Thursday, 22 September, 2011
09:00 -- 10:45
Room A

Th.11.A • Multicarrier Subsystems

Chair: John Cartledge; Queen’s University, Canada
 
Th.11.A.1 • 09:00
STUDY OF MULTICARRIER OFFSET-QAM FOR SPECTRALLY EFFICIENT COHERENT OPTICAL COMMUNICATIONS
Sebastian Randel1, Alberto Sierra1, Xiang Liu1, Sethumadhavan Chandrasekhar1, Peter Winzer1; 1Bell Laboratories, Alcatel-Lucent, USA.
Multicarrier Offset-QAM is proposed as a spectrally efficient scheme for high-speed coherent optical communication systems. Low penalties are found with symbol-rate spacing in a back-to-back experiment. The scheme can be implemented with low complexity.
 
Th.11.A.2 • 09:15
PERFORMANCE OF 112GBIT/S RF-ASSISTED MULTI-CARRIER DP-16-QAM IN A TRANSPARENT OPTICAL DOMAIN
Gianmarco Bruno1, Anna Lidia Soso1, Bengt-Erik Olsson2, Jeroen Nijhof1; 1Ericsson, Italy; 2Ericsson, Sweden.
We investigate the tolerance to narrowband filtering and nonlinear propagation of 112Gbit/s and its suitability to a 50GHz DWDM system. This format is a potential alternative to more complex modulation formats for optical meshed networks.
 
Th.11.A.3 • 09:30
112 GBIT/S RF ASSISTED DUAL CARRIER DP-16-QAM TRANSMITTER USING OPTICAL PHASE MODULATOR
Bengt-Erik Olsson1, Anders Djupsjöbacka2, Jonas Mårtensson2, Arne Alping1; 1Ericsson AB, Sweden; 2Acreo AB, Sweden.
An RF assisted 112 Gbit/s transmitter based on optical phase modulation is presented. The system uses two closely spaced sub-channels that are evaluated after 824 km transmission.
 
Th.11.A.4 • 09:45 (Tutorial)
IMPLEMENTATION OF MULTI-CARRIER TRANSMISSION SYSTEMS WITH COHERENT DETECTION
Maurice O'Sullivan1; 1Ciena, Canada.
The recent realization of high rate conversion between analog and digital domains together with the development of methods and technologies for linear transduction between electrical and optical domains has spurred a rapidly growing effort to exploit the capacity of optical fiber with transceivers enabled by digital signal processing and coherent detection. I will describe implemented multi-carrier transmission systems based on coherent detection as well as some of the enabling technologies with deployed examples. I will briefly explore some of the distinctions between these and conventional systems in practical deployments and give a view of engendered opportunities.

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