Understanding Optical Modules; What Is An Optical Module - Huawei AR500 Series Hardware Description

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AR500&AR510&AR531&AR550&1500&AR2500
Industrial Switch Routers
Hardware Description
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7.2 Understanding Optical Modules

7.2.1 What Is an Optical Module

On an optical network, a sender needs to convert electrical signals into optical signals before
sending them to a receiver, and the receiver needs to convert received optical signals into
electrical signals. An optical module is a component that completes electrical/optical
conversion on an optical network.
Issue 10 (2019-03-06)
Some non-Huawei-certified optical modules have defects in data bus designs. Using such
an optical module on a router causes suspension of the connected data bus on the router.
As a result, data on the suspended bus cannot be read.
Improper edge connector size damages electronic devices of optical interfaces.
If a non-Huawei-certified optical module with improper edge connector size is used on
an optical interface, electronic devices of the optical interface will be damaged by short
circuits.
Non-standard temperature monitoring causes incorrect alarms.
The temperature monitoring systems of some non-Huawei-certified optical modules do
not comply with industry standards and report temperature values higher than the real
temperature. When such optical modules are used on a router, the system will report
incorrect temperature alarms.
Improper register settings cause errors or failures in reading parameters or diagnostic
information.
Some non-Huawei-certified optical modules have improper A0 register values, which
can cause errors or failures when the system attempts to read parameters or diagnostic
information from a data bus.
Some non-Huawei-certified optical modules are not designed in compliance with EMC
standards and have low anti-interference capability. Additionally, they bring
electromagnetic interference to nearby devices.
The operating temperature ranges of non-Huawei-certified optical modules cannot meet
service requirements. When they are used under relatively high temperature, the optical
power decreases, resulting in service interruption.
Copyright © Huawei Technologies Co., Ltd.
Figure 7-2 shows the structure of an optical module.
7 Pluggable Modules for Interfaces
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