Lukas Lorenz

Lukas Lorenz
Technische Universität Dresden | TUD · Electronics Packaging Laboratory

Doctor of Engineering

About

31
Publications
1,116
Reads
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155
Citations
Citations since 2017
24 Research Items
148 Citations
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2017201820192020202120222023010203040
2017201820192020202120222023010203040

Publications

Publications (31)
Article
In this article, we give an overview of the development of an asymmetric optical bus coupler (AOBC) from the theoretical basis, the optical continuous wave, and bit rate performance to the implementation in a 3-D-Opto-MID package. The coupler allows for an interruption-free and bidirectional connection between two multimode waveguides, with differe...
Conference Paper
Printing polymer optical waveguides by means of combined printing processes has proven to be a challenging but effective way of producing waveguides with a loss less than 0.3dB/cm. In order to evaluate the optical performance of the produced waveguides, optical simulations have been carried out. In this work we show the influence on the optical per...
Article
To improve printing results, a printing form can be functionalized and the material transferring behavior can be adjusted. In this work, a flexographic printing form is divided into three different areas: first the elevated, material transferring structures (1); second the rising edges between the printing form substrate and the elevated structures...
Article
This article presents an innovative way for additive manufacturing of optical multimode waveguides for short range data transmission. By the use of aerosol jet printing between conditioning lines on flexible foils, low cost and low weight polymer optical waveguides can be easily fabricated. The main advantages – compared to other waveguide manufact...
Conference Paper
Recent fabrication methods print polymer optical waveguides (POWs) on three-dimensional carriers. The special geometry of the POWs enables the realisation of an optical ray splitter which is simulated by raytracing using a new bisection-algorithm.
Conference Paper
This paper shows the modeling, simulation and production of polymer optical waveguides using the OPTAVER process. The additive manufactured multimode waveguides with their typical cross-section of a circle shape are of low cost and high-performance.
Article
This contribution discusses technology development for the realization of chip-to-chip interconnection based on flexible optical waveguides. Two approaches for optical coupling between waveguides and active devices are presented. Both approaches built on the planar polymeric optical multimode waveguides integrated on flexible substrates (PEN-foil)....
Article
The research for new production chains in the field of waveguide fabrication is a challenging task. Realizing a cost efficient manufacturing process allows integrating optical data communication in arbitrary structures as for example the wing of an airplane or the car body. The production chain described in this paper contains the design, simulatio...
Article
In this article we present a bidirectional interruption-free multimode waveguide coupler for optical bus systems on board an module level. The principle is based on directional core-core-coupling and allows for adjustable coupling powers by tuning the overlap area. By adding a bending to one of the coupling partners it is possible to obtain specifi...
Article
In this article, we present a coupling concept for an interruption-free asymmetric bidirectional optical bus coupler for board and module level. With this approach, it is possible to connect several electro-optical devices to a single waveguide. A core-to-core connection principle is used, where the cores get into physical contact at their side fac...
Conference Paper
As a tribute to the continuously increasing volume of data traffic, optical waveguides have become a serious alternative to electrical circuitries. The potential of precise spaceresolved strain measurements or the capacity to transmit very large amounts of data are two examples of the beneficial use of optical systems. Apart from the general advant...
Conference Paper
The printing of polymer optical waveguides is part of the current research in functional printing technology. Optimizing the transmission quality and the resolution are key objectives to establish integrated optical data transmission in the industry. The manufacturing of multimode waveguides presented in this work is accomplished by a combination o...
Conference Paper
Goal of the presented work is the development of an optical bus-coupler, which enables easy connection between two waveguides without interrupting the bus. It is possible to realize optical bus systems by connecting several modules onto one waveguide with a core-core-coupler. In this paper we present the concept of a bus-coupler, which is suitable...
Conference Paper
In our work an optical bus-coupler is proposed, which enables easy bidirectional connection between two waveguides without interrupting the bus using a core-to-core coupling principle. With bended waveguides the coupling ratio can be tuned by adjusting the overlap area of the two cores. In order to ensure large overlap areas at short coupling lengt...
Conference Paper
The main package technologies for fiber coupled lasers are single emitter packages such as modified TO-packages or High Heat Load packages. In both cases, the packaging costs are significantly higher than the costs of the single laser diode. Furthermore, the scalability of the optical output power is only possible by varying the input current. Due...
Conference Paper
This paper discusses technology development for integration of parallel optical interconnect on board-level. The interchip link is based on planar polymeric optical multimode waveguides and wafer-level out-of-plane coupling optics. Realized on-board waveguides feature low insertion loss with minimum attenuation coefficient of 0.024 dB/cm. Integrati...
Conference Paper
For sensor systems and data communication, electro optical integration technologies are an auspicious alternative to conventional electronic system integration. To make the photonic integration more attractive compared to electronic integration technologies, packaging concepts are required which are suitable for mass production using standard proce...

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