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Photo-thermal tuning of graphene oxide coated integrated optical waveguides
- Source :
- Micromachines volume 13, page 1194 (2022)
- Publication Year :
- 2022
-
Abstract
- We experimentally investigate power sensitive photothermal tuning (PTT) of two dimensional (2D) graphene oxide (GO) films coated on integrated optical waveguides. We measure the light power thresholds for reversible and permanent GO reduction in silicon nitride (SiN) waveguides integrated with 1 and 2 layers of GO. Raman spectra at different positions of a hybrid waveguide with permanently reduced GO are characterized, verifying the inhomogeneous GO reduction along the direction of light propagation through the waveguide. The differences between the PTT induced by a continuous wave laser and a pulsed laser are also compared, confirming that the PTT mainly depend on the average input power. These results reveal interesting features for 2D GO films coated on integrated optical waveguides, which are of fundamental importance for the control and engineering of GO properties in hybrid integrated photonic devices.<br />Comment: 12 pages, 6 figures, 99 references
- Subjects :
- Physics - Optics
Subjects
Details
- Database :
- arXiv
- Journal :
- Micromachines volume 13, page 1194 (2022)
- Publication Type :
- Report
- Accession number :
- edsarx.2211.02983
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.3390/mi13081194