Wideband switch enhanced by photonic crystal waveguide with graphene nanosheet heater
| Autor: | Yukuan Ma, Chee Wei Wong, Dim-Lee Kwong, Jiagui Wu, Jinghui Yang, Mingbin Yu, Hao Zhou, Xiaoxu Chen, Shouhuan Zhou |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Microheater
Materials science QC1-999 General Physics and Astronomy 02 engineering and technology Wideband thermo-optical switch 01 natural sciences Optical switch law.invention Photonic crystal waveguides law 0103 physical sciences Bandwidth (computing) Wideband Nanosheet 010302 applied physics Extinction ratio business.industry Graphene Physics 021001 nanoscience & nanotechnology Graphene heater Slow-light PhCWG Optoelectronics 0210 nano-technology business Bandedge tuning |
| Zdroj: | Results in Physics, Vol 26, Iss, Pp 104434-(2021) |
| ISSN: | 2211-3797 |
| DOI: | 10.1016/j.rinp.2021.104434 |
| Popis: | A compact wideband optical switch assisted by graphene nanosheet heater is demonstrated by shifting the bandedge of the photonic crystal waveguides (PhCWG) through current-induced heating. The high heating efficiency of graphene and the high light-matter interactions in slow-light PhCWG are combined to enhance the heating efficiency and extinction ratio. The extinction ratio is increased from 15 dB to 22 dB and the tuning bandwidth is up to 20 nm with only 28 K temperature change. Our measurements match well with simulation results, suggesting an effective way for CMOS compatible chip-scale integrated graphene microheater switch. |
| Databáze: | OpenAIRE |
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