Bidirectional repeaterless transmission of 8×10 GE over 210 km of standard single mode fibre

Karásek, M.; Vojtěch, Josef; Radil, Jan

doi:10.1049/iet-opt:20060060

Cited by 5 publications

(1 citation statement)

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“…Commercially available optical amplifiers for long distance transmissions are not bidirectional. There have been many proposals for optical amplification of bidirectional fiber links including repeaterless approaches -pre and post amplifying the optical signals at transmitters and receivers, respectively, instead of adding a bidirectional optical amplifier at the middle of the transmission path [22]- [25], and repeated approaches -adding bidirectional optical amplifiers in the path [26]- [30]. Surely, using bidirectional optical amplifiers will allow the networks to have a larger coverage.…”

Section: A Principle and System Requirementsmentioning

confidence: 99%

On Wavelength-Routed Networks With Reversible Wavelength Channels

Wai

Li³

2013

J. Lightwave Technol.

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We observe that the performance of wavelengthrouted (WR) networks often suffers from asymmetric traffic and network traffic patterns differing from the original design plans. WR networks with a fixed number of channels in a given transmission direction are inflexible. Therefore, we propose reversible wavelength channels. Like a reversible lane in highway systems, a reversible wavelength channel has the flexibility of its transmission direction being configurable at the setup of a lightpath. So far reversible wavelength channels have not been discussed in WR networks even though we observe that most of the required technologies are already available. In this paper, we discuss all the required technologies for implementing reversible wavelength channels in WR networks. We demonstrate that reversible wavelength channel can provide significant performance improvement for WR networks when the traffic is asymmetric. Even if the traffic is symmetric, we also have nontrivial performance improvement with reversible wavelength channels, i.e., the blocking performance of WR networks with reversible wavelength channels will be similar to that of normal WR networks with doubling the number of fibers per link. Different implementation approaches for reversible wavelength channels are discussed. Among them, the performance of the reversible waveband approach is discussed in detail.Index Terms-Lightpath, reversible waveband, reversible wavelength channel, wavelength-routed networks.

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