Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.
2019Energy efficient 850-nm VCSEL based optical transmitter and receiver link capable of 56 Gbit/s NRZ operation
Ledentsov, N.; Agustin, M.; Chorchos, L.; Kropp, J.R.; Shchukin, V.A.; Kalosha, V.P.; Köpp, M.; Caspar, C.; Turkiewicz, J.P.; Ledentsov, N.N.
Conference Paper
2018High-Speed DMT and VCSEL-Based MMF Transmission Using Pre-Distortion
Kottke, C.; Caspar, C.; Jungnickel, V.; Freund, R.; Agustin, M.; Kropp, J.R.; Ledentsov, N.N.
Journal Article
2017High speed 160 Gb/s DMT VCSEL transmission using pre-equalization
Kottke, C.; Caspar, C.; Jungnickel, V.; Freund, R.; Agustin, M.; Ledentsov, N.N.
Conference Paper
2017A SiGe-HBT 2:1 analog multiplexer with more than 67 GHz bandwidth
Tannert, T.; Du, X.-Q.; Widmann, D.; Grözing, M.; Berroth, M.; Schmidt, C.; Caspar, C.; Choi, J.H.; Jungnickel, V.; Freund, R.
Conference Paper
2015High speed transmission over multimode fiber with direct modulated single-mode VCSEL
Caspar, C.; Kropp, J.-R.; Shchukin, V.A.; Ledentsov, N.N.; Jungnickel, V.; Freund, R.
Conference Paper
2015High-speed modulation, wavelength, and mode control in vertical-cavity surface-emitting lasers
Ledentsov, N.N.; Kropp, J.-R.; Shchukin, V.A.; Steinle, G.; Ledentsov, N.L.N.; Turkiewicz, J.P.; Wu, B.; Qiu, S.F.; Ma, Y.N.; Feng, Z.Y.; Burger, S.; Schmidt, F.; Caspar, C.; Freund, R.; Choquette, K.D.
Conference Paper
2012Progress on single mode VCSELs for data- and tele-communications
Ledentsov, N.N.; Lott, J.A.; Kropp, J.-R.; Shchukin, V.A.; Bimberg, D.; Moser, P.; Fiol, G.; Payusov, A.S.; Molin, D.; Kuyt, G.; Amezcua, A.; Karachinsky, L.Ya.; Blokhin, S.A.; Novikov, I.I.; Maleev, N.A.; Caspar, C.; Freund, R.
Conference Paper
2010High-speed transmission in multimode fibers
Freund, R.E.; Bunge, C.-A.; Ledentsov, N.N.; Molin, D.; Caspar, C.
Journal Article
2009Modeling nonlinear phase noise in differentially phase-modulated optical communication systems
Coelho, L.D.; Molle, L.; Gross, D.; Hanik, N.; Freund, R.; Caspar, C.; Schmidt, E.-D.; Spinnler, B.
Journal Article
2009Tests reveal importance of transceiver characteristics on OM-4 link performance
Kuyt, G.; Matthijsse, P.; Molin, D.; Caspar, C.; Freund, R.
Journal Article
200830 Gbit/s RZ-8-PSK transmission over 2800 km standard single-mode fibre without inline dispersion compensation
Freund, R.; Gross, D.-D.; Seimetz, M.; Molle, L.; Caspar, C.
Conference Paper
2008Impact of transceiver characteristics on the performance of 10 GbE links applying OM-4 multimode fibers
Caspar, C.; Freund, R.; Achten, F.; Gholami, A.; Kuyt, G.; Matthijsse, P.; Molin, D.
Conference Paper
2008Long haul transmission of optical minimum shift keying format
Rohde, M.; Freund, R.; Caspar, C.; Hachmeister, A.; Gruner, M.
Conference Paper
2007Higher bitrates and advanced modulation formats facilitate overlay upgrades of installed submarine
Freund, R.; Molle, L.; Caspar, C.; Schwartz, J.; Webb, S.; Barnes, S.
Conference Paper
2007Numerical and experimental investigation of the effect of dispersion regime
Coelho, L.D.; Molle, L.; Gross, D.; Hanik, N.; Freund, R.; Caspar, C.; Schmidt, E.D.
Conference Paper
2007Performance analysis of 20 Gbit/s RZ-DPSK non-slope matched transoceanic submarine links
Slater, B.; Boscolo, S.; Turitsyn, S.K.; Broderick, T.; Freund, R.; Molle, L.; Caspar, C.; Schwartz, J.; Barnes, S.
Conference Paper
2007Performance analysis of 20Gb/s RZ-DPSK non-slope matched transoceanic submarine links
Slater, B.; Boscolo, S.; Broderick, T.; Turitsyn, S.K.; Freund, R.; Molle, L.; Caspar, C.; Schwartz, J.; Barnes, S.
Journal Article
2007Upgrades of non-slope matched submarine transmission systems using differential phase shift keying
Molle, L.; Caspar, C.; Freund, R.; Desbruslais, S.; Oberland, R.; Schwartz, J.
Conference Paper
2006Compact RZ-DPSK transmitter applying a phaseCOMB laser as carved source
Bauer, S.; Ding, H.; Kreissl, J.; Biletzke, M.; Satorius, B.; Molle, L.; Caspar, C.; Freund, R.; Umbach, A.; Steffan, A.
Conference Paper
2006Midxed bitrate and modulation format upgrade of non-slope matched submarine links
Freund, R.; Molle, L.; Caspar, C.; Schwartz, J.; Webb, S.; Barnes, S.
Conference Paper
2006Mixed bitrate and modulation format upgrades of non-slope matched submarine links
Freund, R.; Molle, L.; Caspar, C.; Schwartz, J.; Webb, S.; Barnes, S.
Conference Paper
2006Multimode fiber enabling 40 Gbit/s multi-mode transmission over distances >400 m
Matthijsse, P.; Kuyt, G.; Gooijer, F.; Achten, F.; Freund, R.; Molle, L.; Caspar, C.; Rosin, T.; Schmidt, D.; Beling, A.; Eckhardt, T.
Conference Paper
2006Upgrades of submarine systems using higher bitrates and advanced modulation formats
Schwartz, J.; Freund, R.; Molle, L.; Caspar, C.; Webb, S.; Barnes, S.
Conference Paper
2005Cost optimization study using dispersion-managed fiber in a German backbone network
Nederlof, L.; Mirto, D.; Ten, S.; Gunkel, M.; Breuer, D.; Reiner, H.; Cremer, H.; Freund, R.; Caspar, C.; Raub, F.
Conference Paper
2005Dispersion-managed fiber (DMF): Experimental & economic evaluation
Gunkel, M.; Breuer, D.; Reiner, H.; Cremer, H.; Freund, R.; Caspar, C.; Raub, F.; Mirto, D.; Ten, S.
Conference Paper
2005Triple-(S/C/L)-band WDM transmission using erbium-doped fibre amplifiers
Freund, R.; Molle, L.; Raub, F.; Caspar, C.; Karkri, M.; Weber, C.
Conference Paper
2004Extension of all-optical network-transparent domains based on normalized transmission sections
Hanik, N.; Ehrhardt, A.; Gladisch, A.; Peucheret, C.; Jeppesen, P.; Molle, L.; Freund, R.; Caspar, C.
Journal Article
2004Mixed fiber infrastructures in long haul WDM-transmission
Breuer, D.; Hanik, N.; Caspar, C.; Raub, F.; Bramann, G.; Rohde, M.; Bachus, E.-J.; McLeod, S.; Edwards, M.
Journal Article
2002Control modulation technique for client independent optical performance monitoring and transport of channel overhead
Rohde, M.; Caspar, C.; Raub, F.; Bramann, G.; Louchet, H.; Habel, K.; Bachus, E.-J.
Conference Paper
2002Transparent performance monitoring and channel identification by new client independent control modulation technique
Rohde, M.; Caspar, C.; Raub, F.; Bachus, E.-J.
Journal Article
2001Penalties through XPM crosstalk in a switched long haul standard fiber WDM system based on normalized transmission sections
Caspar, C.; Habel, K.; Heimes, N.; Konitzer, M.; Malach, M.; Ozdem, H.; Rohde, M.; Schmidt, F.; Bachus, E.-J.; Hanik, N.
Conference Paper
2001Simplified design approach of reliable transparent optical networks
Breuer, D.; Ehrhardt, A.; Foisel, H.-M.; Gladisch, A.; Hanik, N.; Jäger, M.; Neumann, W.; Rocks, M.; Staudemeyer, B.; Bachus, E.-J.; Caspar, C.; Rohde, M.; Schmidt, F.; Schulze, E.; Walf, G.
Journal Article
2001Using normalised sections for the design of all optical networks
Caspar, C.; Freund, R.; Hanik, N.; Molle, L.; Peucheret, C.
Conference Paper
2000Histogram method for identification and evaluation of crosstalk
Weinert, C.M.; Caspar, C.; Konitzer, M.; Rohde, M.
Journal Article
2000Histogram method for identification and evaluation of crosstalk
Weinert, C.M.; Caspar, C.; Konitzer, M.; Rohde, M.
Conference Paper
2000Influence of cascaded crosstalk sources on transparency length
Caspar, C.; Konitzer, M.; Schmidt, E.; Schulze, E.; Strebel, B.; Weinert, C.M.
Journal Article
2000Robustness of DPSK direct detection transmission format in standard fibre WDM systems
Rohde, M.; Caspar, C.; Heimes, N.; Konitzer, M.; Bachus, E.-J.; Hanik, N.
Journal Article
19994*2.5 Gbit/s, NRZ transmission experiments over crossconnects with opto-electronic frequency converters and dispersion compensated standard single-mode fibre links
Strebel, B.; Caspar, C.; Foisel, H.-M.; Weinert, C.; Molle, L.
Journal Article
1999Measurement and modeling of timing jitter in optoelectronic repeaters and frequency converters
Weinert, C.M.; Molle, L.; Caspar, C.; Strebel, B.
Journal Article
1999RZ versus NRZ modulation format for dispersion compensated SMF-based 10-Gb/s transmission with more than 100-km amplifier spacing
Caspar, C.; Foisel, H.-M.; Gladisch, A.; Hanik, N.; Kuppers, F.; Ludwig, R.; Mattheus, A.; Pieper, W.; Strebel, B.; Weber, H.G.
Journal Article
1998Four-channel 10-Gb/s transmission over 15-wavelength selective crossconnect paths and 1175-km dispersion compensated standard single-mode-fiber links
Caspar, C.; Foisel, H.-M.; Freund, R.; Strebel, B.
Journal Article
1998Four-channel 10-Gbit/s transmission over 15-wavelength-selective cross-connect paths and 1175-km dispersion-compensated standard single-mode fiber links
Caspar, C.; Foisel, H.-M.; Freund, R.; Strebel, B.
Conference Paper
1998Loop experiments and simulations for the wavelength division multiplex network signal path
Strebel, B.; Caspar, C.; Freund, R.
Conference Paper
1998Numerical analysis of transparency limitations in optical core networks and verification by experiment
Freund, R.; Caspar, C.; Foisel, H.-M.; Hanik, N.; Reimer, W.; Strebel, B.; Weinert, C.M.
Conference Paper
1997Cascadability of arrayed-waveguide grating (de)multiplexers in transparent optical networks
Caspar, C.; Foisel, H.-M.; Freund, R.; Kruger, U.; Strebel, B.
Conference Paper
1997Comparison of cascadability performance of different types of commercially available wavelength (de)multiplexers
Caspar, C.; Foisel, H.-M.; Helmolt, C.; Strebel, B.; Sugaya, Y.
Journal Article
1997Comparison of the cascadability performance of different types of commercially available wavelength (de)multiplexers
Caspar, C.; Foisel, H.-M.; Helmolt, C. von; Strebel, B.; Sugaya, Y.
Conference Paper
1997Crosstalk evaluations of optical add/drop multiplexer in WDM-ring networks
Caspar, C.; Gladisch, A.; Foisel, H.-M.; Strebel, B.
Conference Paper
1997Gb/s NRZ/RZ transmission over 2000 km standard fibre with more than 100 km amplifier spacing
Caspar, C.; Foisel, H.-M.; Gladisch, A.; Hanik, N.; Kuppers, F.; Ludwig, R.; Mattheus, A.; Pieper, W.; Strebel, B.; Weber, H.G.
Conference Paper
1996Improvement of crosstalk tolerance in optical cross connects by regenerative frequency converters
Caspar, C.; Foisel, H.-M.; Patzak, E.; Strebel, B.; Weich, K.
Conference Paper
1996Improvement of crosstalk tolerance in optical cross-connects by regenerative frequency converters
Caspar, C.; Foisel, H.-M.; Patzak, E.; Strebel, B.; Weich, K.
Journal Article
1996Transparency limitations in optical core networks
Strebel, B.; Caspar, C.; Foisel, H.-M.
Conference Paper
1995Cascadability measurements of optical cross connects in OFDM systems
Strebel, B.; Caspar, C.; Foisel, H.-M.; Teich, G.
Conference Paper
1995Crossconnects in optically transparent networks
Strebel, B.; Caspar, C.; Foisel, H.-M.
Journal Article
1994Signalling experiment for optical frequency division multiplexed switching systems
Braun, R.-P.; Caspar, C.; Foisel, H.-M.; Heimes, K.; Strebel, B.
Journal Article
1994Switching of TV channels in a transparent OFDM cross connect
Strebel, B.; Braun, R.-P.; Caspar, C.; Foisel, H.-M.
Conference Paper
1993Signalling experiment for transparent OFDM switching nodes
Bruan, R.-P.; Caspar, C.; Foisel, H.-M.; Heimes, K.; Strebel, B.
Conference Paper
1993Transparent switching node for optical frequency division multiplexed signals
Braun, R.-P.; Caspar, C.; Foisel, H.-M.; Heimes, K.; Strebel, B.; Keil, N.; Yao, H.H.
Journal Article
1991Broadband transmission in coherent frequency multiplex optical fibre networks
Bachus, E.-J.; Strebel, B.; Foisel, H.-M.; Braun, R.-P.; Caspar, C.
Journal Article
1991Transparent all-optical coherent-multi-carrier 4*2 switching node
Braun, R.-P.; Bachus, E.-J.; Caspar, C.; Foisel, H.-M.; Strebel, B.
Conference Paper
1990Coherent OFDM switching systems
Foisel, H.-M.; Bachus, E.-J.; Braun, R.P.; Caspar, C.; Strebel, B.
Conference Paper
1989Broadband exchange by coherent multi-carrier switching
Bachus, E.-J.; Braun, R.-P.; Caspar, C.; Foisel, H.M.; Keil, N.; Yao, H.H.; Strebel, B.
Conference Paper
1989Coherent optical multicarrier systems
Bachus, E.J.; Braun, R.P.; Caspar, C.; Foisel, H.M.; Grossmann, E.; Strebel, B.; Westphal, F.J.
Journal Article
1989Fibre-optic micro-ring-resonator with 2 mm diameter
Caspar, C.; Bachus, E.-J.
Journal Article
1988Components of a ten-channel coherent HDTV/TV distribution system
Bachus, E.-J.; Braun, R.-P.; Caspar, C.; Foisel, H.-M.; Goralczyk, H.; Grossmann, E.; Heimes, K.; Keil, N.; Menow, D.; Strebel, B.; Weickhmann, M.; Westphal, J.
Conference Paper
1987Automatic switching system in optical heterodyne techniques
Caspar, C.; Grossmann, E.; Strebel, B.
Conference Paper
1986Ten-channel coherent optical fibre transmission
Bachus, E.J.; Braun, R.P.; Caspar, C.; Grossmann, E.; Foisel, H.; Heimes, K.; Lamping, H.; Strebel, B.; Westphal, F.J.
Journal Article