Journal article · Preprint article
Slow-light-enhanced energy efficiency for graphene microheaters on silicon photonic crystal waveguides
Huazhong University of Science and Technology1
Center for Nanostructured Graphene, Centers, Technical University of Denmark2
Department of Photonics Engineering, Technical University of Denmark3
Centre of Excellence for Silicon Photonics for Optical Communications, Centers, Technical University of Denmark4
Nanophotonic Devices, Department of Photonics Engineering, Technical University of Denmark5
Structured Electromagnetic Materials, Department of Photonics Engineering, Technical University of Denmark6
Ultra-fast Optical Communication, Department of Photonics Engineering, Technical University of Denmark7
Slow light has been widely utilized to obtain enhanced nonlinearities, enhanced spontaneous emissions and increased phase shifts owing to its ability to promote light-matter interactions. By incorporating a graphene on a slow-light silicon photonic crystal waveguide, here we experimentally demonstrate an energy-efficient graphene microheater with a tuning efficiency of 1.07 nmmW-1 and power consumption per free spectral range of 3.99 mW.
The rise and decay times (10-90%) are only 750 and 525 ns, which, to the best of our knowledge, are the fastest reported response times for microheaters in silicon photonics. The corresponding figure of merit of the device is 2.543 nW s, one order of magnitude better than results reported in previous studies.
The influence of the length and shape of the graphene heater to the tuning efficiency is further investigated, providing valuable guidelines for enhancing the tuning efficiency of the graphene microheater.
| Language: | English |
|---|---|
| Publisher: | Nature Publishing Group |
| Year: | 2017 |
| Pages: | 14411 |
| ISSN: | 20411723 |
| Types: | Journal article and Preprint article |
| DOI: | 10.1038/ncomms14411 |
| ORCIDs: | Zhu, Xiaolong , Frandsen, Lars Hagedorn , Xiao, Sanshui , Mortensen, N. Asger and Ding, Yunhong |
