Submarine Line Terminal Equipment (SLTE)

Submarine cables are the backbone of global connectivity. SLTE is the cornerstone of the data highway that transport vast amounts of data on these cables.

Recognized as the platform with high integration level in the industry

The SLTE products provided by Huawei Marine deliver reliable, high performance, large-capacity optical transmission across the vast reaches of submarine cable networks by leveraging industry-leading DWDM technology.

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Key Features:

  • Supports up to 25.6 Tbit/s cross-connect capacity
  • Supports digital line segment lengths of up to 16,000 km, on repeatered systems, or 671 km, on unrepeatered systems
  • Supports coherent line rates of 100G, 200G, 400G, and 1T
  • Supports Flexgrid WSS (37.5GHz /43.75GHz /50GHz /62.5GHz /75GHz)
  • Supports encapsulation of VC, ODUk, and packet services
  • Provides multiple network-level protection schemes and intelligent network management to ensure Tier-1 reliability
  • Universal platform for submarine and terrestrial networks

Key Technology

oDSP designed in-house

Supporting high performance SDFEC and large dispersion compensation


PDM-BPSK, PDM-QPSK, 8QAM, 16QAM, improve non-linear mitigation


ROPA, HBA, Raman, enhanced-Raman


WSS-based multi-degree ROADM

Control plan


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