6.1 Concepts
Appearance and Structure
shows the appearance of an optical module.
Figure 6-1
Appearance of an optical module (SFP optical module as an example)
1. Handle
2. Receiver
3. Transmitter
4. Shell
5. Label
6. Dust cap
7. Spring
8. Module connector
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Terms
Transmission distance
Maximum distance over which optical signals can transmit. Optical signals sent from
different types of sources can transmit over different distances due to negative effects of
optical fibers, such as dispersion and attenuation.
Interface rate
Maximum rate of electrical signals that an optical device can transmit without bit errors.
Various interface rates are defined in Ethernet standards, such as 125 Mbit/s, 1.25 Gbit/
s, 10.3125 Gbit/s, and 41.25 Gbit/s.
CloudEngine 7800&6800&5800 Series Switches
Hardware Description
6 Optical Module
Issue 16 (2015-08-26)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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