Topic
Optical Transport Network
About: Optical Transport Network is a research topic. Over the lifetime, 6055 publications have been published within this topic receiving 85783 citations.
Papers published on a yearly basis
Papers
More filters
NEC1
TL;DR: This work describes key technological components (including flexible nonuniform wavebands) of hybrid hierarchical optical cross-connects and discusses their performance/cost implications.
Abstract: Hybrid hierarchical optical cross-connects enhance the performance/cost ratio of optical networks by providing transparent (optical) switching of sets of wavelengths (wavebands) in addition to opaque (electrical) switching of individual wavelengths. As network bandwidth gets cheaper, and the performance bottleneck moves to switching nodes, these systems provide an attractive scalable solution for next-generation optical networks. We describe key technological components (including flexible nonuniform wavebands) of hybrid hierarchical optical cross-connects and discuss their performance/cost implications.
63 citations
TL;DR: A dual-field encryption scheme of an orthogonal frequency division multiplexing passive optical network (OFDM-PON) is proposed based on analog-digital hybrid chaotic system that circumvents the security vulnerabilities of both analog and digital chaos.
Abstract: A dual-field encryption scheme of an orthogonal frequency division multiplexing passive optical network (OFDM-PON) is proposed based on analog–digital hybrid chaotic system. In our scheme, the downstream data are encrypted in optical field, and the upstream data are encrypted in electrical field. The hybrid chaotic system circumvents the security vulnerabilities of both analog and digital chaos, e.g., the periodicity of digital chaos is masked by the analog one, and the time delay signature of the analog system is concealed by injecting digital chaos. Meanwhile, the key space dimension of the system is enlarged. Simulation results show both the feasibility and security of the proposed OFDM-PON system.
62 citations
09 Jun 2013
TL;DR: This work considers an OOFDM-based optical network and forms a virtual network mapping problem for both static and dynamic traffic, with the objective to maximize the subcarrier utilization, while minimizing the blocking ratio is the aim for dynamic traffic.
Abstract: Virtualization improves the efficiency of networks by allowing multiple virtual networks to share a single physical network's resources. Next-generation optical transport networks are expected to support virtualization by accommodating multiple virtual networks with different topologies and bit rate requirements. Meanwhile, Optical Orthogonal Frequency-Division Multiplexing (OOFDM) is emerging as a viable technique for efficiently using the optical fiber's bandwidth in an elastic manner. OOFDM partitions the fiber's bandwidth into hundreds or even thousands of OFDM subcarriers that may be allocated to services. In this paper, we consider an OOFDM-based optical network and formulate a virtual network mapping problem for both static and dynamic traffic. This problem has several natural applications, such as e-Science, Grid, and cloud computing. The objective for static traffic is to maximize the subcarrier utilization, while minimizing the blocking ratio is the aim for dynamic traffic. Two heuristics are proposed and compared. Simulation results are presented to demonstrate the effectiveness of the proposed approaches.
62 citations
TL;DR: A brief overview of optical signal processing in high-speed optical systems and networks highlights a few key network functionalities, including optical logic operations, reconfigurable add/drop multiplexing, optical regeneration, wavelength conversion, format conversion, and phase-sensitive amplification.
Abstract: With high-bandwidth and on-demand applications continuing to emerge, next-generation core optical networks will likely require significant improvements in reconfigurability and ultra-fast operations Optical signal processing overcomes the electronic bandwidth limitations with the advantages in terms of transparency and scalability We review recent progresses in all-optical signal processing potentially for ultrahigh speed systems and networks Starting from a brief overview of optical signal processing in high-speed optical systems and networks, we highlight a few key network functionalities, including optical logic operations, reconfigurable add/drop multiplexing, optical regeneration, wavelength conversion, format conversion, and phase-sensitive amplification Different techniques are investigated and discussed, employing a wide range of devices and various nonlinearities Some of experimental results are presented in both single polarization systems and polarization-division multiplexing systems
62 citations
TL;DR: In this article, an experimental demonstration of a variable-integer delay line optical time-division multiple access coder with fast reconfiguration time is presented for 64 100-Mb/s channels, using 2*2 integrated-optic directional couplers and fiber delay lines.
Abstract: An experimental demonstration of a variable-integer delay line optical time-division multiple-access coder with fast reconfiguration time is presented for 64 100-Mb/s channels, using 2*2 integrated-optic directional couplers and fiber delay lines. A simple control sequence for setting the state of the coder is presented. The 26-dB insertion loss of the experimental coder described would reduce the potential size of the network by a factor of 400, which is clearly unacceptable. The coder insertion loss is reduced by integrating all of the stages together on a single substrate, including the directional couplers and the waveguide delays. In this way, the implementation of an optical time-division multiaccess coder capable of addressing 1000 1-Gb/s channels with subnanosecond reconfiguration time may be feasible. >
62 citations