Polarization Control in Integrated Silicon Waveguides Using Semiconductor Nanowires

Kaplan, Ali Emre; Vitali, Valerio; Demontis, Valeria; Rossella, Francesco; Fontana, A.; Cornia, Samuele; Petropoulos, P.; Bellani, V.; Lacava, Cosimo; Cristiani, Ilaria

doi:10.3390/nano12142438

Cited by 5 publications

(3 citation statements)

References 56 publications

(67 reference statements)

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“…In this context, a novel polarization control device has been proposed [101], allowing for the achievement of full polarization rotation within a reduced spatial scale (<20 µm) and with low losses (<2 dB). This is achieved by introducing a set of semiconducting nanowires on a Si waveguide in order to provide a periodic perturbation leading to the controlled rotation of the polarization.…”

Section: One-dimensional Nanostructures Integration In Integrated Pho...mentioning

confidence: 99%

Hybrid Integrated Silicon Photonics Based on Nanomaterials

Prete,

Amanti,

Andrini

et al. 2024

Photonics

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Integrated photonic platforms have rapidly emerged as highly promising and extensively investigated systems for advancing classical and quantum information technologies, since their ability to seamlessly integrate photonic components within the telecommunication band with existing silicon-based industrial processes offers significant advantages. However, despite this integration facilitating the development of novel devices, fostering fast and reliable communication protocols and the manipulation of quantum information, traditional integrated silicon photonics faces inherent physical limitations that necessitate a challenging trade-off between device efficiency and spatial footprint. To address this issue, researchers are focusing on the integration of nanoscale materials into photonic platforms, offering a novel approach to enhance device performance while reducing spatial requirements. These developments are of paramount importance in both classical and quantum information technologies, potentially revolutionizing the industry. In this review, we explore the latest endeavors in hybrid photonic platforms leveraging the combination of integrated silicon photonic platforms and nanoscale materials, allowing for the unlocking of increased device efficiency and compact form factors. Finally, we provide insights into future developments and the evolving landscape of hybrid integrated photonic nanomaterial platforms.

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Section: One-dimensional Nanostructures Integration In Integrated Pho...mentioning

confidence: 99%

Hybrid Integrated Silicon Photonics Based on Nanomaterials

Prete,

Amanti,

Andrini

et al. 2024

Photonics

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, in such a case, tight bends are prohibited to avoid extensive losses. On the other hand, nano-waveguides enabled by high refractive index contrast materials, such as silicon or germanium, allow very tiny and compact photonic circuitry [ 7 , 8 , 9 ]. Propagation loss is higher, but the reduced footprint of the components compensates for it.…”

Section: Introductionmentioning

confidence: 99%

Low Loss Vertical TiO2/Polymer Hybrid Nano-Waveguides

et al. 2023

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This article proposes a novel demonstration of a low-loss polymer channel hybridized with a titania core leading to a nano-waveguide elongated in the normal direction to the substrate. It is aimed at using the quasi-transverse magnetic (TM) mode as the predominant mode in compact photonic circuitry. A detailed design analysis shows how a thin layer of a higher-refractive index material in a trench within the core of the waveguide can increase the confinement and reduce the propagation losses. This thin layer, produced by atomic layer deposition, covers the entire polymer structure in a conformal manner, ensuring both a reduction of the surface roughness and a stronger field confinement. The trench can be made at any place within the polymer channel and therefore its position can be tuned to obtain asymmetric modal distribution. The waveguide is demonstrated at telecom wavelengths, although the material’s properties enable operation over a large part of the electromagnetic spectrum. We measured propagation losses as low as 1.75 ± 0.32 dB/cm in a 200 nm × 900 nm section of the waveguide core. All processes being mass-production compatible, this study opens a path towards easier integrated-component manufacture.

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“…Graphene, 2D nanomaterials and semiconductor nanowires can be used to build nanodevices that are able to coherently and dynamically manipulate the photon polarization [6]. In 2D material-based nanodevices, the conductivity regime can be precisely set by exploiting the electrostatic doping via gate control, switching between regimes in which inter-band chiral transitions, rather than surface plasmon polariton resonances, dominate the polarization response [7,8]. Moreover, 2D quantum nanomaterials [9], such as graphene and other 2D materials [10], are expected to play a key role in the development of next-generation quantum photonics platforms.…”

Section: Introductionmentioning

confidence: 99%

Polarization Control in Integrated Graphene-Silicon Quantum Photonics Waveguides

et al. 2022

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We numerically investigated the use of graphene nanoribbons placed on top of silicon-on-insulator (SOI) strip waveguides for light polarization control in silicon photonic-integrated waveguides. We found that two factors mainly affected the polarization control: the graphene chemical potential and the geometrical parameters of the waveguide, such as the waveguide and nanoribbon widths and distance. We show that the graphene chemical potential influences both TE and TM polarizations almost in the same way, while the waveguide width tapering enables both TE-pass and TM-pass polarizing functionalities. Overall, by increasing the oxide spacer thickness between the silicon waveguide and the top graphene layer, the device insertion losses can be reduced, while preserving a high polarization extinction ratio.

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Polarization Control in Integrated Silicon Waveguides Using Semiconductor Nanowires

Cited by 5 publications

References 56 publications

Hybrid Integrated Silicon Photonics Based on Nanomaterials

Hybrid Integrated Silicon Photonics Based on Nanomaterials

Low Loss Vertical TiO2/Polymer Hybrid Nano-Waveguides

Polarization Control in Integrated Graphene-Silicon Quantum Photonics Waveguides

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