Hello everyone!
This post will share with you about optical modules of Huawei SDH devices(The pluggable optical module of the OpiX OSN equipment).
Certain boards on the OptiX OSN equipment supports the small form-factor pluggable (SFP), enhanced small form-factor pluggable (eSFP), 10 Gigabit small form-factor pluggable (XFP) optical modules. When you need to adjust the type of accessed services or replace such a faulty optical module, you just need to directly replace the pluggable optical module without replacing its board.
Overview
The pluggable optical modules are mainly used for SDH optical communication and Ethernet data communication.
Appearance
Figure 1 shows the appearances of the SFP and eSFP optical modules, Figure 2 shows the appearance of the XFP optical module.

The dimensions of the SFP and eSFP optical modules are 13.4 mm (W) x 56.5 mm (D) x 8.5 mm (H).

The dimensions of the XFP optical module are 18.3 mm (W) x 78 mm (D) x 8.5 mm (H).
BOM
The BOM of a pluggable optical module is used to identify different types of optical modules. The BOM can be marked on a label that is attached to each pluggable optical module.
Figure 3 shows the label of a pluggable optical module.

You can check the specifications of an optical module in this manual according to the BOM of the optical module.
For more information about the optical modules of the OptiX OSN equipment, please download the attachment.
Back the Optical Module Technology
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