Journal article
Double-layer graphene on photonic crystal waveguide electro-absorption modulator with 12 GHz bandwidth
Huazhong University of Science and Technology1
Optofluidics, Nano and Bio-physical Systems, Department of Health Technology, Technical University of Denmark2
Nano and Bio-physical Systems, Department of Health Technology, Technical University of Denmark3
Department of Health Technology, Technical University of Denmark4
Centre of Excellence for Silicon Photonics for Optical Communications, Centers, Technical University of Denmark5
Ultra-fast Optical Communication, Department of Photonics Engineering, Technical University of Denmark6
Department of Photonics Engineering, Technical University of Denmark7
Structured Electromagnetic Materials, Department of Photonics Engineering, Technical University of Denmark8
Nanophotonic Devices, Department of Photonics Engineering, Technical University of Denmark9
Graphene has been widely used in silicon-based optical modulators for its ultra-broadband light absorption and ultrafast optoelectronic response. By incorporating graphene and slow-light silicon photonic crystal waveguide (PhCW), here we propose and experimentally demonstrate a unique double-layer graphene electroabsorption modulator in telecommunication applications.
The modulator exhibits a modulation depth of 0.5 dB/μm with a bandwidth of 13.6 GHz, while graphene coverage length is only 1.2 μm in simulations. We also fabricated the graphene modulator on silicon platform, and the device achieved a modulation bandwidth at 12 GHz. The proposed graphene-PhCW modulator may have potentials in the applications of on-chip interconnections.
| Language: | English |
|---|---|
| Publisher: | De Gruyter |
| Year: | 2020 |
| Pages: | 2377-2385 |
| ISSN: | 21928614 and 21928606 |
| Types: | Journal article |
| DOI: | 10.1515/nanoph-2019-0381 |
| ORCIDs: | Zhu, Xiaolong , Galili, Michael , Frandsen, Lars Hagedorn , Hu, Hao , Xiao, Sanshui , Ding, Yunhong and Oxenløwe, Leif Katsuo |
