| 摘要 |
Disclosed is a redundant TTE optical transmission system architecture which eliminates system signal power loss due to protection elements and thus provides a system power budget comparable to non-redundant TTE systems. Further disclosed is a virtually non-failing optical amplifier (3a), for redundant and non-redundant optical systems, which allows for the simultaneous exploitation of the pump power from both sets of laser pumps (50) in a dual-pump configuration, thereby increasing the available system power margin.
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