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| The MF-1280GWS family of products comprises a set of dense wavelength division multiplexing (DWDM) optical network elements for global submarine cable networks, providing up to 128 channels over a single fiber pair. This enables a single fiber to carry up to 1280Gb/s of data, making possible a capacity of up to 15Tb/s on a 12 fiber-pair cable. |
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The MF-1280GWS DRY PLANT family of products forms a complete and highly-flexible submarine optical transmission system capable of supporting data rates from 10Gb/s to 1.28Tb/s per fiber-pair. Its primary elements include the Line Terminating Units (LTU), the Wavelength Terminating Units (WTU) and the Maintenance Controller (MC).
A Redundant Line Terminating Unit (RLTU) and Photonic Cross-Connect (PXC) are also available as options. Terrestrial terminations are at SDH STM-64 or STM-16, or at OC-192 or OC-48 of SONET, or 10GbE. |
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| The 16WDM Line Terminating Unit Features : |
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| SLTE: |
Submarine Line Terminating Equipment |
| LTU: |
Line Terminating Unit |
| WTU: |
Wavelength Terminating Unit |
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| RLTU: |
Redundant Line Terminating Unit (optional) |
| MC: |
MC: Maintenance Controller |
| CIT: |
Craft Interface Terminal |
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A high density of 16 wavelengths per LTU bay |
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Exceptional BER performance using Ultra FEC |
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Field-proven, high-reliability components |
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Laser Diodes Tunable across multiple wavelengths |
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Effortless installation and maintenance with automatic optimization for In-Service Upgrades & Card Replacement |
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PC-based Craft Interface Terminal for channel-level OA&M |
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WS-based Maintenance Controller for station-level SLTE OA&M |
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High density bay for up to 64 WDM systems |
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Integrated EQU Shelf for Dispersion Compensation |
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Line Monitor Interface cards integrated into WTU |
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Highly-reliable EDFAs using redundant pump LD technology |
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Remote-controlled EDFAs for easy operation |
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Straightforward operation via GUI-based Craft Interface Terminal (CIT) |
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Unique spectrum balancing system for safe, effortless capacity upgrades |
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The primary control point for the submarine cable system is the computer-based Maintenance Controller (MC). This enables monitoring and control of DRY PLANT such as LTUs and WTUs.
The MC provides a graphics-based display of the state of the system, and is able to display all equipment and system states and alarms, and also signal parameters such as wavelengths, levels and any transmission impairments.
The MC is intended for continuous system monitoring, and is based on a high-reliability work station.
The primary maintenance tool is the computer-based Craft Interface Terminal (CIT). This provides the same monitor and control facilities as the MC, plus equipment-level parameter adjustments.
The CIT is intended for in-station use, and is based on a low-cost industry-standard laptop computer.
Both the MC and the CIT connect to the SLTE via an in-station LAN and associated WAN.
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For exceptionally-high availability, the SLTE can also include optional Redundant Line Terminal Units (RLTU). With typically one RLTU per 16 LTUs, it provides switched equipment protection on a 1:16 basis, conforming to ITU-T G.841. An RLTU operates on its own additional wavelength in the system, so if an LTU in a cable segment needs to be restored, the corresponding LTU at the far end of the segment is also replaced by its RLTU to provide RLTU-to-RLTU linking across the segment.
The optical switching for the RLTU function is provided by Mitsubishi Electric's Photonic Cross-Connect. |
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| Mitsubishi Electric's state-of-the-art Photonic Cross-Connect can provide a submarine network with optical level traffic protection and wavelength grooming. |
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PXC replaces any existing NPE and/or DXC |
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PXC provides a whole range of protection and restoration functionalities |
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Easy upgrade from RLTU to PXC by replacing the Nx1 optical switches with 1+1 redundant NxN switch matrices |
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