Plasmonic and nonlinear effects in graphene coupled to optical waveguides
| Grant number: | 17/07557-1 |
| Support type: | Scholarships in Brazil - Master |
| Effective date (Start): | November 01, 2017 |
| Effective date (End): | June 30, 2019 |
| Field of knowledge: | Engineering - Electrical Engineering |
| Principal Investigator: | Lúcia Akemi Miyazato Saito |
| Grantee: | Maria Cecília Schineider Araújo |
| Home Institution: | Centro de Pesquisas Avançadas em Grafeno, Nanomateriais e Nanotecnologia (MackGrafe). Universidade Presbiteriana Mackenzie (UPM). Instituto Presbiteriano Mackenzie. São Paulo, SP, Brazil |
| Associated research grant: | 12/50259-8 - Graphene: photonics and opto-electronics: UPM-NUS collaboration, AP.SPEC |
Abstract The objective of this project is to develop a process of manufacture and characterization of graphene-based electro-optical modulator with the structure of a FET (Field Effect Transistor) on a waveguide, where electric gate voltage (Vg) is applied on the device in order to modulate the optical signal. The optical modulator will consist of a graphene CVD (Chemical Vapor Deposition) layer transferred to the polished side of an optical fiber, which called D-shaped optical fiber and covered by ionic liquid with the function of dielectric and gate contact. This sample is fixed on a silica substrate between two metallic contacts, which will have the function of source and drain. The performance of the electro-optical graphene modulator is going to be evaluate by considering three important parameters: frequency modulation (f), the gate voltage (Vg), and the modulation depth (Pmod), whose is calculated by the absorption difference between the two propagation modes, TE and TM. | |