Plasmonic Modulators for Microwave Photonics Applications

Burla, Maurizio; Bonjour, Romain; Salamin, Yannick; Abrecht, Felix C.; Haffner, Christian; Heni, Wolfgang; Hoessbacher, Claudia; Baeuerle, Benedikt; Josten, Arne; Fedoryshyn, Yuriy; Johnston, Peter V.; Elder, Delwin L.; Dalton, Larry R.; Leuthold, Juerg

doi:10.1364/acpc.2017.su1e.2

Cited by 3 publications

(2 citation statements)

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“…Reference [21] is a survey dedicated to hybrid radio frequency, FSO systems with THz/O links, considering it as a viable approach for equipping future THz wireless communication. Integrated microwave photonics (IMWP) in the THz range [87], have been also proposed as an enabling approach for equipping 5G wireless systems, by providing optical signal generation and distribution of mm waves towards antenna terminals [88], dynamic filtering [89], optical control of antenna arrays [90], and many more other functions [91]. 5G applications, however, pose very stringent requirements on the speed of IMWP circuits, for processing mm waves or even sub-THz frequencies, in order to access the multi-GHz bandwidths required for high data rates [91].…”

Section: Beyond 5g Network: Towards To Thz Band Communicationsmentioning

confidence: 99%

Key Roles of Plasmonics in Wireless THz Nanocommunications—A Survey

Lallas

2019

Applied Sciences

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Wireless data traffic has experienced an unprecedented boost in past years, and according to data traffic forecasts, within a decade, it is expected to compete sufficiently with wired broadband infrastructure. Therefore, the use of even higher carrier frequency bands in the THz range, via adoption of new technologies to equip future THz band wireless communication systems at the nanoscale is required, in order to accommodate a variety of applications, that would satisfy the ever increasing user demands of higher data rates. Certain wireless applications such as 5G and beyond communications, network on chip system architectures, and nanosensor networks, will no longer satisfy speed and latency demands with existing technologies and system architectures. Apart from conventional CMOS technology, and the already tested, still promising though, photonic technology, other technologies and materials such as plasmonics with graphene respectively, may offer a viable infrastructure solution on existing THz technology challenges. This survey paper is a thorough investigation on the current and beyond state of the art plasmonic system implementation for THz communications, by providing in-depth reference material, highlighting the fundamental aspects of plasmonic technology roles in future THz band wireless communication and THz wireless applications, that will define future demands coping with users' needs. Appl. Sci. 2019, 9, 5488 2 of 34 communications, researchers have been focused on taking advantage of higher regions in the radio spectrum, pointing to the THz band communication and infrastructure, as a promising solution to equip 5G plus networks, thus enabling efficient operation of bandwidth hungry applications, that are not feasible at the moment with current infrastructure.Wireless NoC (WiNoC) [5] with its inherent broadcast capability, appears as a promising approach to overcome all abovementioned bottlenecks of ancestor technologies. Ultra small miniature sizes of plasmon based antennas and other nanolink components as well, with considerably much less wiring, are the desired features of this technology, in order to enable the integration of one or multiple antennas per core, paving the way for dense, scalable NoC schemes, as required by future applications. Graphene based WiNoCs (GWiNoCs) is probably the most updated promising approach for THz nanoscale wireless communications, and it is therefore considered to be the basis for implementing future on chip network architectures. Alternatively, hybrid optical wireless schemes, may be also proved to be a promising NoC solution [6], by combining the best assets of these two worlds: low loss dielectric waveguide media, and miniature sized plasmonic material oscillating at THz rates.Last, wireless nanosensor networks (WNSNs) is another established THz nanoscale application, with basic similarities as in WiNoCs, such as core to core or to memory communication, but also with other unique characteristic types of communication, mainly between nanosensors and nanomachin...

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Section: Beyond 5g Network: Towards To Thz Band Communicationsmentioning

confidence: 99%

Key Roles of Plasmonics in Wireless THz Nanocommunications—A Survey

Lallas

2019

Applied Sciences

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“…Moreover, such a combination merges the ability of silicon nanoantennas to achieve long-reach wireless communications, reconfigurable interconnects, beam-shaping elements, and lab-on-a-chip devices with the advantages of plasmonic structures for ultrafast data conversion, light concentration and manipulation. Finally, this hybrid configuration might enable the implementation of new sensing applications and microwave plasmonic devices in the THz band. , …”

Section: Discussionmentioning

confidence: 99%

All-Silicon On-Chip Optical Nanoantennas as Efficient Interfaces for Plasmonic Devices

et al. 2019

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Plasmonic technology promises to unfold new advanced on-chip functionalities with direct applications in photovoltaics, light matter interaction and the miniaturization of optical interconnects at the nanoscale. In this scenario, it is crucial to efficiently drive light to/from plasmonic devices. However, typically-used plasmonic wires introduce prohibitive losses, hampering their use for many applications. Recently, plasmonic nanoantennas have been proposed to overcome this drawback, not only providing a notable loss reduction, but also an enhanced on-chip flexibility and reconfigurability. Nevertheless, these devices still perform poorly for long-reach interconnects, owing to their lowdirective radiation and low efficiency. Here, we introduce a class of slot-waveguide-based silicon nanoantennas that lift all these limitations, and show their feasibility to be connected directly and efficiently to plasmonic devices. To test the performance of these antennae, an on-chip plasmonic-dielectric interconnect is experimentally demonstrated over distances as high as 100 µm. In an outstanding manner, our wireless scheme clearly outperforms previous plasmonic approaches in terms of link efficiency and effective gain. This work paves the way to the development of ultra-fast onchip wireless reconfigurable and flexible interconnects, and additionally opens new avenues in optical manipulation and sensing applications. Introduction: Plasmonic devices have enabled the development of important applications in fields such as spectroscopy, near-field optical microscopy or biosensing (1) thanks to their unique ability to engineer light at the nanoscale. Within integrated on-chip communications, plasmonic approaches offer the potential for the realization of ultra-compact low-cost devices (modulators, detectors or nanoscale chip sources (1)) able to perform at very high operation speeds with a low power consumption (2). The natural way for interconnecting these devices on the optical chip is the use of metallic nanowires. Nevertheless, guiding light over long distances via plasmonic waveguides results in prohibitive propagation losses (3), (4). An alternative to mitigate this loss relies on the use of dielectric couplers (5), able to interface plasmonic devices with typical silicon waveguides. In contrast, these dielectric-metallic wired schemes still provide stringent limitations in terms of flexibility and reconfigurability at the photonic layer (6). Recently, the emergence of plasmonic nanoantennas (7), (8), (9), (10) has also demonstrated their suitability to reduce propagation losses as compared to metallic nanowires (3). This allows, for instance, the implementation of unguided interconnects with interferenceless crossing paths on the same layer (thus avoiding multilayer geometries (9)), compact reconfigurable devices and more flexible on-chip networks (6), (10), (11). These features lessen the presence of waveguides, leading to simpler on-chip layouts (6), (11). Additionally, the interaction with the medium at far-field dista...

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