Aktuelle Publikationen

The degenerate modes of a few-mode fiber retain entanglement and allow for distribution over 50-km of single-mode fibers, paving the way for future research towards multi-port bidirectional beam splitters with a consistent coupling ratio across...

In this work, we investigate the effectiveness of LPM in detecting physical-layer attacks. A detailed simulative analysis is conducted for fiber tapping, addressing aspects such as monitoring implementation, security vulnerabilities, and...

We present a qubit-based clock drift correction method with low computational requirements, that demonstrates a performance equal to a clock drift correction via a dedicated clock channel. Our method enables stable long-term operation as well as...

Live rerouting of quantum key distribution links poses new synchronization challenges. We demonstrate the seamless handling of multi-minute channel interruptions and fiber length changes exceeding 100 km during live system operation and over...

A catalytic plate reactor derived from the design of conventional plate heat exchangers was used for the continuous and dynamic dehydrogenation of perhydro benzyltoluene, a LOHC. The surface of heat exchanger plates has been catalytically...

The predictive capabilities of Deep Neural Networks (DNNs) are well-established, yet the underlying mechanisms driving these predictions often remain opaque. The advent of Explainable Artificial Intelligence (XAI) has introduced novel...

This work presents the first study of a machine learning-based quality-of-transmission (QoT) estimator using synthetic and experimental datasets from four different organizations, including live network data. It investigates the feasibility of a...

This paper presents an LLM-based mediator for disaggregated optical networks, designed to address inconsistencies in TAPI interpretation and generation. By integrating TAPI-YANG models, shared TAPI context, and advanced prompting, it enables a...

This paper proposes Adaptive S-RISNet, a scalable RIS configuration framework that leverages statistical CSI and change-point detection to update phase shifts only when necessary. The method achieves near-optimal performance while drastically...

We demonstrate a point-to-point optical wireless communication link for fixed wireless access scenarios using a multiaperture VCSEL. At 5 meters distance, a record net data rate of 67.8 Gbit/s is reached after LDPC FEC.

Explore how 28 and 160 GHz radio channels really behave in an industrial-style open office. Using angle-resolved measurements at 135 positions, this paper extracts path loss, delay and angular spreads, validates 3GPP models, and quantifies...

Beam-steered channel measurements were analyzed and evaluated on the basis of identified beam pair realizations regarding MIMO capabilities, macro-diversity gains and blockage effects for a multi-transmitter industrial sub-terahertz communication...

For the first time, we demonstrate LiFi transmission with a net data rate of 11.5 Gbit/s using a transmitter with an optical power of 660 mW. Our results pave the way towards next-generation LiFi systems based on high-power VCSEL-arrays.

We present the first silicon nitride microring aptasensor for detecting the cancer biomarker uP! A on a photonic integrated chip. Combining high optical sensitivity with aptamer-based selectivity, the sensor distinguishes uPA levels and is...

Accurate and reliable gesture recognition is a central problem in human-computer interaction (HCI). Many applications that make use of gesture recognition call for mobile devices with reduced power consumption, weight and form factors. Recent...

We present a microwave photonic RF comb generator based on a quartz-stabilized, ultra-low phase noise fs-pulse laser in combination with high-speed RF waveguide coupled photodetectors. A generated microwave tone at 270 GHz obtains a low phase...

This Comment analyzes a global online landslide classification challenge to examine whether AI competitions can help participants engage with international standards. The results show that while technical innovation was strong, awareness of...

Real-time demonstration of an ultra-broadband (4 GHz) integrated sensing and communications (ISAC) system operating at 160 GHz in the upper D-band. The demonstration showcased quasi-monostatic sensing and a 4.9 Gbit/s communication link,...

Dielectric lens characterization in sub-THz frequencies requires not only high precision positioning of the feed antenna, but also the possibility to select multiple relative positions between the lens and the feed, especially in the case of...

We have extended current 5G beamforming to reduce self-interference for integrated sensing and communication. Our principled beam codebook design follows novel analytical bounds to guarantee sensing performance alongside broadband...

Next generation coherent transceivers are expected to offer capacities of 1600 Gbps per wavelength, potentially requiring single-carrier symbol rates of 240 GBd or more. The analysis of higher order physical layer effects at these elevated symbol...

The telecommunications industry is undergoing a paradigm shift toward open, disaggregated, and automated networks, necessitating a secure, regulated, and sovereign approach to telemetry data sharing among stakeholders. This paper introduces a...

This paper presents the development and implementation of a versatile ad-hoc metropolitan-range quantum key distribution (QKD) network. The approach presented integrates various types of physical channels and QKD protocols, and a mix of trusted...

An architecture for neuromorphic device-edge co-inference, with application to radio sensing for environment mapping in networked robotics scenarios. The developed demonstration setup integrates a radar sensor, radar preprocessing unit and...

An enhanced digital self-interference cancellation technique for in-band full-duplex (FD) wireless communications, focusing on overcoming challenges from nonlinear distortions. The method uses a kernelized adaptive projected subgradient method...

Design and implementation of novel D-band (sub-THz) dual-channel (MIMO hybrid) beamforming wireless front-ends operating between 150 and 170 GHz. The system utilizes analog beamforming networks with two 16×16 microstrip Rotman lenses and dual...

A hybrid analog beamforming at D-band is demonstrated by integration between an antenna array and a dielectric lens. The beam is collimated on one plane by the antenna array, and on the other by the elliptical lens profile. The antenna element is...

We make a deep dive into the fabrication and testing of a photonic reservoir with digital readout. The developed neural network was tested for the identification of modulation formats at 32 Gbaud transmission rates, where it achieved a near-100%...

Experience next-generation reconfigurable intelligent surfaces with a novel dual-polarized 2-bit RIS unit cell offering exceptional 55 dB cross-polarization isolation and 400 MHz bandwidth at 15 GHz. Featuring varactor-loaded bowtie elements and...

This study presents a hyperspectral light field system for intraoperative tissue oxygen saturation (????????2) analysis and visualization. We present a correlation method for determining SO2 saturation with low computational demands. We...