Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Hacene Chaouch"'
Autor:
Mark Filer, Hacene Chaouch
Publikováno v:
Journal of Lightwave Technology. 36:372-376
We review key aspects of analog coherent optics adoption in long haul datacenter regional networks. We discuss the main advantages and drawbacks of this approach and present potential improvements for next generation 60 + Gbaud long haul analog 8/16Q
Autor:
Daniel Fritzsche, Hacene Chaouch, Sönke Rosner, Yuriy Babenko, Erich Gottwald, P. Wagner, Erik Weis, Harald Rohde
Publikováno v:
Journal of Lightwave Technology. 33:1644-1649
Transmission capabilities of a coherent real-time UDWDM PON over deployed fibers in two testbeds (Berlin and Darmstadt, Germany) are demonstrated. Extensive coexistence tests including LTE backhauling and GPON, RF-Video, 100G and OTDR were performed.
Autor:
Hacene Chaouch, Mark Filer
Publikováno v:
OFC
150G 8QAM and 200G 16QAM signals, residing on a layer-2/3 modular switch card with integrated coherent optics, are sent over a fully-loaded, flexible-grid open line system with 104 co-propagating 37.5 GHz channels.
Publikováno v:
OFC
Arista, Cisco, and Juniper's layer-2/3 modular switches with integrated coherent optics are interoperated over 2000 km at 150G 8QAM and 1000 km at 200G 16QAM on Microsoft's open line system.
Publikováno v:
OFC
We discuss the key metrics of analog coherent interfaces for today's 200G 16QAM and future 400–600G 64QAM pluggable systems. A cloud service provider perspective on next generation DCI requirements is also discussed.
Publikováno v:
OFC
Nyquist PM-QPSK signals are sent over 4000 km of fiber through an open line system employing colorless flex-grid ROADMs. The signal source is a layer 2/3 modular switch with embedded coherent ASICs and CFP2-ACO optics.
Autor:
Hacene Chaouch, Werner Weiershausen, T. von Lerber, E. Parsons, Franko Küppers, Seppo Honkanen, Marco Mattila, Alan E. Willner, Jeng-Yuan Yang, Ari Tervonen
Publikováno v:
Optics Communications. 284:2576-2580
We demonstrate three novel all-optical signal processing methods for RZ-DPSK signals using a saturated SOA. The two logically opposite pulse streams from a demodulated noisy RZ-DPSK signal counter-propagate in the SOA. This configuration decreases th
Autor:
Hacene Chaouch, Werner Weiershausen, K.-F. Klein, S. Vorbeck, M. Schneiders, C. Gonschior, Franko Küppers
Publikováno v:
Optics Communications. 283:2333-2338
The performance of various modulation schemes for 100 Gbit/s single-channel serial transmission is investigated by means of numerical simulations. Different ASK and PSK modulation formats are compared in terms of total system reach for a 10 −9 BER
Publikováno v:
Journal of Optical Communications and Networking. 10:A216
Optical line-side interoperability is a critical component for enabling cloud service providers to deploy capacity at scale with a diverse supply chain. Historically, vendor-locked line systems and proprietary coherent digital signal processing (DSP)
The bit pattern effect on all-optical clock recovery using tank circuits and birefringent resonators
Publikováno v:
Optics Communications. 282:4693-4698
In this paper we discuss the bit pattern effect on optical clock signals recovered using tank circuits and using birefringent resonators. For the first time we compare the bit pattern dependence of the clock signals recovered from both schemes. We sh