Installation and Reference Guide
10G SFP+ Modules
A single-mode fiber (SMF) has a smaller core and can transmit one mode of light. Therefore, it has a lower modal
dispersion and is applicable to remote communication.
Connector Type
Optical fibers are joined by optical fiber connectors to form fiber jumpers. A fiber jumper is connected to optical modules
through an optical fiber connector, so that the optical channel is detachable for the convenience of debugging and
maintenance of the optical system. Fiber connectors are in many types. The commonly used lucent connectors (LCs) are
shown in Figure 3-4 and Figure 3-5.
Figure 3-4 Single-core LC Connector
Figure 3-5 Dual-core LC Connector
DDM
Digital Diagnostic Monitor (DDM) is widely used in optical modules to dynamically measure the temperature, intensity of
transmitted and received light, voltage, and laser bias current of the module. You can run commands to get the monitoring
result in the host system that supports display of DDM information.
Intensity of Transmitted Light
Intensity of transmitted light refers to the optical output power transmitted from the optical module. The unit is dBm.
Intensity of Received Light
Intensity of received light refers to the optical input power received by the optical module. The unit is dBm. If the actual
received light intensity is less than the minimum value, the module may fail in connection or lose many frames. If the
actual received light intensity is greater than the maximum value, the module may be damaged.
Module Installation Precautions
Preparation before Installation
Before installation, electron static discharge (ESD) protection is needed. To avoid damages to the electronic devices in
the SFP+ optical and copper cable modules caused by the static electricity generated during the installation, please wear
