All-Optical Switch Based on Thermo-Optic Effect in Graphene-on- Si3N4 Structure
| Autor: | Hayder Maki Hamodi, Raad Sami Fyath |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | مجلة النهرين للعلوم الهندسية, Vol 27, Iss 2 (2024) |
| Druh dokumentu: | article |
| ISSN: | 2521-9154 2521-9162 |
| DOI: | 10.29194/NJES.27020199 |
| Popis: | A high-performance Mach-Zehnder interferometer (MZI) based all-optical switch using graphene on silicon nitride (Si3N4) is proposed and simulated. Graphene absorbs pump power (λ = 980 nm) on Si3N4 waveguide, generating heat. The heat affects the Si3N4 waveguide, causing a change in its refractive index due to thermo-optic effect. By tuning the probe phase (λ = 1550 nm) in the Si3N4 arm with graphene on top, all optical switching can then be carried out. An extinction ratio ranges of 13-25 dB and pump power range 20-270 mW. These findings demonstrate that our suggested configuration offers a useful integrated part for the creation of effective all-optical control devices on the insulator platform with a quick switching rate. Moreover, the suggested design might be able to achieve a wide bandwidth by utilizing an integrated MZI structure. |
| Databáze: | Directory of Open Access Journals |
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