Prof. Dr.-Ing. Peter Krummrich

Mr. Peter Krummrich was born in Braunschweig in 1966. He studied electrical engineering at the Technical University of Braunschweig and the New Jersey Institute of Technology, specializing in high-frequency technology. The diploma thesis, completed in 1992, dealt with the construction of a high-resolution tunable laser source for generating short optical pulses. The topic of the doctorate, which was completed in 1995, was praseodymium-doped fiber amplifiers for the wavelength range around 1.3 µm. Also in 1995, Mr. Krummrich took up a position at Siemens AG in Munich. He worked there as a technical expert, later also as a project manager and as a department head, on tasks in pre-development, technical marketing, component development and system development. The technical topics initially included the investigation of distributed erbium-doped amplifiers in cooperation with an external partner. The subject area was later expanded to include technologies for robust optical networks, such as Raman amplification, efficient modulation methods, optical and electrical equalizers and polarization mode dispersion compensators. The investigation of the influence of interference effects on the transmission, such as noise caused by quantum effects or multipath interference, as well as linear and non-linear signal distortions, also played a major role. In 2007, Mr. Krummrich moved to the University of Dortmund, where he took over the management of the chair for high-frequency technology. Technically, he continues to deal with technologies for optical transmission systems. Topics of classic high-frequency technology have also been added, such as research into new concepts for chambers for measuring the electromagnetic compatibility of devices. In 1993, Mr. Krummrich received an award from the SEW Eurodrive Foundation for his diploma thesis. Because of his inventive work at Siemens, he was named ÖN inventor of the year in 1998. He received the ITG prize in 2004 for publications on Raman amplification.

2021:

• P. M. Krummrich, M. Brehler, G. Rademacher, K. Petermann: „Nonlinear Impairment Scaling in Multi-Mode Fibers for Mode-Division Multiplexing“, IEEE J. Ligthwave Technology (2021), Vol. 39, No. 4, Feb. 15, pp. 927 – 932
• P. M. Krummrich, A. Geisler, S. Jeurink, C. G. Schaeffer: „On the Evo­lu­ti­on of Noise in Multiple-Span Transmission with Forward Pumped Raman Amplifiers“, IEEE J. Ligthwave Technology (2021)

2020:

• P. M. Krummrich, M. Brehler, G. Rademacher, K. Petermann, „Nonlinear Impairment Scaling in Multi Mode Fibers for Mode Division Multiplexing“, Conference on Optical Fiber Com­mu­ni­ca­tion (OFC 2020), San Diego, CA, USA, March 8 – 12, paper M3B.1
   
• C. Spenner, P. M. Krummrich, “Mode Group Resolved Analysis of Effects Induced by Macro Bending in a 50 µm Graded Index Multi Mode Fiber”, Conference on Optical Fiber Com­mu­ni­ca­tion (OFC 2020), San Diego, CA, USA, March 8 – 12, paper Th1H.5
   
• M. Brehler, M. Schirwon, P. M. Krummrich, D. Göddeke: „Si­mu­la­tion of nonlinear signal propagation in multimode fibers on multi-GPU systems“, Com­mu­ni­ca­tions in Nonlinear Science and Numerical Si­mu­la­tion (2020), Vol. 84, Article No. 105150, May, pp. 1 - 13
• C. M. Spenner, H. Gerdes, P. M. Krummrich, K. Petermann: „Experimental Analysis of Stress Induced Mode Coupling in a 50 μm Graded Index Multi Mode Fiber“, 21. ITG-Fachtagung Photonische Netze (2020), Online, 24. – 25. No­vem­ber, pp. 57 – 59
• I. L. Rittner, P. M. Krummrich: “Physical Model Approach for the Spectral Hole Burning Characteristics of Erbium-Doped Fiber Amplifiers”, 21. ITG-Fachtagung Photonische Netze (2020), Online, 24. – 25. No­vem­ber, pp. 71 – 75
• P. M. Krummrich, S. Jeurink, K. Petermann: „Modelling and Optimization of Space-Division Multiplexing Amplifiers“, IEEE Photonics Society Summer Topicals Meeting Series (SUM 2020), Online, 13. – 15. Juli, pp. 1 - 2

2019:

• Lars Baudzus, Peter M. Krummrich, Low-loss planar optical waveguides based on plasma deposited silicon oxycarbide," Optical Materials Express, vol. 9, no. 7. pp. 2797-2805, 2019
   
• Lars Baudzus, Peter M. Krummrich, Efficient Low-Loss Adaptive Optical Filters Based on Silicon Oxycarbide - Liquid Crystal Hybrid Technology", Optical Fiber Com­mu­ni­ca­tion Conference. Optical Society of America, paper Th2A.3., 2019
   
• Lars Baudzus, Peter M. Krummrich, Modified downhill simplex method for fast adaption of optical filters in optical com­mu­ni­cation systems", Electronics Letters, vol. 55, no. 8, pp. 471-473, 2019
   
• Steffen Jeurink, Peter M. Krummrich "Ein­fluss von Sättigungseffekten in EDFAs für den Raummultiplexbetrieb bei Er­hö­hung der Modenanzahl zur Kapazitätssteigerung", Work­shop der ITG-Fachgruppe 5.3.1, Meiningen, Februar 2019
   
• Steffen Jeurink, Peter M. Krummrich "Impact of MDM-EDFA Saturation Effects on Mode Scaling for Capacity Increases", Optical Fiber Com­mu­ni­ca­tion Conference (OFC), San Diego, CA, USA, März 2019, paper Th1B.3
   
• Marius Brehler, Peter M. Krummrich "Impact of Nonlinear Impairments in MDM Transmissions Using Rescaled Multimode Fibers", Optical Fiber Com­mu­ni­ca­tion Conference (OFC), San Diego, CA, USA, März 2019, paper Th2A.47

2018:

• Marius Brehler, Peter M. Krummrich "Nonlinear impairment scaling with the number of mode groups in mode-multiplexed transmission over a 50 um multimode fiber", Optics Express, Vol. 26, Issue 13, pp. 16393-16401, Jun. 2018
   
• Steffen Jeurink, Peter M. Krummrich "Optimization of the Erbium Doping Profile in Erbium-Doped Fiber ", ITG-Fachtagung Photonische Netze, Leipzig, Juni 2018
   
• Marius Brehler, Peter M. Krummrich "Influence of the Kerr-Nonlinearity in MDM Transmission Sys­tems Scaling with the Number of Modes in Dependence of the Core Radius", ITG-Fachtagung Photonische Netze, Leipzig, Juni 2018
   
• Marius Brehler, Malte Schirwon, Dominik Göddeke, Peter M. Krummrich "Modeling the Kerr-Nonlinearity in Mode-Division Multiplexing Fiber Transmission Sys­tems on GPUs",Advanced Photonics Congress, Nonlinear Photonics, Zürich, Schweiz, Juli 2018, paper JTu5A.27
   
• Steffen Jeurink, Peter M. Krummrich "Multimode EDFA with Scalable Mode Selective Gain Control at 1480 nm Pump Wavelength ", IEEE Photonics Technology Letters, Vol 30, Issue 9, pp. 849-852, May 2018
   
• Steffen Jeurink, Peter M. Krummrich "Op­ti­mie­rung des Erbium-Dotierungsprofils eines EDFA für Raummultiplex- Sys­te­me mit vie­len Signalmoden", Work­shop der ITG-Fachgruppe 5.3.1, Hamburg, Februar 2018
   
• Steffen Jeurink, Peter M. Krummrich,""Multimode EDFA Designs with Reduced MDG by Considering Spatially Dependent Saturation Effects", Optical Fiber Com­mu­ni­ca­tion Conference (OFC), San Diego, CA, USA, März 2018, paper W2A.5
   
• Marius Brehler, Peter M. Krummrich ,""Numerical Estimation of Nonlinear Impairments in a 62.5 µm MMF for MDM Transmission ", Optical Fiber Com­mu­ni­ca­tion Conference (OFC), San Diego, CA, USA, März 2018, paper W2A.57

2017:

• Marius Brehler, Malte Schirwon, Dominik Göddeke, Peter M. Krummrich, "A GPU-Accelerated RK4IP Implementation for the Si­mu­la­tion of Optical Transmission Sys­tems", GPU Technology Conference Europe (GTC Europe), Mün­chen, Okto­ber 2017, poster 23028
   
• Marius Brehler, Peter M. Krummrich , "GPU-Accelerated Mixed-Precision Si­mu­la­tion of the Nonlinear Signal Propagation in Multimode Fiber", Conference on Lasers and Electro-Optics/Europe and the European Quantum Electronics Conference (CLEO/Europe-EQEC), Mün­chen, Juni 2017
   
• David Ronnenberg, Marius Brehler, Peter M. Krummrich , "Influence of Double Rayleigh Backscattering on Raman Amplified Higher Order Modulation Transmissions", Conference on Lasers and Electro-Optics/Europe and the European Quantum Electronics Conference (CLEO/Europe-EQEC), Mün­chen, Juni 2017
   
• David Ronnenberg, Marius Brehler, Peter M. Krummrich , "Numerical Si­mu­la­tion of Bit-Pattern Dependent Stimulated Raman Scattering", Conference on Lasers and Electro-Optics/Europe and the European Quantum Electronics Conference (CLEO/Europe-EQEC), Mün­chen, Juni 2017
   
• Marius Brehler, Malte Schirwon, Dominik Göddeke, Peter M. Krummrich, "A GPU-Accelerated Fourth-Order Runge-Kutta in the Interaction Picture Method for the Si­mu­la­tion of Nonlinear Signal Propagation in Multimode Fibers", IEEE/OSA J. Lightwave Technol., Vol 35, Issue 17, pp. 3622-3628, Sept. 2017
   
• Marius Brehler, Peter M. Krummrich, "Comparison of Nonlinear Impairments in Graded-Index and Trench-Assisted Graded-Index Fibers for SDM Transmissions", ITG-Fachtagung Photonische Netze, Leipzig, Mai 2017
   
• Marius Brehler, Peter M. Krummrich , "Impact of WDM Channel Count on Nonlinear Effects in MDM Transmission Sys­tems", Optical Fiber Com­mu­ni­ca­tion Conference (OFC), Los Angeles, CA, USA, März 2017, paper Th2A.63

2016:

• Marius Brehler, Peter M. Krummrich , "GPU-Accelerated Si­mu­la­tion of Space-Division Multiplexed Optical Transmission Sys­tems", GPU Technology Conference Europe (GTC Europe), Amsterdam, The Netherlands, Sep­tem­ber 2016, poster P6104
   
• L. Baudzus, P. M. Krummrich, "Low Loss Electro-Optic Polymer Based Fast Adaptive Phase Shifters Realized in Silicon Nitride and Oxynitride Waveguide Technology", MDPI Photonics 2016, 3(3), 49
   
• Peter M. Krummrich, Simon Akhtari, "Design of Efficient Few Mode Optical Amplifiers for Fiber Capacity Increase", Conference on Lasers and Electro-Optics (CLEO), San Jose, CA, USA, Juni 2016, paper STu1F.1
   
• Peter M. Krummrich, David Ronnenberg, Wolfgang Schairer, Daniel Wienold, Frank Jenau, Maximilian Herrmann, "Demanding response time requirements on coherent receivers due to fast polarization rotations caused by lightning events", Optics Express Vol. 24, Issue 11, pp. 12442-12457 (2016)
   
• Marius Brehler, Peter M. Krummrich, "Reducing the Mode Dependent OSNR Requirements in SDM Sys­tems due to Nonlinear Effects by Using Adaptive Symbol Rates", ITG-Fachtagung Photonische Netze, Leipzig, Mai 2016
   
• D. Schenk, P. M. Krummrich, "A Novel Approach to Reduce the Impact of Physical Layer Restrictions in Dynamically Switched Transparent Optical Networks ", IEEE J. Lightwave Technol., Vol. 34, No. 9, pp. 2304-2310, May, 2016.
   
• Marius Brehler, David Ronnenberg, Peter M. Krummrich , "Scaling of Nonlinear Effects in Multimode Fibers with the Number of Propagating Modes", Optical Fiber Com­mu­ni­ca­tion Conference (OFC), Anaheim, CA, USA, März 2016, paper W4I.3
   
• Marius Brehler, Peter M. Krummrich, "Challenges in the Si­mu­la­tion of Space-Division Multiplexed Transmissions in Multimode Fibers on GPUs", Work­shop der ITG-Fachgruppe 5.3.1, Berlin, 18.-19. Februar 2016

2015:

• Peter Krummrich, Martin Finkenbusch, "Selection guidelines for lumped optical amplifiers – conventional phase insensitive versus phase sensitive parametric amplification", Journal of Optics, 2015, DOI 10.1007/s12596-015-0282-5
   
• Marius Brehler, Manuel Patchou, Peter M. Krummrich, "Impact of the refractive index profile on nonlinear ef­fects in multimode fibers", ITG-Fachtagung Photonische Netze, Leipzig, Mai 2015
   
• David Schenk, Peter M. Krummrich, "Impact of Physical Layer Restrictions on the Dynamic Switching of Channels in Transparent Optical Networks", Optical Fiber Com­mu­ni­ca­tions Conference (OFC), Los Angeles, USA, März 2015, paper M2I.2
   
• Simon Akhtari, Martin Finkenbusch, Richard Winfield, Peter M. Krummrich, "Experimental Analysis of the Impact of Beating between Signal Modes on Few-Mode Erbium Doped Fiber Amplifier Per­for­mance", Optical Fiber Com­mu­ni­ca­tions Conference (OFC), Los Angeles, USA, März 2015, paper Tu3C.4
   
• Martin Finkenbusch, Marius Brehler, David Ronnenberg, Peter Krummrich, "Bitmusterabhängige Wechsel­wir­kungen zwi­schen Kanälen und der Pumpstrahlung in parametrischen optischen Verstärkern", Work­shop der ITG-Fachgruppe 5.3.1, Kiel, Februar 2015

2014:

• Peter M. Krummrich, Simon Akhtari, "Selection of energy optimized pump concepts for multi core and multi mode erbium doped fiber amplifiers", Optics Express, Vol. 22, Issue 24, pp. 30267-30280 (2014)
   
• Lars Baudzus, Peter M. Krummrich, "CDM-Based (lambda ) -OTDR for Rapid TDM- and WDM-PON Monitoring", IEEE Photonics Technology Letters, Volume:26, Issue: 12, pp. 1203-1206, June15, 2014
   
• David Schenk, Peter M. Krummrich, "Investigation of Switching Times in Dynamic Optical Networks with Regard to Physical Constraints", ITG-Fachtagung, Leipzig, Mai 2014
   
• Christopher M. Bentz, Lars Baudzus, Peter M. Krummrich, "Signal to Noise Ratio (SNR) Enhancement Comparison of Im­pul­se-, Coding- and Novel Linear-Frequency-Chirp-Based Optical Time Domain Reflectometry (OTDR) for Passive Optical Network (PON) Monitoring Based on Unique Combinations of Wavelength Selective Mirrors", Photonics 2014, 1, 33-46.
   
• Simon Akhtari, Peter Krummrich, "Auswirkung von Schwebungen zwi­schen Moden auf die Ei­gen­schaf­ten von optischen Verstärkern für räumliches Multiplexen", ITG Work­shop, Berlin, 2014
   
• Simon Akhtari, Peter M. Krummrich, "Impact of Mode Beating Effects in Optical Multi Mode Amplifiers for Space Division Multiplexing", IEEE Photonics Technology Letters, Volume: PP, Issue: 99

2013:

• Peter M. Krummrich, Simon Akhtari, "Optical Amplifiers for Cost and Energy Efficient Spatial Division Multiplexing", Frontiers in Optics, Paper FM4B.1, Orlando, USA, October 2013
   
• F. Pittalà, M. Finkenbusch, C. Zhu, F. Hauske, P. Krummrich, J. A. Nossek , "Experimental Demonstration of Train­ing-Aided Frequency Domain Equalization in Hybrid WDM Sys­tems with 40-Gb/s PDM-QPSK and 10-Gb/s OOK Channels", Signal Processing in Photonic Com­mu­ni­ca­tions (SPPCom), Rio Grande, PuertoRico, Juli 2013
   
• Christopher M. Bentz, Daniel Fritzsche, Erik Weis, and Peter M. Krummrich, "Field Trial With a FTTH/PON Monitoring Technique Based on Unique Wavelength-Selective Mirror Combinations [Invited]", Journal of Optical Com­mu­ni­ca­tions and Networking (JOCN), Vol. 5, No. 10/October 2013
   
• Christopher M. Bentz, Lars Baudzus, Peter M. Krummrich, "Measurements of a Novel FTTH/PON Monitoring Technique based on Unique Wavelength-Selective Mirror Combinations using Composite Coding Scheme OTDR for SNR Enhancement", 14. ITG Fachtagung Photonische Netze, Leipzig, May 2013
   
• C. Zhu, F. Pittalà, M. Finkenbusch, P. M. Krummrich, F. Hauske, A. Tran, J. Nossek, T. Anderson, "Overhead-Free Channel Estimation using Implicit Train­ing for Polarization-Multiplexed Coherent Optical Sys­tems", Optical Fiber Com­mu­ni­ca­tions Conference (OFC), Anaheim, USA, März 2013
   
• Christopher M. Bentz, Daniel Fritzsche, Erik Weis, Peter M. Krummrich, "Field trial of a novel FTTH/PON monitoring technique based on unique wavelength-selective mirror com­bi­na­tions", Optical Fiber Com­mu­ni­ca­tion Conference and Exposition and National Fiber Optic Engineers Conference (OFC/NFOEC), Anaheim, March 2013, NM2I.1
   
• Simon Akhtari, Peter Krummrich, "Mutli mode optical amplifiers with flexible wavelength and spatial channel count", Optical Fiber Com­mu­ni­ca­tions Conference (OFC), Anaheim, USA, März 2013, paper JTh2A.21
   
• Simon Akhtari, Peter M. Krummrich, "Optical amplifier with rotationally symmetrical pump modes for enhanced mode multiplexing", Photonics Technology Letters, IEEE, Volume: 24 , Issue: 23, Page(s): 2097-2100

2012:

• J. L. Vizcaino, Y. Ye, V. López, F. Jiménez, R. Duque, P. M. Krummrich, "Cost Evaluation for Flexible-grid Optical Networks", IEEE Globecom (2012), Anaheim, California, USA, December 3-7, Work­shop: Flexible Optical Networks
   
• J. L. Vizcaino, Y. Ye, V. López, F. Jiménez, R. Duque, P. M. Krummrich, "On the Energy Efficiency of Survivable Optical Trans­port Networks with Flexible-grid", 38th European Conference on Optical Com­mu­ni­ca­tion (ECOC 2012), Amsterdam, The Netherlands, 16. – 20. Sep­tem­ber, paper P5.05
   
• Simon Akhtari, Peter Krummrich, "Numerische Si­mu­la­tion von mehrmodigen optischen Verstärkern", ITG Work­shop, Nürnberg, Juli, 2012
   
• Christopher M. Bentz, Peter M. Krummrich, "Zuverlässigkeitsuntersuchung zur PON-Überwachungsmethode Kombinatorik kaskadierter Spiegel (Kaskatorik) bei vie­len Teil­neh­mern und geringer Ortsauflösung der Messeinrichtung", 13. ITG Fachtagung Photonische Netze, Leipzig, May 2012
   
• Matthias Westhäuser, Martin Finkenbusch, Simon Akhtari, Peter M. Krummrich, "Mitigation of combined PMD- and crosstalk-induced signal distortions in spatially-multiplexed multi-core fiber networks", Signal Processing in Photonics Com­mu­ni­ca­tions (SPPCom), Colorado Springs, USA, June 2012
   
• Matthias Westhäuser, Simon Akhtari, Martin Finkenbusch, Peter M. Krummrich, "Reduction of crosstalk-induced OSNR penalties in high bit rate optical spatially multiplexed systems", Signal Processing in Photonics Com­mu­ni­ca­tions (SPPCom), Colorado Springs, USA, June 2012
   
• M. Westhäuser, S. Akhtari, M. Finkenbusch, P.M. Krummrich, "Quantifizierung und Reduktion von OSNR-Einbußen in hochbitratigen Mehrkernfasersystemen", ITG Fachtagung "Photonische Netze", Leipzig, Mai 2012

2011:

• M. Westhäuser, S. Akhtari, P.M. Krummrich, "Quantifizierung von OSNR-Einbußen in hochbitratigen Mehrkern- und Mehrmodenfasersystemen", ITG Work­shop, Karls­ru­he, No­vem­ber 2011
   
• Christopher M. Bentz, Stephan Pachnicke, Peter M. Krummrich, "Combinatorial wavelength selective mirror concatenation for unambiguous subscriber line monitoring in FTTH/PON with high subscriber counts", IEEE Photonics Conference, Arlington, October 2011, ThFF1
   
• P. Krummrich, "Optical Amplification for Capacity Increase in Long Haul Transmission Sys­tems by Spatial Multiplexing", IEEE Photonics Conference, Arlington, USA, October 2011
   
• M. Westhäuser, M. Finkenbusch, C. Remmersmann, S. Pachnicke, P. Krummrich, "Optical Filter-Based Mitigation of Group Delay Ripple- and PMD-Related Penalties for High Capacity Metro Networks", IEEE J. Lightw. Technol., Vol 29, No. 16, Au­gust 15, 2011
   
• M. Westhäuser, C. Remmersmann, S. Pachnicke, P. Krummrich, "Optical Equalization of PMD-Induced Penalties in 112 Gbit/s Metro Networks", Signal Processing in Photonics Com­mu­ni­ca­tions (SPPCom) Topical Meeting, Toronto, Canada, June 2011
   
• C. Remmersmann, M. Westhäuser, S. Pachnicke, L. Rapp, P. Krummrich,"Un­ter­su­chung und Op­ti­mie­rung der Reichweite von WDM-Übertragungssystemen unter Be­rück­sich­ti­gung stochastischer Schwankungen von Faserparametern", ITG-Conference "Photonic Networks", Leipzig, May 2011
   
• S. Pachnicke, H. Kagba, P. Krummrich, "Load Adaptive Optical-Bypassing for Reducing Core Network Energy Consumption", ITG-Conference "Photonic Networks", Leipzig, May 2011
   
• S. Pachnicke, A. Chachaj, C. Remmersmann, P. Krummrich, "Fast Parallelized Si­mu­la­tion of 112 Gb/s CP-QPSK Transmission Sys­tems using Stratified Monte-Carlo Sampling", Optical Fiber Com­mu­ni­ca­tions Conference, Los Angeles, March 2011
   
• P. Krummrich, K. Petermann, "Evaluation of Potential Optical Amplifier Concepts for Coherent Mode Multiplexing", Optical Fiber Com­mu­ni­ca­tions Conference, Los Angeles, March 2011
   
• S. Pachnicke, A. Chachaj, C. Remmersmann, P. Krummrich, "Schnelle, parallelisierte Si­mu­la­tion von 112 Gb/s CP-QPSK Übertragungssystemen mit automatischer Wahl von einfacher und doppelter Gleitkommagenauigkeit", ITG-Work­shop, Dort­mund, Februar 2011

2010:

• A. Juarez, S. Warm, C. Bunge, P. Krummrich, K. Petermann, "Perspectives of Principal Mode Transmission in a Multi-mode Fiber", European Conference on Optical Com­mu­ni­ca­tion (ECOC 2010), Torino, Sep­tem­ber 2010
   
• S. Pachnicke, A. Chachaj, M. Helf, P. Krummrich, "Fast Parallel Si­mu­la­tion of Fiber Optical Com­mu­ni­ca­tion Sys­tems Accelerated by a Graphics Processing Unit", IEEE International Conference on Transparent Optical Networks (ICTON 2010), Munich, Germany, June 2010
   
• M. Westhäuser, C. Remmersmann, S. Pachnicke, B. Johansson, P. Krummrich, "Optimization of Optical Equalization of Group Delay Ripple-Induced Penalties from Fiber Bragg Gratings in 112 Gbit/s Metro Networks", Optics and Photonics Congress ?Advanced Photonics?, Karls­ru­he, Germany, June 2010
   
• S. Pachnicke, A. Chachaj, M. Helf, P. Krummrich, "Beschleunigte Si­mu­la­tion von 112 Gb/s PolMux QPSK Systemen durch Parallelisierung auf Graphikhardware", ITG-Work­shop, Mün­chen, Juni 2010
   
• M. Westhäuser, C. Remmersmann, S. Pachnicke, B. Johansson, P. Krummrich, "Reduzierung von FBG-induzierten Gruppenlaufzeitschwankungen in 112 Gbit/s-Metronetzwerken mit Hilfe von generisch initialisierten Transversalfiltern", ITG-Fachtagung "Photonische Netze", Leipzig, Mai 2010
   
• C. Remmersmann, M. Westhäuser, S. Pachnicke, G. Göger, G. Kerner, P. Krummrich, "Equalization of first and second order PMD in 100 GBit/s PolMux Transmission using Optical Butterfly FIR Filters", Optical Fiber Com­mu­ni­ca­tions Conference, San Diego, March 2010

2009:

• S. Pachnicke, M. Helf, P. Krummrich, "GPU-beschleunigte numerische Si­mu­la­tion faseroptischer Übertragungssysteme", ITG-Work­shop, Berlin, No­vem­ber 2009
   
• M. Westhäuser, C. Remmersmann, S. Pachnicke, P. Krummrich, "Entzerrung von CFBG-induzierten Gruppenlaufzeitschwankungen mit Hilfe von FIR-Filtern in 112 GBit/s-Metronetzen", ITG-Work­shop, Berlin, 13. No­vem­ber 2009
   
• S. Pachnicke, S. Özdür, H. Griesser, C. Fürst, P. Krummrich, "Sensitivity to Signal Quantization of 43 Gb/s and 107 Gb/s Optical 16-QAM OFDM Transmission with Coherent Detection", Elsevier J. Opt. Fiber Technol., vol. 15, no. 5, pp. 414-419, October 2009
   
• S. Pachnicke, N. Luck, G. Sahin, J. Mueller, G. Reese, P. Krummrich, "Analysis of Static Versus Fully-Dynamic Routing in IP/GMPLS over WDM Optical Networks with Physical-Layer Impairment Constraints", European Conference on Optical Com­mu­ni­ca­tion (ECOC 2009), Vienna, Sep­tem­ber 2009
   
• S. Pachnicke, N. Luck, P. Krummrich, "Online Physical-Layer Impairment-Aware Routing with Quality of Transmission Constraints in Translucent Optical Networks", IEEE International Conference on Transparent Optical Networks (ICTON 2009), Ponta Delgada, Por­tu­gal, June 2009
   
• S. Pachnicke, N. Luck, P. Krummrich, "Novel Physical-Layer Impairment-Aware Routing Algorithm for Translucent Optical Networks with 43 Gb/s and 107 Gb/s Channels", IEEE International Conference on Transparent Optical Networks (ICTON 2009), Ponta Delgada, Por­tu­gal
   
• C. Remmersmann, M. Westhäuser, S. Pachnicke, G. Goeger, G. Kerner, P. Krummrich, "Abschätzung der er­for­der­lichen OSNR-Anhebung für kaskadierte optische Filter mit herstellungsbedingt stochastischen Ei­gen­schaf­ten", ITG-Fachtagung "Photonische Netze", Leipzig, Mai 2009
   
• D. Teufer, S. Pachnicke, P. Krummrich, "Modellierung und Si­mu­la­tion optischer IIR-Filterstrukturen zur adaptiven Kompensation chromatischer Dispersion in ultrahochbitratigen optischen Übertragungssystemen", ITG-Fachtagung "Photonische Netze", Leipzig, Mai 2009
   
• M. Fadel, M. Bulters, M. Niemand, E. Voges, P. Krummrich, "Low-Loss and Low-Birefringence High-Contrast Silicon-Oxynitride Waveguides for Optical Com­mu­ni­ca­tion", IEEE J. Lightw. Technol., vol. 27, no. 6, pp. 698-705, March 2009
   
• S. Pachnicke, S. Özdür, H. Griesser, C. Fürst, P. Krummrich, "Quantisierungsempfindlichkeit von kohärentem 16-QAM OFDM mit 43 Gb/s und 107 Gb/s Kanaldatenrate", ITG-Work­shop, Erlangen, März 2009
   
• S. Pachnicke, N. Luck, H. Müller, P. Krummrich, "Multidimensional Meta-Model Based Optimization of Optical Transmission Sys­tems", IEEE J. Lightw. Technol., vol. 27, no. 13, pp. 2307-2314, July 2009

2008:

• S. Pachnicke, P. Krummrich, "Constraint-Based Routing in Path-Protected Translucent Networks Considering Fiber Nonlinearities and Polarization Mode Dispersion", Proc. Of APOC 2008, Hangzhou, China, October 2008
   
• S. Pachnicke, P. Krummrich, "Reduction of the Required Number of Electrical Regenerators by Physical Layer Impairment Aware Regenerator Placement and Routing", European Conference on Optical Com­mu­ni­ca­tion (ECOC 2008), Brussels, Sep­tem­ber 2008.
   
• M. Westhäuser, C. Remmersmann, S. Pachnicke, P. Krummrich, "Multikanonische Ver­fah­ren zur Si­mu­la­tion der Gruppenlaufzeitschwankungen von Faser-Bragg-Gittern", ITG-Work­shop, Kiel, Juni 2008
   
• S. Pachnicke, T. Paschenda, P. Krummrich, "Ver­mitt­lung unter Be­rück­sich­ti­gung von Randbedingungen durch Polarisationsmodendispersion und Fasernichtlinearitäten in transparenten optischen Übertragungsnetzwerken", ITG-Fachtagung "Photonische Netze", Leipzig, April 2008
   
• S. Pachnicke, T. Paschenda, P. Krummrich, "Assessment of a Constraint-Based Routing Algorithm for Translucent 10-Gb/s DWDM Networks Considering Fiber Nonlinearities", OSA J. Opt. Netw., vol. 7, no. 4, pp. 365-377, 2008
   
• S. Pachnicke, T. Paschenda, P. Krummrich, "Physical Impairment Based Regenerator Placement and Routing in Translucent Optical Networks", Optical Fiber Com­mu­ni­ca­tions Conference, OFC 2008, San Diego, February 2008
   
• M. Windmann, P. Krummrich, "Histogram-Based Bit Error Ratio Estimator for Differential Modulation Formats", Optical Fiber Com­mu­ni­ca­tions Conference, OFC 2008, San Diego, February 2008
   
• T. Eisenburger, E. Voges, P. Krummrich, D. Peier, "Breitbandige Anregung von feldvariablen Kammern durch phasengesteuerte Antennenarrays", Tagungsband EMV 2008 Düsseldorf, S. 571-578, VDE Verlag GmbH Berlin, 2008

2007:

• S. Pachnicke, T. Paschenda, P. Krummrich, "Physical impairment-based regenerator placement and routing", ITG-Work­shop, Stuttgart, No­vem­ber 2007
   
• S. Pachnicke, E. Gottwald, P. Krummrich, E. Voges, "Combined Impact of Raman and EDFA Transients on Long Haul Transmission System Per­for­mance", European Conference on Optical Com­mu­ni­ca­tion (ECOC 2007), Berlin, Sep­tem­ber 2007.
   
• P. Krummrich, S. Pachnicke, M. Windmann, "(Invited) Interface options for 100 GbE from a physical layer perspective", Optics East 2007, Boston, Sep­tem­ber 2007
   
• S. Pachnicke, E. Gottwald, P. Krummrich, E. Voges, "Transient Gain Dynamics in Long-Haul Transmission Sys­tems with Electronic EDFA Gain Control", OSA J. Opt. Netw., vol. 6 , no. 9, pp.1129-1137, Sep­tem­ber 2007
   
• S. Pachnicke, E. Gottwald, P. Krummrich, E. Voges, i>Heuristic Approximation of Transient Gain Dynamics due to Network Reconfiguration", OECC 2007, Yokohama, Japan, Juli 2007
   
• S. Pachnicke, E. Gottwald, P. Krummrich, E. Voges, "Transientenverhalten gewinngeregelter EDFAs in der Weitverkehrsübertragung", ITG-Fachtagung "Photonische Netze", Mai 2007
   
• S. Pachnicke, M. Obholz, E. Voges, P. Krummrich, E. Gottwald, "Electronic EDFA Gain Control for the Suppression of Transient Gain Dynamics in Long-Haul Transmission Sys­tems", Optical Fiber Com­mu­ni­ca­tions Conference, OFC 2007, Anaheim, March 2007.
   
• P. Krummrich, M. Bohn, "A Novel, Easy to Use Emulator for Deterministic Ge­ne­ra­ti­on of Pure First and Second Order PMD", Conference on Optical Fiber Com­mu­ni­ca­tion (OFC 2007), March 25-29, Anaheim, CA, USA, OMH3
   
• S. L. Jansen, R. H. Derksen, C. Schubert, X. Zhou, M. Birk, C.-J. Weiske, M. Bohn, D. v. d. Borne, P. Krummrich, M. Möller, F. Horst, B.-J. Offrein, H. d. Waardt, G.-D. Khoe, A. Kirstädter, "107-Gb/s Full-ETDM Transmission over Field Installed Fiber Using Vestigial Sideband Modulation", Conference on Optical Fiber Com­mu­ni­ca­tion (OFC 2007), March 25-29, Anaheim, CA, USA, OWE3
   
• S. L. Jansen, I. Morita, D. v. d. Borne, G.-D. Khoe, H. d. Waardt, P. Krummrich, "Experimental Study of XPM in 10-Gb/s NRZ Pre-Compensated Transmission Sys­tems", Conference on Optical Fiber Com­mu­ni­ca­tion (OFC 2007), March 25-29, Anaheim, CA, USA, OThS6
   
• P. Krummrich, "Advanced modulation formats for more robust optical transmission systems", AEU - International Journal of Electronics and Com­mu­ni­ca­tions, vol. 61, no. 3, pp. 141-146, March 2007
   
• S. Pachnicke, P. Krummrich, E. Gottwald, E. Voges, "Analyse von Transienten in Metro-Netzen mit Kanaldatenraten von 107 Gb/s", ITG-Work­shop, Mün­chen, Februar 2007

2006:

• S. L. Jansen, D. van den Borne, P. Krummrich, H.Suche, W. Sohler, G. D. Khoe, H. de Waardt, "Transmission of 42.8-Gbit/s RZ-DQPSK over 42x94.5-km SSMF spans using optical phase conjugation and EDFA only amplification", Proceedings of the European Conference on Optical Com­mu­ni­ca­tion (ECOC 2006), Sept. 24 ? 28, Cannes, France, Vol. 1, Mo 3.2.3, pp. 5 ? 6
   
• S. Pachnicke, P. Krummrich, E. Voges, "Simulationsumgebung für Transienten in transparenten optischen Übertragungsnetzen", ITG-Work­shop, Nürnberg, Juli 2006.
   
• S. L. Jansen, D. van den Borne, P. Krummrich, S. Spälter, G.-D. Khoe, H. de Waardt, "Long haul DWDM transmission systems employing optical phase conjugation", IEEE Journal of Selected Topics in Quantum Electronics (2006), Vol. 12, No. 4, pp. 505-520
   
• S. L. Jansen, D. van den Borne, G.-D. Khoe, H. de Waardt, P. Krummrich, S. Spälter, "Phase conjugation for increased signal robustness", Conference on Optical Fiber Com­mu­ni­ca­tion (OFC 2006), March 5-10, Anaheim, CA, USA, OTuK3
   
• B. Spinnler, P. Krummrich, E.-D. Schmidt, "Chromatic dispersion tolerance of coherent optical communications systems with electrical equalization", Conference on Optical Fiber Com­mu­ni­ca­tion (OFC 2006), March 5-10, Anaheim, CA, USA, OWB2
   
• D. van den Borne, S. L. Jansen, E. Gottwald, P. Krummrich, G.-D. Khoe, H. de Waardt, "1.6-b/s/Hz spectrally efficient 40 x 85.6-Gb/s transmission over 1,700 km of SSMF using POLMUX-RZ-DQPSK", Conference on Optical Fiber Com­mu­ni­ca­tion (OFC 2006), March 5-10, Anaheim, CA, USA, PDP34
   
• S. L. Jansen, D. van den Borne, B. Spinnler, S. Calabro, H. Suche, P. Krummrich, W. Sohler, G.-D. Khoe, H. de Waardt, "Optical phase conjugation for ultra long-haul phase-shift-keyed transmission", IEEE Journal of Lightwave Technology, Vol. 24, No. 1, Jan. 2006, pp. 54 ? 64

2005:

• D. v. d. Borne, S. L. Jansen, G.-D. Khoe, H. d. Waardt, S. Calabro, P. Krummrich, W. Schairer, C.-J. Weiske, "Interchannel nonlinear transmission penalties in polarization-multiplexed 2 * 10 Gbit/s differential phase-shift keying transmission", Optics Letters (2005), Vol. 30, No. 12, pp. 1443 - 1445
   
• S. L. Jansen; H. Chayet, E. Granot, S. B. Ezra, D. van den Borne, P. Krummrich, D. Chen, G. D. Khoe, H. De Waardt, "Wavelength conversion of a 40-gb/s NRZ signal across the entire C-band by an asymmetric Sagnac loop", IEEE Photonics Technology Letters (2005), Vol. 17, No. 10, Oct., pp. 2137 ? 2139
   
• A. V. Turukhin, D. Al-Salameh, E. Gonzales, P. Krummrich, S. Lumish, L. Rapp, "Time-Resolved Measurements of Q-factor in 560-km Transmission Link with Transient Control Amlifiers", Proceedings of the European Conference on Optical Com­mu­ni­ca­tion (ECOC 2005), Sept. 25 ? 29, Glasgow, Scotland, Vol. 3, We2.3.4, pp. 395 ? 396
   
• M. Serbay, C. Wree, A. Schöpflin, C.-J. Weiske, D. v.d.Borne, S. L. Jansen, G.-D. Khoe, P. Krummrich, P. Leisching, W. Rosenkranz, "Coding Gain of FEC Encoded 21.42Gb/s RZ-DQPSK Using an Electrical Differential Quaternary Precoder", Proceedings of the European Conference on Optical Com­mu­ni­ca­tion (ECOC 2005), Sept. 25 ? 29, Glasgow, Scotland, Vol. 3, We4.P.010, pp. 521 ? 522
   
• S. L. Jansen, D. v.d.Borne, P. Krummrich, G.-D. Khoe, H. deWaardt, "Experimental Comparison of Optical Phase Conjugation and DCF Aided DWDM 2x10.7Gbit/s DQPSK Transmission", Proceedings of the European Conference on Optical Com­mu­ni­ca­tion (ECOC 2005), Sept. 25 ? 29, Glasgow, Scotland, Vol. 4, Th2.2.3, pp. 849 ? 850
   
• S. L. Jansen, D. v.d.Borne, A. Schöpflin, E. Gottwald, P. Krummrich, G.-D. Khoe, H. deWaardt, "26x42.8-Gbit/s DQPSK Transmission with 0.8-bit/s/Hz Spectral Efficiency over 4,500-km SSMF using Optical Phase Conjugation", Proceedings of the European Conference on Optical Com­mu­ni­ca­tion (ECOC 2005), Sept. 25 ? 29, Glasgow, Scotland, Vol. 6, Th4.1.5, pp 9 ? 10
   
• P. Krummrich, C.-J. Weiske, W. Schairer, F.-J.Quirin, "Experimental investigation of MPI tolerances of modulation formats and con­se­quences for Raman amplification", Conference on Optical Amplifiers and their Applications (OAA 2005), Budapest, Hungary, Aug. 7 ? 10, MD3
   
• T. Duthel, S. L. Jansen, P. Krummrich, M. Otto, C. G. Schäffer, "Faseroptische Delay-Line-Filter zur Gruppenlaufzeitentzerrung in schnellen optischen Übertragungssystemen", 6. ITG-Fachtagung Photonische Netze (2005), 2. ? 3. Mai, Leipzig, pp. 191 ? 194
   
• P. Krummrich, M. Birk, "Experimental Investigation of Compensation of Raman Induced Power Transients from WDM Channel Interactions", IEEE Photonics Technology Letters (2005), Vol. 17, No. 5, May, pp. 1094 ? 1096
   
• S. L. Jansen, D. van den Borne, C. Climent Monsalve, S. Spälter, P. Krummrich, G. D. Khoe, H. de Waardt, "Reduction of Gordon-Mollenauer Phase Noise by Midlink Spectral Inversion", IEEE Photonics Technology Letters (2005), Vol. 17, No. 4, April, pp. 923 ? 925
   
• M. Bohn, P. Krummrich, W. Rosenkranz, F. Horst, B. J. Offrein, G. L. Bona, "Automatic Control of Optical Equalizers", Conference on Optical Fiber Com­mu­ni­ca­tion (OFC 2005), March 6 - 11, Anaheim, CA, USA, OWO4
   
• T. Duthel, S. L. Jansen, P. Krummrich, M. Otto, C. G. Schäffer, "Multi-Channel Residual Dispersion Compensation in a 40 Gb/s WDM System Utilizing a Single All-Fiber Delay Line Filter", Conference on Optical Fiber Com­mu­ni­ca­tion (OFC 2005), March 6 ? 11, Anaheim, CA, USA, JWA20
   
• S. L. Jansen, D. van den Borne, G.-D. Khoe, H. de Waardt, C. Climent Monsalve, S. Spälter, P. Krummrich, "Reduction of Nonlinear Phase Noise by Mid-Link Spectral Inversion in a DPSK Based Transmission System", Conference on Optical Fiber Com­mu­ni­ca­tion (OFC 2005), March 6 ? 11, Anaheim, CA, USA, OThO5
   
• P. Krummrich, E.-D. Schmidt, W. Weiershausen, A. Mattheus, "Field Trial Results on Sta­tis­tics of Fast Polarization Changes in Long Haul WDM Transmission Sys­tems", Conference on Optical Fiber Com­mu­ni­ca­tion (OFC 2005), March 6 ? 11, Anaheim, CA, USA, OThT6
   
• S. L. Jansen, D. v. d. Borne, C. Climent, M. Serbay, C.-J. Weiske, H. Suche, P. Krummrich, S. Spälter, S. Calabro, N. Hecker-Denschlag, P. Leisching, W. Rosenkranz, W. Sohler, G.-D. Khoe, T. Koonen, H. d. Waardt, "10,200km 22x2x10Gbit/s RZ-DQPSK dense WDM Transmission without inline dispersion compensation through optical phase conjugation", Conference on Optical Fiber Com­mu­ni­ca­tion (OFC 2005), March 6 ? 11, Anaheim, CA, USA, PDP28
   
• P. Krummrich, "Steigerung der Flexibilität pho­to­ni­scher Netze durch verteilte Raman-Verstärkung", Work­shop der ITG-Fachgruppe 5.3.1 (2005), 10. ? 11. Februar, Dort­mund, Deutsch­land

2004:

• T. Duthel, S.L. Jansen, M. Otto, P. Krummrich, C. G. Schäffer, "Tunable all-fibre delay line filter for residual dispersion compensation in 40 Gb/s systems", Electronics Letters (2004), Vol. 40, No. 20, Sept. 30, pp. 1291 ? 1292
   
• P. Krummrich, N. Hecker-Denschlag, A. Hodzic, J. Fischer, "Steigerung der Dispersionstoleranz durch bitweise alternierende Polarisation", Work­shop der ITG-Fachgruppe 5.3.1 (2004), 13. ? 14. Mai, Mün­chen, Deutsch­land
   
• P. Krummrich, R. E. Neuhauser, H.-J. Schmidtke, H. Zech, M. Birk, "Compensation of Raman transients in optical networks", Conference on Optical Fiber Com­mu­ni­ca­tion (OFC 2004), Feb. 22 ? 27, Los Angeles, CA, USA, MF82
   
• P. Krummrich, K. Kotten, "Extremely fast (microsecond timescale) polarization changes in high speed long haul WDM transmission systems", Conference on Optical Fiber Com­mu­ni­ca­tion (OFC 2004), Feb. 22 ? 27, Los Angeles, CA, USA, FI3
   
• M. Bohn, W. Rosenkranz, P. Krummrich, F. Horst, B. J. Offrein, G. L. Bona, "Experimental verification of combined adaptive PMD and GVD compensation in a 40 Gb/s transmission using integrated optical FIR filters and spectrum monitoring", Conference on Optical Fiber Com­mu­ni­ca­tion (OFC 2004), Feb. 22 ? 27, Los Angeles, CA, USA, TuG3
   
• M. Bohn, W. Rosenkranz, P. Krummrich, "Adaptive distortion compensation with integrated optical finite impulse response filters in high bitrate optical com­mu­ni­cation systems", IEEE Journal of Selected Topics in Quantum Electronics (2004), Vol. 10, No. 2, pp. 273 ? 280

2003:

• P. Krummrich, "Vergleich der Gauß-Näherung mit der exakten Lö­sung bei der Be­rech­nung von Bitfehlern auf­grund des Bitmuster-abhängigen Kanal-Übersprechens durch stimulierte Raman-Streuung", Work­shop der ITG-Fachgruppe 5.3.1 (2003), 20. ? 21. Nov., Backnang, Deutsch­land
   
• C. Wree, N. Hecker-Denschlag, E. Gottwald, P. Krummrich, J. Leibrich, E.-D. Schmidt, B. Lankl, W. Rosenkranz, "High spectral efficiency 1.6-b/s/Hz transmission (8 x 40 Gb/s with a 25 GHz grid) over 200-km SSMF using RZ-DQPSK and polarization multiplexing", Photonics Technology Letters (2003), Vol. 15, No. 9, pp. 1303 ? 1305
   
• M. Bohn, F. Horst, B. J. Offrein, G. L. Bona, W. Rosenkranz, P. Krummrich, "Simultaneous Adaptive Equalization of Group Velocity and Polarization Mode Dispersion at 40 Gb/s with Integrated Optical FIR-Filters and Electrical Spectrum Monitoring as Feedback", Proceedings of the 29th European Conference on Optical Com­mu­ni­ca­tion (ECOC 2003), Sept. 21 ? 25, Rimini, Italy, Vol. 4, Th2.2.4, pp. 954 ? 955
   
• J. Wuttke, P. Krummrich, J. Rösch, "Polarization Oscillations in Aerial Fiber caused by Wind and Power-Line Current", Photonics Technology Letters (2003), Vol. 15, No. 6, June, pp. 882 ? 884
   
• P. M. Krummrich, B. Lankl, "Due diligence in modulation formats still leads to NRZ", Lightwave (2003), Aug., pp. 33 ? 39
   
• P. Krummrich, "Raman impairments in WDM systems", in M. N. Islam (editor): \\\

2002:

• P. Krummrich, C.-J. Weiske, A. Schöpflin, B. Kessler, B. Lankl, "Reduction of pattern dependent Raman scattering crosstalk by codirectional Raman pumping", Conference on Optical Amplifiers and their Applications (OAA 2002), July 14 ? 17, Vancouver, Canada, OTuA3, pp. 1 ? 3
   
• P. Krummrich, E. Gottwald, C.-J. Weiske, A. Schöpflin, K. Kotten, B. Lankl, "40 Gbit/s ETDM for long haul WDM transmission", Conference Proceedings IEEE/LEOS Annual Meeting (LEOS 2002), Nov. 10 ? 14, Glasgow, Scotland, Vol. 1, MI1, pp. 71 ? 72
   
• P. Krummrich, B. Lankl, "Design of distributed Raman amplifiers for 40 Gbps/ch WDM transmission systems", 7th Optoelectronics and Com­mu­ni­ca­tions Conference (OECC 2002), July 8 ? 12, Yokohama, Japan, 10D1-2, pp. 166 ? 167
   
• P. Krummrich, E. Gottwald, N. E. Hecker, C.-J. Weiske, A. Schöpflin, A. Färbert, K. Kotten, "40 Gbit/s ETDM for multi terabit/s long haul WDM transmission", IEICE Transactions on Com­mu­ni­ca­tions (2002), Vol. E85-B, No. 5, pp. 336 ? 373
   
• P. Krummrich, E. Gottwald, N. E. Hecker, C.-J. Weiske, A. Schöpflin, K. Kotten and B. Lankl, "40 Gbit/s ETDM for multi terabit/s long haul WDM transmission", Digest of the 2nd Joint Symposium on Opto- and Microelectronic Devices (SODC 2002), March 10 - 16, Stuttgart, pp. 16 ? 21
   
• P. Krummrich, E. Gottwald, K. Kotten, H. Geiger, C. Glingener, C. Scheerer, G. Fischer, "Übertragungsstrecken mit Wellenlängenmultiplexbetrieb", er­schie­nen in: E. Voges, K. Petermann (Hrsg.) ?Optische Kom­mu­ni­ka­ti­ons­tech­nik?, Berlin, Springer (2002), pp. 898 ? 921

2001:

• P. Krummrich, R. E. Neuhauser, H. Bock, W. Fischler, C. Glingener, "System performance im­prove­ments by codirectional Raman pumping of the transmission fiber", 27th European Conference on Optical Com­mu­ni­ca­tion (ECOC 2001), Sept. 30 ? Oct. 4, Amsterdam, Netherlands, Vol. 2, Tu.A.1.4, pp. 114 ? 115
   
• N. E. Hecker, E. Gottwald, K. Kotten, C.-J. Weiske, A. Schöpflin, P. Krummrich, C. Glingener, "Automated polarization control demonstrated in a 1.28 Tbit/s (16x2x40 Gbit/s) polarization multiplexed DWDM field trial", 27th European Conference on Optical Com­mu­ni­ca­tion (ECOC 2001), Sept. 30 ? Oct. 4, Amsterdam, Niederlande, Vol. 1, Mo.L.3.1, pp. 86 ? 87
   
• P. Krummrich, R. E. Neuhauser, C. Glingener, "Raman plus EDFA vs. Raman only amplification in terrestrial long haul WDM transmission", Conference on Optical Amplifiers and their Applications (OAA 2001), Stresa, Italy, July 1 ? 4, OMD5
   
• W. Fischler, A. Richter, R. E. Neuhauser, A. Mayer, H. Bock, P. Krummrich, J.-P. Elbers, C. Glingener, "All-Optical Networking im deutschlandweiten DWDM Feldversuch KomNet", ITG 2001, Dresden
   
• A. Richter, H. Bock, W. Fischler, P. Leisching, P. Krummrich, A. Mayer, R. E. Neuhauser, J. P. Elbers, C. Glingener, "All-Optical networking in the KomNet DWDM field trial", Fotonica 2001, Ischia, Italien
   
• S. Spälter, G. Mohs, N. Hecker, A. Schöpflin, E. Gottwald, P. Krummrich, C.-J. Weiske, K. Kotten, C. Glingener, "Single-channel data rates beyond 40 Gbit/s", NOC 2001, Ipswitch, UK
   
• D. Chen, S. Wheeler, D. Nguyen, A. Färbert, A. Schöpflin, A. Richter, C.-J. Weiske, K. Kotten, P. Krummrich, A. Schex, C. Glingener, "3.2 Tb/s field trial (80 x 40 Gb/s) over 3x82 km SSMF using FEC, Raman and tunable dispersion compensation", Optical Fiber Com­mu­ni­ca­tion Conference (OFC 2001), Anaheim, CA, USA, PD36
   
• R. E. Neuhauser, P. Krummrich, H. Bock, C. Glingener, "Impact of nonlinear pump interactions on broadband distributed Raman amplification", Optical Fiber Com­mu­ni­ca­tion Conference (OFC 2001), Anaheim, CA, USA, MA4
   
• A. Richter, H. Bock, W. Fischler, P. Leisching, P. Krummrich, A. Mayer, R. E. Neuhauser, J. P. Elbers, C. Glingener, "Germany-wide DWDM field trial: Transparent connection of a long haul link and a multiclient metro network", Optical Fiber Com­mu­ni­ca­tion Conference (OFC 2001), Anaheim, CA, USA, ML3
   
• P. Krummrich, R. E. Neuhauser and C. Glingener, "Bandwidth limitations of broadband distributed Raman fiber amplifiers for WDM systems", Optical Fiber Com­mu­ni­ca­tion Conference (OFC 2001), Anaheim, CA, USA, MI3, pp. 1 ? 3

2000:

• P. Krummrich, R. Neuhauser, G. Fischer, "Experimental comparison of Raman thresholds of different transmission fiber types", 26th European Conference on Optical Com­mu­ni­ca­tion (ECOC 2000), Sept. 3 ? 7, Munich, Germany, Vol. 3, P1.5, pp. 133 ? 134
   
• P. Krummrich, E. Gottwald, A. Schöpflin, C.-J. Weiske, K. Kotten, G. Fischer, "40 Gb/s ETDM for long haul WDM transmission", 26th European Conference on Optical Com­mu­ni­ca­tion (ECOC 2000), Sept. 3 ? 7, Munich, Germany, Vol. 4, 10.1.1, pp. 13 ? 14
   
• P. Krummrich, E. Gottwald, A. Mayer, R. Neuhauser, G. Fischer, "Channel power transients in photonic networks caused by stimulated Raman scattering", Conference on Optical Amplifiers and their Applications (OAA 2000), Quebec, Canada, July 9 ? 12, OtuC6, pp. 143 ? 145
   
• P. Krummrich, C. Glingener, C. Scheerer, E. Gottwald, A. Schöpflin, G. Fischer, "Höchstbitratige WDM-Übertragungssysteme für die Weitverkehrstechnik", ONLINE 2000, 31.01. - 03.02.2000, Düsseldorf, Symposium I-4, Vor­trag C142

1999:

• P. Krummrich, E. Gottwald, G. Fischer, "Theoretischer Entwurf und Realisierung eines kommerziellen WDM-Sys­tems", Work­shop ITG Fachgruppe 5.3.1 (1999), 18.-19. Nov., Mün­chen
   
• P. Krummrich, A. Mayer, G. Fischer, "Noise penalty caused by stimulated Raman scattering in bidirectional DWDM transmission", Conference on Optical Amplifiers and their Applications (OAA 1999), Nara, Japan, ThB3, pp. 102 ? 105
   
• P. Krummrich, E. Gottwald, A. Mayer, C.-J. Weiske, G. Fischer, "Influence of stimulated Raman scattering on the channel power balance in bidirectional WDM transmission", Optical Fiber Com­mu­ni­ca­tion Conference (OFC 1999), Feb. 21 ? 26, San Diego, CA, WJ6, pp. 171 ? 173

1996:

• C. Cremer, U. Gaubatz, P. Krummrich, "4 x 10 Gbit/s WDM transmission with remote post and preamplifiers", 22nd European Conference on Optical Com­mu­ni­ca­tion (ECOC 1996), Oslo, Norway, Sept. 15 ? 19, Vol. 2, TuD.1.6, pp. 155 ? 158
   
• C. Cremer, U. Gaubatz, P. Krummrich, "4 x 10 Gbit/s WDM transmission with remote post and preamplifiers", Electronics Letters (1996), Vol. 32, No. 12, June 6th, pp. 1116 ? 1118

1995:

• P. Krummrich, "Praseodym-dotierte Faserverstärker für den Wellenlängenbereich um 1,3 µm", Dissertation, Fa­kul­tät für Ma­schi­nen­bau und Elek­tro­tech­nik der Technischen Uni­ver­si­tät Braunschweig (1995)
   
• P. Krummrich, "Optimization of Pr3+-Doped Fiber Amplifier Design for Different Pump Wavelengths", Optics Com­mu­ni­ca­tions (1995), Vol. 114, pp. 453 ? 457
   
• P. Krummrich, "Experimental Determination of the Emission Cross-Section Spectrum of the Pump Transition of Praseodymium", IEEE Photonics Technology Letters (1995), Vol. 7, No. 1, pp. 62 ? 64

1994:

• P. Krummrich, "Aspects of Pump Wavelength Selection for Pr3+-Doped Fiber Amplifiers", Technical Digest of the Conference on Optical Amplifiers and their Applications (1994), Breckenridge, CO, USA, Aug. 3 - 5, Vor­trag WC2, pp. 22 ? 24
   
• P. Krummrich, "Noise Figure Dependence of Pr3+-Doped Fiber Amplifiers on Input Signal Power", Proceedings of the Conference on European Fibre Optic Com­mu­ni­ca­tions and Networks (1994), Heidelberg, Deutsch­land, 21. - 24. Juni, Poster P3, pp. 175 ? 178
   
• P. Krummrich, "Theoretical Comparison of Pump Configurations for Pr3+-Doped Fiber Amplifiers", Frequenz (1994), Bd. 48, Nr. 11/12, pp. 279 ? 283

1993:

• P. Krummrich, "Prospects of Pumping Pr3+-Doped Fiber Amplifiers at 980 nm", Frequenz (1993), Bd. 47, Nr. 9/10, pp. 256 ? 260
   
• H. Grebel, M. Jimenez, P. Krummrich, "Conditional artificial dielectrics: optically con­trolled micro-strip structures", Proceedings of the SPIE (1993), Vol. 1794, pp. 499 ? 503