Types Of Optical Modules - Huawei S2720 Series Hardware Description

S2720&S2750 Series Ethernet Switches
Hardware Description
Figure 4-2 Structure of an optical module
1. Handle
4. Shell
7. Spring

4.2.2 Types of Optical Modules

Optical modules are available in various types to meet diversified requirements.
l
l
Issue 08 (2015-02-12)
6
1 3 2
2. Receiver
5. Label
8. Connector
Classified by transmission rates
Depending on transmission rates, optical modules are classified into FE, GE, 10GE, and
40GE optical modules.
Classified by encapsulation types
The higher transmission rate an optical module provides, the more complex structure it has.
Optical modules are encapsulated in different modes to provide different structures. Huawei
switches support optical modules of the following encapsulation types: SFP, eSFP, SFP+,
XFP, and QSFP+.
– SFP: small form-factor pluggable. SFP optical modules support LC fiber connectors
and are hot swappable.
– eSFP: enhanced small form-factor pluggable. An eSFP module is an SFP module that
supports monitoring of voltage, temperature, bias current, transmit optical power, and
receive optical power. Therefore, eSFP is also called SFP sometimes..
– SFP+: small form-factor pluggable plus, SFP with a higher rate. SFP+ optical modules
are more sensitive to electromagnetic interference (EMI) because they have a higher
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
4 Pluggable Modules for Interfaces
5
7
4
3. Transmitter
6. Dust plug
-
8
48