Nanophotonic integrated circuits using graphene oxide 2D thin films for nonlinear optics - Archive ouverte HAL
Pré-Publication, Document De Travail Année : 2022

Nanophotonic integrated circuits using graphene oxide 2D thin films for nonlinear optics

Résumé

We report a significant experimental improvement in the performance of all-optical photonic chips that feature ring resonators and nanowires, through the integration of 2D GO (graphene oxide) layered thin films. The films are coated onto SiN, high Hydex glass, and silicon nanowires (SOI), featuring micro-ring resonators (MRRs) and waveguides. We achieve a significantly increased performance in the nonlinear optical performance based on four-wave mixing (FWM) and the Kerr nonlinearity. Our coating method is able to cover large scale areas, using processes that do not require transfer, and with a layer-by-layer coating method. To pattern the devices we use a combination of lift-off with photolithography processes, following processes that are consistent with complementary metal-oxide-semiconductor (CMOS) standards. For the silicon nanowires, we observe large self-phase modulation (SPM) induced spectrum broadening of optical pulses after propagating across SOI nanowires coated in GO induced. Our experimental results show a very large spectral broadening factor (SBF) of a factor of 4.34 for a patterned nanowire containing a film with ten GO layers. We also observe a substantial increase in the nonlinear figure of merit (FOM) of the SOI nanowires, by as much as twenty times, which yields a FOM greater than 5. For the SiN and Hydex waveguides, we observe a significantly increased efficiency in the FWM process by up to 9.1 dB, while in the Hydex waveguides we increase the conversion efficiency by 6.9dB compared to bare waveguides. For the MRRs, we observe an increase in the CE of the FWM process of ~10.3 dB because of resonant enhancement. Our work demonstrates the high capability of GO films to enhance the nonlinear optical performance of ring resonators, waveguides, and nanowires.
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Dates et versions

hal-03581566 , version 1 (20-02-2022)

Identifiants

  • HAL Id : hal-03581566 , version 1

Citer

David J Moss. Nanophotonic integrated circuits using graphene oxide 2D thin films for nonlinear optics. 2022. ⟨hal-03581566⟩
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