Zobrazeno 1 - 10
of 79
pro vyhledávání: '"C. Schulien"'
Publikováno v:
Optical Fiber Technology. 17:456-463
Application specific integrated circuits are considered as one essential building block for high speed digital transceivers. We review ASIC requirements and discuss architectural design limitations and implementation optimization options, both driven
Autor:
Young-Kai Chen, George E. Georgiou, Mario Reinhold, Rajasekhar Pullela, P. Paschke, A.H. Gnauck, C. Gropper, Yves Baeyens, T.W. von Mohrenfels, J.-P. Mattia, C. Schulien, Claus Dorschky
Publikováno v:
IEEE Journal of Solid-State Circuits. 2:1120-1125
The integrated clock and data recovery (CDR) circuit is a key element for broad-band optical communication systems at 40 Gb/s. We report a 40-Gb/s CDR fabricated in indium-phosphide heterojunction bipolar transistor (InP HBT) technology using a robus
Autor:
Theodor Kupfer, Stefan Langenbach, C. Schulien, Norbert Beck, C.R.S. Fludger, Andreas Bisplinghoff
Publikováno v:
2014 The European Conference on Optical Communication (ECOC).
Publikováno v:
IEEE Photonics Technology Letters. 21:1568-1570
In this letter, we present a novel approach to measure the Lorentzian linewidth of a laser source. The approach is based on a heterodyne detection scheme, such as may be implemented in a coherent optical receiver for data communications, using both i
Autor:
E.-D. Schmidt, Bernhard Spinnler, J. C. Geyer, C. Schulien, C.R.S. Fludger, Berthold Lankl, D. van den Borne, Fabian N. Hauske, T. Duthel, Bernhard Schmauss, M. Kuschnerov, K. Piyawanno, H. de Waardt
Publikováno v:
IEEE Photonics Technology Letters, 20(10), 776-778. Institute of Electrical and Electronics Engineers
—Arobust in-service estimation of fiber channel parameters from equalizer parameters of a polarization diverse coherent receiver is presented. The equations used for estimation are evolved from a theoretical fiber channel model. The theory is valid
Autor:
Theodor Kupfer, T. Duthel, C.R.S. Fludger, R. Pastorelli, C. Schulien, Jonas Geyer, Alberto Della Torre, Fabrizio Forghieri, Stefano Piciaccia, J. Schiessl, Soeren Gehrke, P. Presslein
Publikováno v:
National Fiber Optic Engineers Conference.
We have demonstrated the DWDM transmission of 70 100Gb/s channels using CP-DQPSK and coherent detection with real-time DSP and FEC. The channel selection was performed with the coherent receiver only, without using any optical demultiplexing.
Simple automatic nonlinear compensation with low complexity for implementation in coherent receivers
Publikováno v:
36th European Conference and Exhibition on Optical Communication.
We analyze digital nonlinearity compensation. Due to complexity restrictions in real-time applications we propose a simplified compensator with an automatic control scheme and evaluate its performance with simulations on two different dispersion maps
Publikováno v:
36th European Conference and Exhibition on Optical Communication.
Publikováno v:
Advanced Photonics & Renewable Energy.
We show the measurement results from a 43Gb/s CP-QPSK transponder, and discuss the challenges in the realisation of efficient designs for 112Gb/s transmission.
Publikováno v:
Optical Fiber Communication Conference.
We review real-time and off-line processing techniques for the proto-typing of a digital coherent receiver.