
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