T
T. Duthel
Researcher at Cisco Systems, Inc.
Publications - 47
Citations - 1105
T. Duthel is an academic researcher from Cisco Systems, Inc.. The author has contributed to research in topics: Optical performance monitoring & Signal processing. The author has an hindex of 13, co-authored 44 publications receiving 1015 citations.
Papers
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Journal ArticleDOI
Coherent Equalization and POLMUX-RZ-DQPSK for Robust 100-GE Transmission
C.R.S. Fludger,T. Duthel,D. van den Borne,C. Schulien,E.-D. Schmidt,T. Wuth,J. C. Geyer,E. de Man,Khoe Giok-Djan,H. de Waardt +9 more
TL;DR: In this paper, the use of a coherent digital receiver for compensation of linear transmission impairments and polarization demultiplexing in a transmission system compatible with a future 100-Gb/s Ethernet standard is discussed.
Proceedings Article
10 x 111 Gbit/s 50 GHz spaced, POLMUX-RZ-DQPSK transmission over 2375 km employing coherent equalisation
C.R.S. Fludger,T. Duthel,D. van den Borne,C. Schulien,E.-D. Schmidt,T. Wuth,E. de Man,GD Giok-Djan Khoe,H. de Waardt +8 more
TL;DR: In this paper, the authors demonstrate spectrally efficient (2.0 b/s/Hz) transmission of 10 x 111 Gbit/s polarisation multiplexed 27.75 Gbaud RZ-DQPSK over 2375km of SSMF and 5 add-drop nodes.
Proceedings ArticleDOI
Impact of Polarisation Dependent Loss on Coherent POLMUX-NRZ-DQPSK
TL;DR: In this article, the effect of PDL on the performance of a DQPSK signal was investigated and it was shown that the orientation of the PDL element has a major impact on the OSNR performance.
Journal ArticleDOI
Point-to-Multipoint Optical Networks Using Coherent Digital Subcarriers
Dave Welch,Antonio Napoli,J. Back,Warren Sande,Joao Pedro,Fady Masoud,Chris Fludger,T. Duthel,Han Sun,Steven Joseph Hand,Ting-Kuang Chiang,Aaron Chase,Atul Mathur,Tobias A. Eriksson,Mats Plantare,Magnus Olson,Stefan Voll,Kuang-Tsan Wu +17 more
TL;DR: In this article, the authors proposed a point-to-multipoint architecture based on digital subcarrier multiplexing (DQMCM) to enable interoperability across a variety of transceivers operating at different speeds.
Journal ArticleDOI
Laser Linewidth Estimation by Means of Coherent Detection
TL;DR: In this article, the authors present a novel approach to measure the Lorentzian linewidth of a laser source based on a heterodyne detection scheme, such as may be implemented in a coherent optical receiver for data communications, using both in-phase and quadrature information of the optical field.