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| 2020 | 100 Gb/s Real-Time Transmission over a THz Wireless Fiber Extender using a Digital-Coherent Optical Modem
Castro, Carlos; Elschner, Robert; Merkle, Thomas; Schubert, Colja; Freund, Ronald | Konferenzbeitrag |
| 2020 | Demonstration of optical wireless communications using the pulsed modulation PHY in IEEE 802.15.13
Hinrichs, M.; Schmidt, C.; Poddig, B.; Hilt, J.; Hellwig, P.; Schulz, D.; Bober, K.L.; Schostak, J.; Freund, R.; Jungnickel, V. | Konferenzbeitrag |
| 2020 | Experimental Comparison of Fiber Nonlinearity Mitigation: Intra-Modal FWM versus Inter-Modal FWM
Sackey, I.; Schmidt-Langhorst, C.; Schubert, C.; Fischer, J.K.; Freund, R. | Konferenzbeitrag |
| 2020 | Experimental demonstrations of high-capacity THz-wireless transmission systems for beyond 5G
Castro, Carlos; Elschner, Robert; Merkle, Thomas; Schubert, Colja; Freund, Ronald | Zeitschriftenaufsatz |
| 2020 | Laser-based LiFi for 6G: Potential and applications
Jungnickel, V.; Hohmann, J.; Schulz, D.; Hellwig, P.; Hilt, J.; Kottke, C.; Freund, R. | Abstract |
| 2020 | Long-range high-speed THz-wireless transmission in the 300 GHz Band
Castro, Carlos; Elschner, Robert; Merkle, Thomas; Schubert, Colja; Freund, Ronald | Konferenzbeitrag |
| 2020 | Performance evaluation of InP-Based DP-IQ modulators for multiband transmission systems
Sena, M.; Cui, Y.; Fiol, G.; Shariati, B.; Napoli, A.; Fischer, J.K.; Schell, M.; Freund, R. | Konferenzbeitrag |
| 2020 | PON transceiver technologies for ≥50 Gbits/s per λ: Alamouti coding and heterodyne detection [Invited]
Erkilinc, M.S.; Emmerich, R.; Habel, K.; Jungnickel, V.; Schmidt-Langhorst, C.; Schubert, C.; Freund, R. | Zeitschriftenaufsatz |
| 2019 | Ethernet transmission over a 100 Gb/s real-time terahertz wireless link
Castro, Carlos; Elschner, Robert; Machado, José; Merkle, Thomas; Schubert, Colja; Freund, Ronald | Konferenzbeitrag |
| 2019 | Outdoor Measurements Using an Optical Wireless Link for Fixed-Access Applications
Schulz, D.; Hohmann, J.; Hellwig, P.; Hilt, J.; Schmidt, C.; Freund, R.; Jungnickel, V. | Zeitschriftenaufsatz |
| 2019 | Performance of Bandwidth Extension Techniques for High-Speed Short-Range IM/DD Links
Kottke, C.; Schmidt, C.; Jungnickel, V.; Freund, R. | Zeitschriftenaufsatz |
| 2019 | Tracking challenges of QKD over relay satellite
Sharma, S.; Perlot, N.; Rödiger, J.; Freund, R. | Konferenzbeitrag |
| 2018 | Bandwidth enhancement for an optical access link by using a frequency interleaved DAC
Schmidt, C.; Kottke, C.; Freund, R.; Jungnickel, V. | Konferenzbeitrag |
| 2018 | Bandwidth extension techniques for high-speed access networks
Kottke, C.; Schmidt, C.; Freund, R.; Jungnickel, V. | Konferenzbeitrag |
| 2018 | Digital-to-analog converters for high-speed optical communications using frequency interleaving
Schmidt, C.; Kottke, C.; Freund, R.; Gerfers, F.; Jungnickel, V. | Zeitschriftenaufsatz |
| 2018 | Digital-to-Analog Converters Using Frequency Interleaving: Mathematical Framework and Experimental Verification
Schmidt, C.; Kottke, C.; Tanzil, V.H.; Freund, R.; Jungnickel, V.; Gerfers, F. | Zeitschriftenaufsatz |
| 2018 | High-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. | Zeitschriftenaufsatz |
| 2018 | Measurement based correlation analysis of a hybrid optical wireless/60 GHz link
Schulz, D.; Hohmann, J.; Hilt, J.; Hellwig, P.; Freund, R.; Jungnickel, V. | Konferenzbeitrag |
| 2018 | Quantum key distribution over free space
Beutel, F.; Rödiger, J.; Perlot, N.; Freund, R.; Benson, O. | Konferenzbeitrag |
| 2018 | Use cases for optical wireless communication
Schulz, D.; Berenguer, P.W.; Hilt, J.; Hellwig, P.; Paraskevopoulos, A.; Freund, R.; Jungnickel, V. | Konferenzbeitrag |
| 2017 | Benefits of time-frequency coding for quantum key distribution
Rödiger, J.; Perlot, N.; Benson, O.; Freund, R. | Konferenzbeitrag |
| 2017 | Demonstration of adaptive SDN orchestration: A real-time congestion-aware services provisioning over OFDM-Based 400G OPS and flexi-WDM OCS
Fabrega, J.M.; Moreolo, M.S.; Mayoral, A.; Vilalta, R.; Casellas, R.; Martinez, R.; Munoz, R.; Yoshida, Y.; Kitayama, K.; Kai, Y.; Nishihara, M.; Okabe, R.; Tanaka, T.; Takahara, T.; Rasmussen, J.C.; Yoshikane, N.; Cao, X.; Tsuritani, T.; Morita, I.; Habel, K.; Freund, R.; Lopez, V.; Aguado, A.; Yan, S.; Simeonidou, D.; Szyrkowiec, T.; Autenrieth, A.; Shiraiwa, M.; Awaji, Y.; Wada, N. | Zeitschriftenaufsatz, Konferenzbeitrag |
| 2017 | High speed 160 Gb/s DMT VCSEL transmission using pre-equalization
Kottke, C.; Caspar, C.; Jungnickel, V.; Freund, R.; Agustin, M.; Ledentsov, N.N. | Konferenzbeitrag |
| 2017 | High-speed digital-to-analog converter concepts
Schmidt, C.; Kottke, C.; Jungnickel, V.; Freund, R. | Konferenzbeitrag |
| 2017 | Long-term outdoor measurements using a rate-adaptive hybrid optical wireless/60 GHz link over 100 m
Schulz, D.; Jungnickel, V.; Das, S.; Hohmann, J.; Hilt, J.; Hellwig, P.; Paraskevopoulos, A.; Freund, R. | Konferenzbeitrag |
| 2017 | Numerical assessment and optimization of discrete-variable time-frequency quantum key distribution
Rödiger, J.; Perlot, N.; Mottola, R.; Elschner, R.; Weinert, C.-M.; Benson, O.; Freund, R. | Zeitschriftenaufsatz |
| 2017 | Optical network demands for 5G mobile access
Freund, R. | Konferenzbeitrag |
| 2017 | A 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. | Konferenzbeitrag |
| 2016 | Coexistence of WiFi and LiFi toward 5G: Concepts, opportunities, and challenges
Ayyash, M.; Elgala, H.; Khreishah, A.; Jungnickel, V.; Little, T.; Shao, S.H.; Rahaim, M.; Schulz, D.; Hilt, J.; Freund, R. | Zeitschriftenaufsatz |
| 2016 | Digital signal splitting among multiple DACs for analog bandwidth interleaving (ABI)
Schmidt, C.; Tanzil, V.H.; Kottke, C.; Freund, R.; Jungnickel, V. | Konferenzbeitrag |
| 2016 | First demonstration of cognitive SDN orchestration: A real-time congestion-aware services provisioning over OFDM-based 400G OPS and Flexi-WDM OCS networks
Yoshida, Y.; Kitayama, K.; Kai, Y.; Nishihara, M.; Okabe, R.; Tanaka, T.; Takahara, T.; Rasmussen, J.C.; Yoshikane, N.; Cao, X.; Tsuritani, T.; Morita, I.; Mayoral, A.; Fabrega, J.M.; Vilalta, R.; Casellas, R.; Martinez, R.; Moreolo, M.S.; Munoz, R.; Habel, K.; Freund, R.; Lopez, V.; Aguado, A.; Yan, S.; Simeonidou, D.; Szyrkowiec, T.; Autenrieth, A.; Shiraiwa, M.; Awaji, Y.; Wada, N. | Konferenzbeitrag |
| 2016 | Robust optical wireless link for the backhaul and fronthaul of small radio cells
Schulz, D.; Jungnickel, V.; Alexakis, C.; Schlosser, M.; Hilt, J.; Paraskevopoulos, A.; Grobe, L.; Farkas, P.; Freund, R. | Zeitschriftenaufsatz |
| 2016 | SDN-enabled sliceable BVT based on multicarrier technology for multiflow rate/distance and grid adaptation
Svaluto Moreolo, M.; Fabrega, J.M.; Nadal, L.; Vilchez, F.J.; Mayoral, A.; Vilalta, R.; Munoz, R.; Casellas, R.; Martinez, R.; Nishihara, M.; Tanaka, T.; Takahara, T.; Rasmussen, J.C.; Kottke, C.; Schlosser, M.; Freund, R.; Meng, F.; Yan, S.; Zervas, G.; Simeonidou, D.; Yoshida, Y.; Kitayama, K.-I. | Zeitschriftenaufsatz |
| 2016 | Software-defined Open Access for flexible and service-oriented 5G deployment
Jungnickel, V.; Parker, M.C.; Riera, J.F.; Bock, C.; Marques, V.; Levi, D.; Schulz, D.; Hilt, J.; Habel, K.; Del Rosal, L.F.; Freund, R.; Walker, S.D. | Konferenzbeitrag |
| 2015 | 5 Gbit/s real-time processing using π/4-shift DQPSK for bidirectional radio-over-fibre system
Habel, K.; Fernandez del Rosal, L.; Weide, S.; Hilt, J.; Jungnickel, V.; Elschner, R.; Schubert, C.; Frey, F.; Fischer, J.K.; Freund, R. | Konferenzbeitrag |
| 2015 | Design and analysis of a visible-light-communication enhanced WiFi system
Shao, S.H.; Khreishah, A.; Ayyash, M.; Rahaim, M.B.; Elgala, H.; Jungnickel, V.; Schulz, D.; Little, T.D.C.; Hilt, J.; Freund, R. | Zeitschriftenaufsatz |
| 2015 | High 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. | Konferenzbeitrag |
| 2015 | High-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. | Konferenzbeitrag |
| 2015 | Initial outdoor trials with optical wireless links for small-cell backhauling
Schulz, D.; Alexakis, C.; Schlosser, M.; Hilt, J.; Freund, R.; Jungnickel, V. | Konferenzbeitrag |
| 2015 | Low latency mobile backhauling using optical wireless links
Schulz, D.; Alexakis, C.; Hilt, J.; Schlosser, M.; Habel, K.; Jungnickel, V.; Freund, R. | Konferenzbeitrag |
| 2015 | Optical wireless communication for backhaul and access
Jungnickel, V.; Schulz, D.; Hilt, J.; Alexakis, C.; Schlosser, M.; Grobe, L.; Paraskevopoulos, A.; Freund, R.; Siessegger, B.; Kleinpeter, G. | Konferenzbeitrag |
| 2015 | Optical wireless LED link for the backhaul of small cells
Schulz, D.; Schlosser, M.; Alexakis, C.; Habel, K.; Hilt, J.; Freund, R.; Jungnickel, V. | Konferenzbeitrag |
| 2015 | Preliminary results of terabit-per-second long-range free-space optical transmission experiment THRUST
Giggenbach, D.; Poliak, J.; Mata-Calvo, R.; Fuchs, C.; Perlot, N.; Freund, R.; Richter, T. | Konferenzbeitrag |
| 2015 | Quantum cryptography over the FSO channel with PPM and FSK modulations
Roediger, J.; Perlot, N.; Freund, R. | Konferenzbeitrag |
| 2015 | Requirements and design concepts of a software tool for a multidimensional analysis of process chains
Landgrebe, Dirk; Rautenstrauch, Anja; Freund, Ronny; Grzelak, Dominik; Symmank, Christina; Götze, Uwe; Boll, Jeanette; Wiemer, Hajo; Awiszus, Birgit | Konferenzbeitrag |
| 2015 | SDN-enabled sliceable BVT based on multicarrier technology for multi-flow rate/distance and grid adaptation
Moreolo, M.S.; Fabrega, J.M.; Nadal, L.; Vilchez, F.J.; Mayoral, A.; Vilalta, R.; Munoz, R.; Casellas, R.; Martinez, R.; Nishihara, M.; Tanaka, T.; Takahara, T.; Rasmussen, J.C.; Kottke, C.; Schlosser, M.; Freund, R.; Meng, F.; Yan, S.; Zervas, G.; Simeonidou, D.; Yoshida, Y.; Kitayama, K. | Konferenzbeitrag |
| 2013 | Techniques to realize flexible optical terabit-per-second transmission systems
Nölle, M.; Schubert, C.; Freund, R. | Konferenzbeitrag |
| 2012 | Performance comparison of MSK and QPSK optical long haul DWDM transmission with coherent detection
Hachmeister, A.; Nölle, M.; Molle, L.; Freund, R.; Rohde, M. | Zeitschriftenaufsatz |
| 2012 | Progress 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. | Konferenzbeitrag |
| 2011 | Higher-order modulation formats for spectral-efficient high-speed metro systems
Freund, R.; Nölle, M.; Seimetz, M.; Hilt, J.; Fischer, J.; Ludwig, R.; Schubert, C.; Bach, H.-G.; Velthaus, K.-O.; Schell, M. | Konferenzbeitrag |
| 2011 | Übertragungs- und Komponententechnik für 100Gbit/s Systeme
Freund, R.; Velthaus, K.-O.; Kunkel, R.; Schubert, C.; Schell, M.; Nölle, M. | Bericht |
| 2010 | 32 Gbaud real-time FPGA-based multi-format transmitter for generation of higher-order modulation formats
Hilt, J.; Nölle, M.; Molle, L.; Seimetz, M.; Freund, R. | Konferenzbeitrag |
| 2010 | 8x224 Gbit/s PDM 16QAM WDM transmission with real-time signal processing at the transmitter
Nölle, M.; Hilt, J.; Molle, L.; Seimetz, M.; Freund, R. | Konferenzbeitrag |
| 2010 | High capacity and reach in multimode fibers
Freund, R. | Konferenzbeitrag |
| 2010 | High spectral efficient phase and quadrature amplitude modulation for optical fibre transmission
Freund, R.; Hilt, J.; Nölle, M.; Molle, L.; Seimetz, M.; Fischer, J.K.; Ludwig, R.; Schmidt-Langhorst, C.; Schubert, C. | Konferenzbeitrag |
| 2010 | High-speed transmission in multimode fibers
Freund, R.E.; Bunge, C.-A.; Ledentsov, N.N.; Molin, D.; Caspar, C. | Zeitschriftenaufsatz |
| 2010 | NRZ-PM-QPSK 16 x 100 Gb/s transmission over installed fiber with different dispersion maps
Gavioli, G.; Torrengo, E.; Bosco, G.; Carena, A.; Curri, V.; Miot, V.; Poggiolini, P.; Forghieri, F.; Savory, S.J.; Molle, L.; Freund, R. | Zeitschriftenaufsatz |
| 2010 | Single- and multi-carrier techniques to build up Tb/s per channel transmission systems
Freund, R.; Nölle, M.; Schmidt-Langhorst, C.; Ludwig, R.; Schubert, C.; Bosco, G.; Carena, A.; Poggiolini, P.; Oxenlowe, L.K.; Galili, M.; Mulvad, H.C.H.; Winter, M.; Hillerkuss, D.; Schmogrow, R.; Freude, W.; Leuthold, J.; Ellis, A.D.; Gunning, F.C.G; Zhao, J.; Frascella, P. | Konferenzbeitrag |
| 2010 | Terabit/s single-carrier transmission based on coherent time-division demultiplexing
Schmidt-Langhorst, C.; Ludwig, R.; Molle, L.; Gross, D.D.; Freund, R.; Schubert, C. | Konferenzbeitrag |
| 2010 | Terabit/s single-carrier transmission systems based on coherent time-division demultiplexing
Schmidt-Langhorst, C.; Ludwig, R.; Molle, L.; Groß, D.-D.; Freund, R.; Schubert, C. | Konferenzbeitrag |
| 2010 | Transmission of 5×62 Gbit/s DWDM coherent OFDM with a spectral efficiency of 7.2 Bit/s/Hz using joint 64-QAM and 16-QAM modulation
Nölle, M.; Molle, L.; Gross, D.-D.; Freund, R. | Konferenzbeitrag |
| 2009 | 1.28 Tb/s single wavelength star-16-QAM transmission over up to 800 m of graded-index multimode fibre
Freund, R.-E.; Gross, D.-D.; Ludwig, R.; Schmidt-Langhorst, C. | Konferenzbeitrag |
| 2009 | 100Gb/s WDM NRZ-PM-QPSK long-haul transmission experiment over installed fiber probing non-linear reach with and without DCUs
Gavioli, G.; Torrengo, E.; Bosco, G.; Carena, A.; Curri, V.; Miot, V.; Poggiolini, P.; Belmonte, M.; Guglierame, A.; Brinciotti, A.; La Porta, A.; Forghieri, F.; Muzio, C.; Osnago, G.; Piciaccia, S.; Lezzi, C.; Molle, L.; Freund, R. | Konferenzbeitrag |
| 2009 | 80 Gbit/s/lambda polarization multiplexed star-16QAM WDM transmission over 720 km SSMF with electronic distortion equalization
Freund, R.; Louchet, H.; Gruner, M.; Molle, L.; Seimetz, M.; Richter, A. | Konferenzbeitrag |
| 2009 | Architekturen, Systeme, Komponenten für effiziente integrierte Backbone-Netze, HHI-EIBONE
Schubert, C.; Freund, R.; Kreissl, J.; Bach, H.-G.; Walf, G. | Bericht |
| 2009 | Comparison of 30 Gbit/s coherent 8PSK single carrier and OFDM multi carrier systems with respect to transmission reach
Nölle, M.; Freund, R. | Konferenzbeitrag |
| 2009 | Design of a wavelength control for coherent detection of high order modulation formats
Fabrega, J.M.; Prat, J.; Molle, L.; Freund, R. | Konferenzbeitrag |
| 2009 | Electronic distortion compensation in the mitigation of optical transmission impairments
Papagiannakis, I.; Klonidis, D.; Curri, V.; Poggiolini, P.; Bosco, G.; Killey, R.I.; Omella, M.; Prat, J.; Fonseca, D.; Teixeira, A.; Cartaxo, A.; Freund, R.; Grivas, E.; Bogris, A.; Birbas, A.N.; Tomkos, I. | Zeitschriftenaufsatz |
| 2009 | Generation and coherent time-division demultiplexing of up to 5.1 Tb/s single-channel 8-PSK and 16-QAM signals
Schmidt-Langhorst, C.; Ludwig, R.; Gross, D.-D.; Molle, L.; Seimetz, M.; Freund, R.; Schubert, C. | Konferenzbeitrag |
| 2009 | High-speed transmission in multimode fibers
Freund, R. | Konferenzbeitrag |
| 2009 | Hochbitratige optische Übertragung für die Satellitenkommunikation
Weinert, C.M.; Giggenbach, D.; Freund, R.; Perlot, N. | Konferenzbeitrag |
| 2009 | Influence of neighbor channel modulation formats on 112 Gbit/s and 42.8 Gbit/s WDM coherent polmux-QPSK transmission systems
Seimetz, M.; Nölle, M.; Weinert, C.M.; Freund, R.; Spinnler, B.; Spälter, S.; Fludger, C.R.S. | Konferenzbeitrag |
| 2009 | Long Haul WDM transmission of optical minimum shift keying format with narrow channel spacing
Hachmeister, A.; Rohde, M.; Freund, R. | Konferenzbeitrag |
| 2009 | Modeling 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. | Zeitschriftenaufsatz |
| 2009 | Next generation optical networks based on higher-order modulation formats, coherent receivers and electronic distortion equalization
Freund, R.; Seimetz, M.; Molle, L.; Baghdasaryan, T.; Forzati, M.; Martensson, J. | Konferenzbeitrag |
| 2009 | Polarization multiplexed 20 Gbaud square 16QAM long-haul transmission over 1120 km using EDFA amplification
Molle, L.; Seimetz, M.; Gross, D.D.; Freund, R.; Rohde, M. | Konferenzbeitrag |
| 2009 | Tests reveal importance of transceiver characteristics on OM-4 link performance
Kuyt, G.; Matthijsse, P.; Molin, D.; Caspar, C.; Freund, R. | Zeitschriftenaufsatz |
| 2009 | Transmission reach attainable for single-polarization and PolMux coherent star 16 QAM systems in comparison to 8 PSK and QPSK at 10 Gbaud
Seimetz, M.; Molle, L.; Gruner, M.; Gross, D.-D.; Freund, R. | Konferenzbeitrag |
| 2008 | 30 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. | Konferenzbeitrag |
| 2008 | Higher order modulation formats using coherent detection and electronic distortion equalisation for application in future backbone networks
Freund, R.; Seimetz, M. | Konferenzbeitrag |
| 2008 | Impact 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. | Konferenzbeitrag |
| 2008 | Long haul transmission of optical minimum shift keying format
Rohde, M.; Freund, R.; Caspar, C.; Hachmeister, A.; Gruner, M. | Konferenzbeitrag |
| 2008 | Next generation optical networks based on higher-order modulation formats, coherent receivers and electronic distortion equalization
Seimetz, M.; Freund, R. | Zeitschriftenaufsatz |
| 2008 | Wavelength dependent performance of 20 Gbit/s RZ-DPSK for upgrades of non-slope-matched submarine transmission systems
Molle, L.; Freund, R.; Wong, W.; Schwartz, J. | Konferenzbeitrag |
| 2007 | Coherent optical RZ-8PSK transmission over 1200 km is experimentally demonstrated for the first time employing homodyne detection with 8-th power digital phase estimation
Seimetz, M.; Molle, L.; Gross, D.-D.; Auth, B.; Freund, R. | Konferenzbeitrag |
| 2007 | Higher bitrates and advanced modulation formats facilitate overlay upgrades of installed submarine
Freund, R.; Molle, L.; Caspar, C.; Schwartz, J.; Webb, S.; Barnes, S. | Konferenzbeitrag |
| 2007 | Numerical 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. | Konferenzbeitrag |
| 2007 | Performance 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. | Konferenzbeitrag |
| 2007 | Performance 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. | Zeitschriftenaufsatz |
| 2007 | Upgrades of non-slope matched submarine transmission systems using differential phase shift keying
Molle, L.; Caspar, C.; Freund, R.; Desbruslais, S.; Oberland, R.; Schwartz, J. | Konferenzbeitrag |
| 2007 | Versuchsnetz und Technologien für den optischen Teilnehmer- Breitbandanschluss
Schlaak, W.; Freund, R.; Weinert, C.; Keil, N.; Möhrle, M. | Konferenzbeitrag |
| 2006 | Compact 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. | Konferenzbeitrag |
| 2006 | Midxed bitrate and modulation format upgrade of non-slope matched submarine links
Freund, R.; Molle, L.; Caspar, C.; Schwartz, J.; Webb, S.; Barnes, S. | Konferenzbeitrag |
| 2006 | Mixed bitrate and modulation format upgrades of non-slope matched submarine links
Freund, R.; Molle, L.; Caspar, C.; Schwartz, J.; Webb, S.; Barnes, S. | Konferenzbeitrag |
| 2006 | Multimode 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. | Konferenzbeitrag |
| 2006 | Upgrades of submarine systems using higher bitrates and advanced modulation formats
Schwartz, J.; Freund, R.; Molle, L.; Caspar, C.; Webb, S.; Barnes, S. | Konferenzbeitrag |
| 2005 | 40-Gb/s S-band WDM transmission over installed fiber links using erbium-based fiber amplifiers
Thiele, H.J.; Molle, L.; Freund, R.; Tessmann, H.-J.; Breuer, D.; Jacobi, W.; Arbore, M.A. | Konferenzbeitrag |
| 2005 | Cost 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. | Konferenzbeitrag |
| 2005 | Cross-phase modulation suppression method in multispan dispersion-managed WDM transmission systems
Malach, M.; Bunge, C.-A.; Petermann, K.; Molle, L.; Freund, R.; Thiele, H.J. | Konferenzbeitrag |
| 2005 | Design analysis of upgrade strategies from single- to double- and triple-wavelength-band WDM transmission
Breuer, D.; Schneiders, M.; Vorbeck, S.; Freund, R.; Richter, A. | Konferenzbeitrag |
| 2005 | Design issues of 40-Gbit/s WDM systems for metro and core network application
Freund, R.; Molle, L.; Hanik, N.; Richter, A. | Konferenzbeitrag |
| 2005 | Dispersion-managed fiber (DMF): Experimental & economic evaluation
Gunkel, M.; Breuer, D.; Reiner, H.; Cremer, H.; Freund, R.; Caspar, C.; Raub, F.; Mirto, D.; Ten, S. | Konferenzbeitrag |
| 2005 | Triple-(S/C/L)-band WDM transmission using erbium-doped fibre amplifiers
Freund, R.; Molle, L.; Raub, F.; Caspar, C.; Karkri, M.; Weber, C. | Konferenzbeitrag |
| 2004 | Extension 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. | Zeitschriftenaufsatz |
| 2001 | 10 Gb/s NRZ transmission over 1800 km multiple pumped distributed Raman amplified transmission link without lumped amplifiers
Schulze, E.; Freund, R.; Malach, M.; Raub, F. | Konferenzbeitrag |
| 2001 | Using normalised sections for the design of all optical networks
Caspar, C.; Freund, R.; Hanik, N.; Molle, L.; Peucheret, C. | Konferenzbeitrag |
| 1998 | Four-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. | Zeitschriftenaufsatz |
| 1998 | Four-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. | Konferenzbeitrag |
| 1998 | Loop experiments and simulations for the wavelength division multiplex network signal path
Strebel, B.; Caspar, C.; Freund, R. | Konferenzbeitrag |
| 1998 | Numerical 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. | Konferenzbeitrag |
| 1997 | Cascadability of arrayed-waveguide grating (de)multiplexers in transparent optical networks
Caspar, C.; Foisel, H.-M.; Freund, R.; Kruger, U.; Strebel, B. | Konferenzbeitrag |
| 1997 | Numerical analysis of transparency limitations in optical core networks
Freund, R.; Strebel, B. | Konferenzbeitrag |