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POF over WDM -Beyond the Dispersion Limit

Journal of Electrical Engineering 2018年第2期6卷 70-74页

作者： U. H. P. Fischer S. Holl M. Haupt M. Joncic Harz University of Applied Sciences Wernigerode 38855 Germany sicoya gmbh Berlin 12489 Germany

Data communication over POFs （polymer optical fibers） is limited to only one channel for data transmission. Therefore the bandwidth is strongly restricted. By using more than one channel, it is possible to break through the limit. This technique is called WDM （wavelength division multiplexing）. It uses different wavelengths in the visible spectrum to transmit data parallel over one fiber. Two components are essential for this technology： A MUX （multiplexer） and a DEMUX （demultiplexer）. The multiplexer collects the light of the different sources to one fiber and the demultiplexer separates the light at the end of the fiber into the different fiber output ports. In this paper, we propose spectral grids in the visible spectrum, which are compatible with existing standards like ITU recommendations for WDM networks. Additionally, results of a demonstrator of an integrated polymeric demultiplexer produced with injection molding are presented. The paper discusses the results of the different development steps, the measurements done with the first demonstrator and the challenges related to the injection molding process.

关键词： POF WDM (de-)multiplexer spectral grid injection molding.

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High-speed integrated QKD system

引用

Photonics Research 2023年第6期11卷 1007-1014页

作者： REBECKA SAX ALBERTO BOARON GIANLUCA BOSO SIMONE ATZENI ANDREA CRESPI FADRI GRÜNENFELDER DAVIDE RUSCA AWS AL-SAADI DANILO BRONZI SEBASTIAN KUPIJAI HANJO RHEE ROBERTO OSELLAME HUGO ZBINDEN Group of Applied Physics University of Geneva1205 GenèveSwitzerland ID Quantique SA 1227 GenèveSwitzerland Institute for Photonics and Nanotechnologies and NO-IFN CNR-IFN20133 MilanoItaly Dipartimento di Fisica Politecnico di Milano20133 MilanoItaly sicoya gmbh 12489 BerlinGermany

Quantum key distribution(QKD)is nowadays a well-established method for generating secret keys at a distance in an information-theoretically secure way,as the secrecy of QKD relies on the laws of quantum physics and not on computational *** order to industrialize QKD,low-cost,mass-manufactured,and practical QKD setups are ***,photonic and electronic integration of the sender's and receiver's respective components is currently in the *** we present a high-speed(2.5 GHz)integrated QKD setup featuring a transmitter chip in silicon photonics allowing for high-speed modulation and accurate state preparation,as well as a polarization-independent low-loss receiver chip in aluminum borosilicate glass fabricated by the femtosecond laser micromachining *** system achieves raw bit error rates,quantum bit error rates,and secret key rates equivalent to a much more complex state-of-the-art setup based on discrete components[*** et al.,***.121,190502(2018)].

关键词： technique QKD polarization

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