Polarization Control in Integrated Graphene-Silicon Quantum Photonics Waveguides

Cammarata, Simone; Fontana, A.; Kaplan, Ali Emre; Cornia, Samuele; T, Dao; Lacava, Cosimo; Demontis, Valeria; Iadanza, Simone; Vitali, Valerio; F, De Matteis; Pedreschi, E.; Magazzù, G.; Toncelli, A.; Spinella, F.; Saponara, Sergio; Gunnella, Roberto; Rossella, Francesco; Salamon, A.; Bellani, V.

doi:10.3390/ma15248739

Cited by 3 publications

(3 citation statements)

References 33 publications

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“…Despite graphene being limited in terms of light generation due to the absence of a bandgap, its favorable electrical transport properties allowed for the integration on silicon waveguides, enabling the realization of effective optical modulators [140][141][142][143], reaching modulation efficiency up to 1 dB/V and data rate up to 20 Gbps [144] and switches [145]. Additionally, several proposals employed graphene to realize polarization control devices with fixed polarization filtering [146], as well as tunable filters [147,148]. [137].…”

Section: Two-dimensional Materials Integration In Integrated Photonic...mentioning

confidence: 99%

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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: Two-dimensional Materials Integration In Integrated Photonic...mentioning

confidence: 99%

“…Image reprinted from [137]. (c) Tunable polarization control enabled by graphene integration in PICs.Image reprinted from[148]. (d) The integration of graphene on silicon photonic devices enables high efficiency electro−optical modulation.…”

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confidence: 99%

Hybrid Integrated Silicon Photonics Based on Nanomaterials

Prete,

Amanti,

Andrini

et al. 2024

Photonics

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“…Thanks to the strong refractive index contrast between the Si core (n Si 3.48 at 1550 nm) and the SiO 2 cladding (n SiO 2 1.44 at 1550 nm) achieved in the siliconon-insulator (SOI) platform, single-mode waveguides with tight bending radii [3,4] can be fabricated. As a result, and because of the SOI compatibility with CMOS processes and the possibility to fabricate low-cost and high-performance optical devices, interest in silicon photonics has continued to grow and covers a wide range of research fields including all-optical processing [5,6], sensing [7,8], metrology [9], and quantum technologies [10,11]. However, an important challenge that remains in silicon photonics is the efficient fiber-to-chip coupling, which originates from the significant dimension difference between the optical fiber [with a mode field diameter (MFD) of 10.4 μm for a standard single-mode fiber (SMF-28)] and the integrated SOI waveguides (which have a typical cross section of 500 nm × 220 nm ) [12].…”

Section: Introductionmentioning

confidence: 99%

High-efficiency reflector-less dual-level silicon photonic grating coupler

Vitali¹,

Bucio²,

Lacava³

et al. 2023

Photon. Res.

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We present the design and experimentally demonstrate a dual-level grating coupler with subdecibel efficiency for a 220 nm thick silicon photonics waveguide which was fabricated starting from a 340 nm silicon-on-insulator wafer. The proposed device consists of two grating levels designed with two different linear apodizations, with opposite chirping signs, and whose period is varied for each scattering unit. A coupling efficiency of −0.8 dB at 1550 nm is experimentally demonstrated, which represents the highest efficiency ever reported in the telecommunications C-band in a single-layer silicon grating structure without the use of any backreflector or index-matching material between the fiber and the grating.

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Recent Progress in Light Polarization Control Schemes for Silicon Integrated Photonics

Zafar,

Pereira

2024

Laser & Photonics Reviews

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Light polarization control is a target in photonics, and this paper provides a comprehensive review of research from various groups on the silicon‐on‐insulator (SOI) platform. It draws comparisons between devices such as polarization splitters (PS), polarizers, and polarization splitters/rotators (PSR). These devices are fabricated using various technologies, including silicon nanowires, ridge waveguides, hybrid plasmonic waveguides, and subwavelength grating (SWG) waveguides. A detailed review of polarizers used as cleanup filters in splitters is initiated. Subsequently, various polarization splitters utilizing asymmetric directional couplers (ADCs), which typically exhibiting low extinction ratios (ERs), are delved. To enhance ERs, a detailed comparison of methods outlined in the literature is provided. One notable method includes integrating on‐chip polarizers at both ports to eliminate unwanted light fractions and achieve exceptionally high ERs. Furthermore, SWG‐based polarizers and splitters commonly face issues with Bragg reflections that can affect other photonic devices and lasers and ways to minimize unwanted polarization back reflections in SWG‐designed polarization control devices are examined. Finally, emerging applications in mid‐infrared (MIR) sensing are explored, highlighting the necessity of polarization rotators for on‐chip transverse electric (TE) operation, since quantum cascade lasers, the primary sources in this range, emitting radiation in the (TM) mode.

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Polarization Control in Integrated Graphene-Silicon Quantum Photonics Waveguides

Cited by 3 publications

References 33 publications

Hybrid Integrated Silicon Photonics Based on Nanomaterials

Hybrid Integrated Silicon Photonics Based on Nanomaterials

High-efficiency reflector-less dual-level silicon photonic grating coupler

Recent Progress in Light Polarization Control Schemes for Silicon Integrated Photonics

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