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  2. Synchronous optical networking - Wikipedia

    en.wikipedia.org/wiki/Synchronous_optical_networking

    Where fiber exhaustion is a concern, multiple SONET signals can be transported over multiple wavelengths on a single fiber pair by means of wavelength-division multiplexing, including dense wavelength-division multiplexing (DWDM) and coarse wavelength-division multiplexing (CWDM).

  3. Wavelength-division multiplexing - Wikipedia

    en.wikipedia.org/wiki/Wavelength-division...

    Dense wavelength-division multiplexing (DWDM) refers originally to optical signals multiplexed within the 1550 nm band so as to leverage the capabilities (and cost) of erbium-doped fiber amplifiers (EDFAs), which are effective for wavelengths between approximately 1525–1565 nm , or 1570–1610 nm .

  4. Optical transport network - Wikipedia

    en.wikipedia.org/wiki/Optical_transport_network

    OTN multiplexing and mapping structures. Show the relationship between ODU Clients, ODU, ODU-Groups and OTU. OTN was designed to provide higher throughput (currently 400G) than its predecessor SONET/SDH, which stops at 40 Gbit/s, per channel.

  5. Optical networking - Wikipedia

    en.wikipedia.org/wiki/Optical_networking

    Optical networking is a means of communication that uses signals encoded in light to transmit information in various types of telecommunications networks.These include limited range local-area networks (LAN) or wide area networks (WANs), which cross metropolitan and regional areas as well as long-distance national, international and transoceanic networks.

  6. Subnetwork connection protection - Wikipedia

    en.wikipedia.org/wiki/Subnetwork_Connection...

    The selector switches traffic on the standby route when the active route between node A and node B is failed. In order to prevent any unnecessary or spurious protection switching in the presence of bit errors on both paths, a switch will typically occur when the quality of the alternate path exceeds that of the current working path by some ...

  7. Optical Carrier transmission rates - Wikipedia

    en.wikipedia.org/wiki/Optical_Carrier...

    OC-768 SONET interfaces have been available with short-reach optical interfaces from Cisco since 2006. Infinera made a field trial demonstration data transmission on a live production network involving the service transmission of a 40 Gbit/s OC-768/STM-256 service over a 1,969 km terrestrial network spanning Europe and the U.S.

  8. G.709 - Wikipedia

    en.wikipedia.org/wiki/G.709

    ITU-T Recommendation G.709 Interfaces for the Optical Transport Network (OTN) describes a means of communicating data over an optical network. [1] It is a standardized method for transparent transport of services over optical wavelengths in DWDM systems.

  9. Optical mesh network - Wikipedia

    en.wikipedia.org/wiki/Optical_mesh_network

    Technological advancements in optical transport switches [10] in the first decade of the 21st century, along with continuous deployment of dense wavelength-division multiplexing (DWDM) systems, have led telecommunications service providers to replace their SONET ring architectures by mesh-based architectures for new traffic. The new optical ...