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The photonic integrated circuits are required in the next generations of coherent terabit optical communications. The software tools for automated adjustment and coupling of optical fiber arrays to photonic integrated circuits has been developed. The obtained results are needed in final production phase in the technology process of photonic integrated circuits packaging.
We present the technological verification of a size-optimized 160-channel, 50-GHz silicon nitride-based AWG-spectrometer. The spectrometer was designed for TM-polarized light with a central wavelength of 850 nm applying our proprietary “AWG-Parameters” tool. For the simulations of AWG layout, the WDM PHASAR photonics tool from Optiwave was used. The simulated results show satisfying optical properties of the designed AWG-spectrometer. However, the high-channel count causes a large AWG size with standard design approaches. To solve this problem we designed a special taper enabling the reduction of AWG structure by about 15% while keeping the same optical properties. The AWG design was fabricated and the measured spectra not only confirm the proposed size-reduction but also the improvement of optical properties of the size-optimized AWG.
Introducing 3D sub-micrometer technologies based on polymers opened new possibilities of design and fabrication of photonic devices and components in 3D arrangement. 3D laser lithography is direct writing process based on two photon polymerization exhibiting high accuracy and versatility, where numerous resists and even polymer ceramic mixtures can be used. We present design and simulation of polymer based photonic components with a focus on arrayed waveguide gratings (AWG) based on optical multiplexers/demultiplexers and optical splitters. All optical components were designed for 1550 nm operating wavelength, applying two commercial photonics tools. This study creates a basis for the design of optical components in 3D arrangement, which will be fabricated by 3D laser lithography.
Ursprünglich wurde für das K-Projekt „LiTech“ eine mobile und intuitive Robotersteuerung – mit Touchbedienung und Augmented Reality – programmiert. Ziel war es, einen Industrieroboter spontan steuern zu können, mit besonderem Augenmerk auf Laienfreundlichkeit. Das System besteht aus einem Roboter und einem PC der als Bildschirm eine mit kapazitivem Touch ausgestattete und von einem Projektor bespielte Glasscheibe hat. Daten werden als String über eine serielle Schnittstelle übermittelt. Zur Erforschung der Nutzerfreundlichkeit werden Bälle auf einer Ebene hin- und herbewegt. Zur Cloud-Datenauswertung und Erstellung der Visualisierung wurden mittlerweile weitere Forschungszentren der FH Vorarlberg eingebunden. Im laufenden Wintersemester arbeitet ein Praktikant aus Südamerika an der Erweiterung auf den kompletten 3D-Raum mit möglicher Implementierung einer Gestensteuerung. Ziel des Beitrags ist es, den Versuchsaufbau und die Steuerung des Roboters zu beschreiben sowie geplante Weiterentwicklungen aufzuzeigen.
During two studies the influence of technologies on sleep were analyzed. The first one is about the effect of light on the circadian rhythm and as a consequence on sleep quality of persons in a vegetative state. The second one, which is still running, surveys the influence of several technologies on the sleep of elderly people living in a nursing home.