Unterborsch, G., Kroh, M., Honecker, J., Steffan, A.G., Tsianos, G., ...
A DPSK receiver concept using flipchip hybrid integration of InP photodetectors on SOI boards with optical decoder is presented. Horizontal waveguiding enables low-cost production for high data rates.
Generation of new frequencies by pulse splitting (2007)
Demircan, A., Kroh, M., Hüttl, B., Bandelow, U.
We present a pulse splitting mechanism by third-order dispersion in the normal dispersion regime, which leads to the excitation of new frequency components on the red side of the pulse spectrum. We...
Berger, J., Börner, C., Dietrich, E., Ferber, S., ...
Über die Aufgaben, den Ablauf und die Ergebnisse eines öffentlich geförderten Forschungprojektes zur Zeitmultiplextechnik (TDM, time division multiplexing) für Datenraten von 160 bis 2560 Gbit/s...
Single channel 1.28 Tbit/s and 2.56 Tbit/s DQPSK transmission (2006)
Weber, H.G., Ferber, S., Kroh, M., Schmidt-Langhorst, C., Ludwig, R., Marembert, V., ...
Ultrahigh-speed OTDM-transmission technology (2006)
Weber, H.G., Ludwig, R., Ferber, S., Schmidt-Langhorst, C., Kroh, M., Marembert, V., ...
This paper reviews ultrahigh-speed data transmission in optical fibers based on optical time division multiplexing (OTDM) transmission technology. Optical signal processing in the transmitter and...
Compression limit by third-order dispersion in the normal dispersion regime (2006)
Demircan, A., Kroh, M., Bandelow, U., Hüttl, B.
Broadband continua at gigahertz rates generated in high-nonlinear dispersion-flattened fibers in the normal dispersion regime near the zero-dispersion wavelength can be used for a subsequent...
Investigation of fiber based gates for time division demultiplexing up to 640 Gbit/s (2006)
Marembert, V., Schubert, C., Schmidt-Langhorst, C., Kroh, M., Ferber, S., Weber, H.G.
We experimentally investigate the switching performance of interferometric gates based on highly nonlinear fiber (HNLF), a Kerr- gate and a nonlinear optical loop mirror. Switching windows are...
Kroh, M., Ferber, S., Schmidt-Langhorst, C., Marembert, V., Schubert, C., Ludwig, R., ...
A transmitter capable of producing 400 fs phase coherent pulses is reported. The feasibility is shown in an OTDM transmission experiment of a single-polarization 640 Gbit/s DPSK signal over 2×80 km...
Asking the right questions: a final word on the transnational business community (2006)
Eijk, C. Van Der, Brug, W. Van Der, Kroh, M., Franklin, M.N.
Kroh, M., Hüttl, B., Ferber, S.
A 37.6GHz pulse train is generated by a monolithic semiconductor mode-locked laser and subsequent pulse compression with pulse width (FWHM) of 400fs, a peak-to-pedestal ratio of >40dB and a timing...
160 Gbit/s transmission with long-term stability (2005)
Ferber, S., Schmidt-Langhorst, C., Ludwig, R., Boerner, C., Schubert, C., Marembert, V., ...
We describe a transmission system having a data rate of 160 Gbit/s, based on the RZ-DPSK modulation format. The 160 Gbit/s single-polarization signal is generated by optical time division...
Ferber, S., Schmidt-Langhorst, C., Ludwig, R., Boerner, C., Schubert, C., Marembert, V., ...
We describe a transmission system having a data rate of 160 Gbit/s based on the RZ-DPSK modulation format. The 160 Gbit/s single-polarization signal is generated by optical time division multiplexing...
160 Gbit/s DPSK transmission over 320 km fibre link with high long-term stability (2005)
Ferber, S., Ludwig, R., Boerner, C., Schubert, C., Schmidt-Langhorst, C., Kroh, M., ...
Long-term BER measurements (10 h) of a single-channel 160 Gbit/s transmission over 4/spl times/80 km high-dispersion fibre are reported, using a single polarisation signal, RZ-DPSK coding and EDFA...
40 GHz semiconductor mode-locked laser pulse source for 160 Gbit/s RZ-DPSK data transmission (2005)
Schubert, C., Ferber, S., Kroh, M., Schmidt-Langhorst, C., Ludwig, R., Hüttl, B., ...
We report on a monolithically integrated mode-locked semiconductor laser with 40 GHz repetition rate, suitable for RZ-DPSK transmission. The performance of the source is demonstrated in a 160 Gbit/s...
Single channel 1.28 Tbit/s and 2.56 Tbit/s DQPSK transmission (2005)
Weber, H.G., Ferber, S., Kroh, M., Schmidt-Langhorst, C., Ludwig, R., Marembert, V., ...
Optical 40 GHz pulse source module based on a monolithically integrated mode locked DBR laser (2005)
160 Gbit/s transmission systems, ready for operation? (2005)
Ludwig, R., Ferber, S., Boerner, C., Schubert, C., Schmidt-Langhorst, C., Kroh, M., ...
Technologies enabling ultrahigh speed transmission (2005)
Ludwig, R., Ferber, S., Boerner, C., Schubert, C., Schmidt-Langhorst, C., Kroh, M., ...
Ultrafast technologies in 160 Gbit/s transmission systems (2004)
Schmidt-Langhorst, C., Schubert, C., Boerner, C., Ferber, S., Ludwig, R., Berger, J., ...
Today, commercial fiber optical transmission systems are operated at a data rate of 10 or 40 Gbit/s per wavelength channel. The optical time division multiplexing (OTDM) technique allows for the...
Noise performance of mode-locked 40 GHz pulse source modules (2003)
Huettl, B., Kaiser, R., Kroh, M., Rehbein, W., Stolpe, H., Fidorra, S., ...
The implementation of high capacity optical communication networks, based on WDM and high speed (O)TDM technologies, needs high performance and low cost high speed transmitters in the future....
Repetition rate and wavelength tuning of monolithic 40 GHz mode-locked lasers based on InP (2003)
Kaiser, R., Hüttl, B., Rehbein, W., Stolpe, H., Heidrich, H., Fidorra, S., ...
Repetition rate and wavelength tuning of monolithic 40 GHz InP-based pulse lasers are investigated experimentally. 2 ps pulses with low timing jitter at large locking bandwidth are observed over a...
Investigations on phase noise in a semiconductor mode-locked laser (2003)
Kroh, M., Kueller, L., Ludwig, L., Schmidt, C., Weber, H.G.
Phase noise in an external cavity semiconductor mode-locked laser is investigated in view of the application of this pulse source for high bit rate data transmission, ultrafast switching and optical...
Monolithic mode-locked laser on GaInAsP/InP for 160 Gb/s TDM (2003)
Hüttl, B., Kaiser, R., Boczianowski, F., Fidorra, S., Heidrich, H., Jacumeit, G., ...
Mode-locked laser OEICs on GaInAsP/InP for 160 Gb/s application in hybrid mode-locking operation are demonstrated with 40 GHz repetition rate, 2.4 ps pulse length, 230 fs timing jitter, and >1 mW...
Yvind, K., Skovgaard, P.M.W., Mork, J., Hanberg, J., Kroh, M.
We have experimentally investigated the performance of external cavity mode-locked semiconductor lasers employing reverse biased saturable absorbers. We have measured the magnitude of trailing pulses...
Ludwig, R., Sizmann, A., Feiste, U., Schubert, C., Kroh, M., Weinert, C.M., ...
We report on the application of a highly asymmetric nonlinear optical loop mirror (NOLM) for noise reduction and improvement of the system performance in 10-40 Gbit/s transmission experiments. The...
High bit rate OTDM-transmission on standard fibre (2001)
Weinert, C.M., Berger, J., Feiste, U., Hilliger, E., Konrad, B., Kroh, M., ...
We describe experimental and numerical studies on high bit rate, single span transmission system over a length of 160 km without amplifiers in the link (unrepeatered). From these studies we revealed...
Kroh, M., Miki-Hirosige, H., Rosen, W., Loewus, F.
When detached flowers or isolated pistils of Lilium longiflorum are given myoinositol-U-14C or -2-3H as dilute solution through the severed pedicel, label is quickly distributed by the vascular...
Incorporation of Label into Pollen Tube Walls from Myoinositol-labeled Lilium longiflorum Pistils 1
Kroh, M., Miki-Hirosige, H., Rosen, W., Loewus, F.
Compatible and incompatible pollen tubes growing on detached Lilium longiflorum pistils which had been prelabeled with myoinositol-U-14C take up a portion of the label and utilize it for biosynthesis...
Labarca, C., Kroh, M., Loewus, F.
Stigmatic exudate, a secretion product recovered from the upper surface of Lilium longiflorum pistils, has been examined. Over 99% of the exudate is accounted for as water, carbohydrate, and protein....
Kroh, M., Miki-Hirosige, H., Rosen, W., Loewus, F.
When detached flowers or isolated pistils of Lilium longiflorum are given myoinositol-U-14C or -2-3H as dilute solution through the severed pedicel, label is quickly distributed by the vascular...
Incorporation of Label into Pollen Tube Walls from Myoinositol-labeled Lilium longiflorum Pistils 1
Kroh, M., Miki-Hirosige, H., Rosen, W., Loewus, F.
Compatible and incompatible pollen tubes growing on detached Lilium longiflorum pistils which had been prelabeled with myoinositol-U-14C take up a portion of the label and utilize it for biosynthesis...
Labarca, C., Kroh, M., Loewus, F.
Stigmatic exudate, a secretion product recovered from the upper surface of Lilium longiflorum pistils, has been examined. Over 99% of the exudate is accounted for as water, carbohydrate, and protein....
25 Wellen Sozio-oekonomisches Panel
S. Anger, D. A. Bowen, M. Engelmann, J. R. Frick, J. Goebel, M. M. Grabka, ...
Im Januar des Jahres 2008 begann die Feldarbeit der 25. Welle des SOEP. Im Jahr 2009 werden damit etwa 2 500 anonymisierte Datensätze von Personen zur Auswertung zur Verfügung stehen, die seit 1984...
Zur Weiterentwicklung von SOEPsurvey und SOEPservice
S. Anger, J.R. Frick, J. Goebel, M.M. Grabka, O. Groh-Samberg, H. Haas, ...
Dieser Aufsatz ist der Frage der Weiterentwicklung des SOEP insgesamt gewidmet. Daher nehmen wir in einem ersten Teil eine Bestandsaufnahme der Entscheidungsstrukturen zum Erhebungsprogramm...
25 Wellen Sozio-oekonomisches Panel
S. Anger, D. A. Bowen, M. Engelmann, J. R. Frick, J. Goebel, M. M. Grabka, ...
Im Januar des Jahres 2008 begann die Feldarbeit der 25. Welle des SOEP. Im Jahr 2009 werden damit etwa 2 500 anonymisierte Datensätze von Personen zur Auswertung zur Verfügung stehen, die seit 1984...
Zur Weiterentwicklung von SOEPsurvey und SOEPservice
S. Anger, J. R. Frick, J. Goebel, M. M. Grabka, O. Groh-Samberg, H. Haas, ...
Dieser Aufsatz ist der Frage der Weiterentwicklung des SOEP insgesamt gewidmet. Daher nehmen wir in einem ersten Teil eine Bestandsaufnahme der Entscheidungsstrukturen zum Erhebungsprogramm...