Evolution of optical transport technologies: from SONET/SDH to WDM

@article{Cavendish2000EvolutionOO,
  title={Evolution of optical transport technologies: from SONET/SDH to WDM},
  author={D. Cavendish},
  journal={IEEE Commun. Mag.},
  year={2000},
  volume={38},
  pages={164-172}
}
It took roughly 10 years for the transport network industry to migrate from PDH to SONET. As this technology swap comes to an end, WDM technology is dawning, promising to revolutionize the network industry, with the possibility of transport bit rates above 10 Gb/s as well as transparency to signal encodings. However, a new wave of equipment upgrade is unlikely to happen as current SONET equipment is just beginning to pay off for its large investment. Thus, in years to come, SONET technology… Expand
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