Amitié Transatlantic Cable Spectral Efficiency Upgrade
Sector: Telecommunications • Location: Lynn and Bordeaux, Massachusetts and Nouvelle-Aquitaine, United States and France
Source: SubTel Forum
Alcatel Submarine Networks (ASN) completed a field trial on the Amitié transatlantic cable using SMAT3 coherent technology, achieving a record spectral efficiency of 7.52 bit/s/Hz and 6.17 bit/s/Hz for usable ethernet payload. The trial used an 800G line rate single carrier over live traffic with 400GE clients, providing a capacity of 24 Tb/s per fiber pair with operational margin. The trial was c
- Status
- Closed
- Sector
- Telecommunications
- Location
- Lynn and Bordeaux, Massachusetts and Nouvelle-Aquitaine, United States of America
- Updated
- 22 Jul 2026
- Source
- SubTel Forum
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Project Information
Participants
Company |
Status
Original status | completed |
Taiyo status | Closed |
Taiyo last update | 2026-07-22 |
Contact
| Not available for this record. |
Description
Description | Alcatel Submarine Networks (ASN) completed a field trial on the Amitié transatlantic cable using SMAT3 coherent technology, achieving a record spectral efficiency of 7.52 bit/s/Hz and 6.17 bit/s/Hz for usable ethernet payload. The trial used an 800G line rate single carrier over live traffic with 400GE clients, providing a capacity of 24 Tb/s per fiber pair with operational margin. The trial was conducted over a 6,234 km distance between Lynn, US, and Bordeaux, France, with spectrum provided by Vodafone. ASN's SMAT3 transponder technology operates at 130 Gbaud and supports capacities up to 1.2 Tb/s per wavelength. |
Original sector | Telecommunications |
Location
Country | United States of America (USA) |
State | Massachusetts and Nouvelle-Aquitaine |
City | Lynn and Bordeaux |
Source
Source | SubTel Forum |
URL |
More Details
Record type | Project |
Article published date | 2025-09-16 |
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