A high speed optical modulator based on graphene-on-graphene hybrid nanophotonic waveguide
| Autor: | Yang Xi, Kesu Cai, Zhizhen Duan, Zhong Wang, Yang Lu, Yuee Li |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
business.industry Graphene Bandwidth (signal processing) Nanophotonics 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Transverse mode law.invention 010309 optics Amplitude modulation Optical modulator law 0103 physical sciences Figure of merit Optoelectronics Insertion loss Electrical and Electronic Engineering 0210 nano-technology business |
| Zdroj: | Optik. 179:216-221 |
| ISSN: | 0030-4026 |
| DOI: | 10.1016/j.ijleo.2018.10.106 |
| Popis: | Using an important feature of the hybrid graphene nanophotonic waveguide that TM and TE modes residing in two separated areas, we design a TE mode modulator and optimize its performance by tuning the ridge width and the low index layer height. Furthermore, the essential parameters including the insertion loss, the modulation depth, the bandwidth and figure of merit have been investigated. Our designed modulator demonstrates a 3-dB modulation depth with extra-small dimension (2 μm × 1.1 μm × 12.17 μm) and then a small footprint (0.5 μm × 12.17 μm) can be achieved. In addition, the modulator offers a broad working wavelength range and 80 GHz high modulation bandwidth upon the energy 108.8 fJ/bit. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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