Polymer Optical Fiber Application Center

Nürnberg, Germany

Polymer Optical Fiber Application Center

Nürnberg, Germany
SEARCH FILTERS
Time filter
Source Type

Becker T.,Polymer Optical Fiber Application Center | Schmauss B.,Friedrich - Alexander - University, Erlangen - Nuremberg | Gehrke M.,Polymer Optical Fiber Application Center | Nkiwane E.,Polymer Optical Fiber Application Center | Ziemann O.,Polymer Optical Fiber Application Center
POF 2016 - 25th International Conference on Plastic Optical Fibres, Conference Proceedings | Year: 2017

We present an analytical model for optical multimode fibers which calculates the angle-dependent power distribution inside the fiber. The model considers the power distribution over the angle to be continuous instead of dealing with discrete modes, which is justifiable for multimode fibers like step-index polymer optical fibers (SI-POF). Based on the power distribution we derive a fully analytical term for the impulse response for different launching conditions. Since the whole approach is analytical, all considered influences can be found in the resulting term. Therefore the model can easily be adjusted to new conditions. Finally, we compare the results with corresponding ray tracing simulations. © The Author(s) 2017.


Becker T.,Polymer Optical Fiber Application Center | Schmauss B.,Friedrich - Alexander - University, Erlangen - Nuremberg | Gehrke M.,Polymer Optical Fiber Application Center | Nkiwane E.,Polymer Optical Fiber Application Center | Ziemann O.,Polymer Optical Fiber Application Center
POF 2016 - 25th International Conference on Plastic Optical Fibres, Conference Proceedings | Year: 2017

Considering an optical fiber as a transmission system, its characteristics can be described via its amplitude and phase response. We investigate the phase response of large core (1 mm) step index polymer optical fiber (SI-POF) under different launching conditions. Due to modal dispersion, the shape of the phase response strongly depends on the excited modes of the fiber. We compare the measured phase responses of a 50 m POF with the theoretical ones obtained with an analytical model which considers modal dispersion but neglects scattering and attenuation. It can be seen that the experimental results are in good agreement with the theoretical predictions. © The Author(s) 2017.


Vinogradov J.,Polymer Optical Fiber Application Center | Kruglov R.,Polymer Optical Fiber Application Center | Chi K.-L.,National Central University | Shi J.-W.,National Central University | And 3 more authors.
IEEE Photonics Technology Letters | Year: 2014

We report a high-speed data transmission over a 1-mm diameter step-index polymer optical fiber (SI-POF) with GaN light-emitting diodes (LEDs) operating at 435 and 475 nm. The modulation bandwidths of the LEDs at 40 mA were 180 and 300 MHz, respectively. A maximum bit rate of 5.5 Gb/s was achieved with a 475-nm GaN LED at -1.8-dBm fiber-coupled power over a 1-m SI-POF employing 4-pulse-amplitude modulation format. Compared with the performance of a high-speed red resonant-cavity LED under the same test setup, the chromatic dispersion reduces the potential of the GaN LED-based system when the transmission distance is longer than 30 m. © 1989-2012 IEEE.


Dengler P.,Polymer Optical Fiber Application Center | Schlachter H.,Nurnberg University of Applied Sciences | Lippenberger M.,Polymer Optical Fiber Application Center | Ziemann O.,Polymer Optical Fiber Application Center
POF 2016 - 25th International Conference on Plastic Optical Fibres, Conference Proceedings | Year: 2017

In this paper we present the use of a light-responsive smart material as actuating element in a UV-light driven switch. Especially under environmental conditions where a strong electromagnetic field is present a complete galvanic decoupling is necessary to guarantee secure operation. The elementary feature of this optical relay is the actuator itself transforming UV-light directly to mechanical motion. So the relay can be operated without any additional circuits relying on semiconductor technology. © The Author(s) 2017.


Loquai S.,Polymer Optical Fiber Application Center | Bunge C.-A.,Deutsche Telekom AG | Ziemann O.,Polymer Optical Fiber Application Center | Schmauss B.,University of Erlangen Narnberg | Kruglov R.,Polymer Optical Fiber Application Center
Journal of Lightwave Technology | Year: 2010

A fully analytic analysis of the frequency response of a homo-structure p-i-n photodiode is developed to characterize high-speed large-area p-i-n photodiodes. Therefore, the model can easily be implemented in mathematical simulation tools for system analysis. The model accurately describes drift-, diffusion- and parasitic effects and has been experimentally verified up to 3 GHz for a variety of different wavelength from 405 nm to 850 nm far beyond the 3 dB cutoff frequency (up to -35 dB). © 2010 IEEE.


Ziemann O.,Polymer Optical Fiber Application Center | Poisel H.,Polymer Optical Fiber Application Center
24th International Conference on Plastic Optical Fibers, POF 2015 - Conference Proceedings | Year: 2015

The POF-AC Nürnberg was founded in September of 2000. This year, we can look back on one and a half decade of successful work in different areas of the application of POF and other large diameter optical fibers. The maximum bit rate on 1 mm core diameter POF increased from 1 Gbit/s to 40 Gbit/s over this period. Wavelength multiplexing, bend insensitive multi core POF and high bit rate optical rotary joints are examples for the development of the POF technology.


Fischer J.,Polymer Optical Fiber Application Center | Luber M.,Polymer Optical Fiber Application Center | Ziemann O.,Polymer Optical Fiber Application Center
24th International Conference on Plastic Optical Fibers, POF 2015 - Conference Proceedings | Year: 2015

This paper describes the measurement and the influence of the ratio between lateral light hitting a multimode fiber and light captured in the fiber, the so called coupling efficiency. This coupling efficiency depends among others on the position along the fiber axis, the wavelength and the angle of the incoming rays with respect to the fiber axis. For the measurement of the coupling efficiency, the lateral light is coupled over the entire solid angle into the fiber using an integrating sphere. For the measurement of the influence of the angle referring to the fiber axis a collimated laser beam is used. The determination of the wavelength dependence was achieved by using different light sources or by measuring the different spectra of the incoming lateral light and the spectrum of the captured light at the fiber end.


Schueppert M.,University of Applied Sciences of Leipzig | Kruglov R.,Polymer Optical Fiber Application Center | Loquai S.,Polymer Optical Fiber Application Center | Bunge C.-A.,University of Applied Sciences of Leipzig
IEEE Photonics Technology Letters | Year: 2015

Nonlinear signal distortions originated in a resonant-cavity light emitting diode (RC-LED) are investigated. Using laboratory measurements and offline processing, the RC-LED's nonlinear behavior is investigated for multilevel pulse amplitude modulation (M-PAM) and carrierless amplitude and phase modulation with the help of a Volterra-series expansion. Dynamic nonlinearities are identified which are strongly dependent on the modulation format used. The impact of these nonlinearities is then investigated for a short-range gigabit transmission link, consisting of a RC-LED and 30 m of step-index polymer optical fiber. It is shown that dynamic nonlinearities are a dominat source of signal impairments when using M-PAM at lower baud rates and that the performance of M-PAM can be considerably improved with a Volterra-series extension of a decision feedback equalizer (DFE) compared with a regular DFE. © 1989-2012 IEEE.


Xu J.,Polymer Optical Fiber Application Center | Bloos M.,Polymer Optical Fiber Application Center | Poisel H.,Polymer Optical Fiber Application Center
POF 2014 - 23rd International Conference on Plastic Optical Fibers, Proceedings | Year: 2014

We evaluate how the computation of connector losses is influenced by an improved set of information of the radiation pattern at the end of polymer optical fibers with different lengths. Applied in a raytracing software this set of rays is used to compute the coupling efficiencies for lateral-, longitudinal- and angular offsets of standard 1 mm SI-POF under different launching conditions. The results are compared to previously published values using the far field distribution only and partly to concrete measurements. © 2014 ICPOF.


Joncic M.,Hochschule Harz University of Applied Sciences | Kruglov R.,Polymer Optical Fiber Application Center | Haupt M.,Hochschule Harz University of Applied Sciences | Caspary R.,TU Braunschweig | And 2 more authors.
IEEE Photonics Technology Letters | Year: 2014

Wavelength division multiplexing (WDM) is a promising solution for upgrading the capacity of polymer optical fiber (POF)-based telecommunication networks. In this letter, we report on the successful realization of a four-channel high-speed WDM transmission system for 1-mm diameter step-index POF (SI-POF). For combining the optical signals coming from 405-, 450-, 515-, and 639-nm laser diodes onto 1-mm SI-POF, a (4 × 1) coupler with low insertion loss (IL) has been developed. To spatially separate different wavelength channels, a four-channel demultiplexer with low IL (<5.7 dB) and high (non)adjacent channel isolation (>30 dB) has been realized in bulk optics. The 14.77-Gb/s data transmission based on the offline-processed discrete multitone modulation technique has been demonstrated over 50-m SI-POF at a bit-error rate of (10-3). © 2014 IEEE.

Loading Polymer Optical Fiber Application Center collaborators
Loading Polymer Optical Fiber Application Center collaborators