The first transparent Optical-subTHz-Optical link providing record-high line-rates of 240 and 190 Gbit/s over distances from 5 to 115 m was recently demonstrated. The link has been based on a direct data-conversion from optical to subTHz using a > 500 GHz plasmonic Mach-Zehnder modulator. We discuss the potential of plasmonic devices in subTHz wireless links to efficiently bridge optical fiber networks.
All envisaged practical implementations of cryogenic processors, including quantum computers and classical processors based on single flux quantum (SFQ) signals, require massive data transfer from and to classical high performance computers (HPCs). Cryogenic computing has recently become a very hot topic, including superconducting quantum computers (QCs), and classical processors based on single flux quantum (SFQ) signals. All envisaged practical implementations of cryogenic processors require massive data transfer from and to classical HPCs. The project aCryComm aims to develop building blocks for cryogenic photonics interconnects and eventually enable this challenging data transfer. The long-term goal is the development of an open-access platform to integrate classical optical interfaces based on low-loss silicon photonics, plasmonics, and nano light sources together with superconducting photonic and electronic devices, including SFQ-based co-processors for HPCs and for QCs.
We recently demonstrated modulators based on plasmonic technology displaying a flat frequency response reaching 500 GHz, high linearity and power handling. We discuss their potential for extending microwave photonics (MWP) applications to the sub-THz range, demonstrating analog photonic links with bandwidth in excess of 100 GHz and the capability of direct mm-wave to optical conversion.
In order to support the 1,000 times increase in data rates expected from next-generation wireless communications (5G), radically novel technological approaches will be needed. Integrated microwave photonics (IMWP) techniques are identified as an enabling technology for 5G, thanks to their potential to improve the performance of electronics by leveraging the broadband characteristics and flexibility of operation of photonic integrated circuits. Relevant applications of IMWP are optical signal generation and distribution of mm-waves towards antenna terminals, optical control of antenna arrays, frequency-reconfigurable filtering, and more. The rapidly growing field of plasmonics has shown a breakthrough in performance for optical modulators with fast operation (500 GHz) and ultra-compact footprint (10s μm2). This paper reports recent achievements on the use of integrated plasmonic devices for millimeter-wave signal conversion and processing for next-generation wireless systems.
Waveguide Bragg grating (WBG) devices on silicon constitute a particularly attractive solution for optical and microwave photonics (MWP) signal processing, thanks to their flexibility in producing arbitrarily defined amplitude and phase responses, by directly acting on perturbations of the grating profile, together with their high compactness compared to other integrated photonic filters.
This talk will give a brief overview of advances in the field of integrated WBGs applied to microwave photonics and optical signal processing, with emphasis on a number of recent demonstrations. Examples of applications include THz‐bandwidth optical pulse shapers, wideband tunable RF filters, broadband true‐time‐delay lines and phase shifters, and instantaneous frequency measurement systems on‐chip.
In this article a selection of highlights of the TriPleX™ technology of LioniX is given. The basic waveguide technology is explained with recent benchmark measurements done by University California Santa Barbara (UCSB) and University Twente (UT-TE). In order to show the low loss transparency over a wide wavelength range three examples of applications in different wavelength regimes are described in more detail. These are the Integrated Laser Beam Combiner (ILBC) of XiO Photonics in the visible light, a ringresonator sensing platform of LioniX around 850 nm and a phased array antenna with an Optical Beam Forming Network in the 1550 nm band. Furthermore it is shown that the technology is easily accessible via Multi Project Wafer Runs for which the infrastructure and design libraries are also set up.
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