| Full text | |
| Author(s): |
Camacho, W. A.
;
de Carvalho, M. M.
;
Ramirez, J. C.
;
de Souza, E. A. Thoroh
;
Saito, L. A. M.
Total Authors: 5
|
| Document type: | Journal article |
| Source: | OPTICS AND LASER TECHNOLOGY; v. 157, p. 6-pg., 2023-01-01. |
| Abstract | |
This paper presents a new concept of a graphene-based adaptive modulator for multilevel amplitude modulation on polymer technology platform. This component consists of an electro-optical modulator with a distributed five segments capacitive structure, based on two single-layers of graphene (SLG) and a thin layer of silicon nitride (Si3N4) in the form (SLG-Si3N4-SLG), which shows a dynamic configuration of the modulation scheme, PAM-4/PAM-8, by the applied logic voltage sequence (3V(pp)) for an operating wavelength at 1550 nm. Considering an extinction ratio of 5.6 dB for PAM-4, and 6.0 dB for PAM-8, a compact device with 179.6 mu m total length, and the maximum simulated cut-off frequency of 48.12 GHz with 122.9 omega of capacitance and total device resistance of 26.9 omega, were achieved. This cut-off frequency results in a transmission rate of 96.24 Gbps at PAM-4 and 144.4 Gb/s at PAM-8. The simulated insertion loss is 12.0 dB (PAM-4) and 11.5 dB for PAM-8, and the power con-sumption is 0.54 pJ/bit for PAM-4 and 0.81 pJ/bit for PAM-8. Combining an innovative design with the unique electro-optical characteristics widely demonstrated by the materials used in the construction of the proposed adaptive device, allows it to be seen as a candidate to contribute to the nanotechnology integration and high-performance communication requirements. (AU) | |
| FAPESP's process: | 12/50259-8 - Graphene: photonics and opto-electronics: UPM-NUS collaboration |
| Grantee: | Antonio Helio de Castro Neto |
| Support Opportunities: | Research Projects - SPEC Program |
| FAPESP's process: | 18/08988-9 - Towards high speed optical devices by exploiting the unique properties of 2D materials |
| Grantee: | Hugo Luis Fragnito |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 15/11779-4 - Plasmonic and nonlinear effects in graphene coupled to optical waveguides |
| Grantee: | Christiano José Santiago de Matos |
| Support Opportunities: | Research Projects - Thematic Grants |