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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.


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01 Jan 2006
TL;DR: This document describes the technology- specific information needed to extend GMPLS signaling to control Optical Transport Networks (OTN); it also includes the so-called pre- OTN developments.
Abstract: This document is a companion to the Generalized Multi-Protocol Label Switching (GMPLS) signaling documents. It describes the technology- specific information needed to extend GMPLS signaling to control Optical Transport Networks (OTN); it also includes the so-called pre- OTN developments. [STANDARDS-TRACK]

58 citations

Proceedings ArticleDOI
19 Oct 2003
TL;DR: This paper proposes a methodology for minimizing the disruption time and the number of disruptions in the network during connection rerouting, and it is critical that the connections have minimal disruption times during network reconfiguration.
Abstract: Optical networks employing wavelength division multiplexing can carry huge volumes of traffic, hence maintaining a high level of service availability is important. This makes fault tolerance an important issue. In general the failed connections need to be rerouted. After a link or node failure, alternate paths for restoration of the failed connections may exist only if the network is reconfigured. In addition to link or node failure scenarios, connection rerouting or network reconfiguration may also prove helpful for accommodating new requests which may otherwise be blocked. Since connections on backbone optical networks, have longer call durations, it is crucial to accommodate new blocked requests through alternate means, instead of blocking them till existing connections terminate and make a path available. These situations make network reconfiguration important. Since most connections plying on todays backbone networks are high data rate connections, it is critical that the connections have minimal disruption times during network reconfiguration. In this paper, we propose a methodology for minimizing the disruption time and the number of disruptions in the network during connection rerouting.

58 citations

Journal ArticleDOI
TL;DR: Digital signal processing technologies to further enhance NG-PON2 systems by realizing flexible and cost-effective optical access network deployments are reviewed.
Abstract: Motivated by recent progress in next-generation PON2, or NG-PON2, standardization, this article reviews digital signal processing technologies to further enhance NG-PON2 systems by realizing flexible and cost-effective optical access network deployments. First, flexible speed upgrades by DSP-enabled advanced modulation and multiplexing approaches are described, followed by a consideration of cost-performance trade-offs. Next, reach extension using DSP-based digital coherent reception and impairment compensation is overviewed. Finally, as a future goal, access network virtualization with reconfigurable optical line terminals and optical network units is discussed.

58 citations

Journal IssueDOI
TL;DR: In this paper, the optical OFDM architectures are reviewed, and their performance under various system conditions are compared and compared with alternative technologies, and the challenges in the implementation of optical ONDM are also discussed.
Abstract: Orthogonal frequency division multiplexing (OFDM) is a widely used modulation/multiplexing technology in wireless and data communications. Leveraging recent advances in high-speed complementary metal-oxide semiconductor (CMOS) technologies and optical modulation and detection technologies, optical OFDM at a 40Gb/s or even a 100Gb/s information rate becomes feasible. At the optical transmitter, OFDM is realized by a digital signal processor (DSP) using inverse fast Fourier transformation (iFFT) with subsequent digital-to-analog conversion and Cartesian electro-optic modulation. At the receiver, the signal optical field is first reconstructed, e.g., by coherent detection. Then reverse signal processing is applied to recover the original data. OFDM enables efficient compensation of transmission effects such as chromatic dispersion and polarization mode dispersion that often are prohibiting impairments to cost-effective realization of high-speed optical transport systems. In light of the emerging demand for a 100+ Gb/s data rate in future optical transport systems, optical OFDM is considered to be a promising enabling technology. In this paper, the optical OFDM architectures will be reviewed, and their performance under various system conditions will be discussed and compared with alternative technologies. The challenges in the implementation of optical OFDM will also be discussed.

58 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202313
202237
202132
202060
201998
201884