Huawei NetEngine 8000 F

Inspecting Optical Fiber Connectors
The Ethernet port rate is increasing and the quality requirement for optical bers
and optical cables is higher. Table 3-87 describes requirements for the loss of
optical ber connectors according to the national standard (GBT50312-2016).
Table 3-87 Maximum attenuation of the optical
ber connector
Type Maximum attenuation of an optical ber
connector (dB)
Fiber splicing connector 0.3
Optical mechanical connector 0.3
Optical connector 0.75
NO TE
Fiber cores are connected through connectors, such as the ODF, optical attenuator, and
ange, in splicing and mechanical modes.
Table 3-88 describes requirements for the reection of the optical ber connector
when Ethernet ports (such as 200G and 50G) use PAM4 encoding to double the
rate. More connectors bring lower requirements for the
reection.
Table 3-88 Maximum reection of connectors
Number of Optical Fiber
Connectors
Maximum Reection of Each Connector
(dB)
1 -22
2 -29
4 -33
6 -35
8 -37
10 -39
Link splice loss and
reectance values of the test methods and the following
processing steps:
1. After the optical ber at the peer end is disconnected, use the OTDR meter to
test the local end. Check whether the loss and reection of each link and
node are normal. (The loss of a
ber splicing connector should be less than
0.3 dB, the loss of a connector should be less than 0.75 dB, and the reection
of a connector should be less than -30 dB.) If the test result is not within the
required range, process the abnormal port.
HUAWEI NetEngine 8000 F
Hardware Guide 3 Hardware Description
Issue 05 (2023-03-31) Copyright © Huawei Technologies Co., Ltd. 113