Huawei Transport Network

Boards Supporting Only U1CTU or S1CTU in OptiX OSN 9800 U Series Subracks

This section describes the boards that support only the U1CTU or S1CTU. NOTE: The compatibility with U1CTU/S1CTU boards in OptiX OSN 9800 U series subracks is no longer applicable to OptiX OSN 9800 V100R020C10 and later versions. The compatibility with U1CTU/S1CTU boards in OptiX OSN 9800 U series subracks is continuously evolving in the...

Overview of System Control and Communication Boards in OptiX OSN 9800 U Series Subracks

A system control and communication board interoperates with the NMS to manage boards and achieve communication between NEs. It supports NE data backup, intra-subrack configuration management, and alarm output.   Mapping Between CTU Boards and Subracks Board Description OSN 9800 U64 Standard Subrack OSN 9800 U64 Enhanced Subrack OSN 9800 U32 Standard Subrack OSN 9800 U32 Enhanced...

EDFA vs Raman amplifier

Hello, everyone! Today, I want to explain the difference between EDFA and Raman optical amplifiers. Long optical links require amplification of the signal. There are two types of amplifiers - EDFA and Raman. The question is what are the differences between these two amplifiers? And which amplifier should be applied? It...

Erbium-doped fiber amplifier(EDFA)

Hello, everyone! This post is dedicated to the Erbium-doped fiber amplifier(EDFA). I hope you're interested.   Working Principles of EDFAs Erbium-doped fibers are the key components of EDFAs and contain Er3+ ions of a certain concentration. Before illustrating the working principle of EDFAs, this course introduces the energy level diagram of erbium ions....