9Connecting the switch to the network through an optical fiberUse an optical fiber to connect an optical fiber port, for example, Ethernet fiber port, POS fiber port, orRPR fiber port, on the switch to the network. You must install a transceiver module to the switch, and theninsert the fiber connector to the module.Introduction to fiber connectorFiber connectors are indispensable passive components in an optical fiber communication system. Theyallow the removable connection between optical channels, which makes the optical system debuggingand maintenance more convenient and the transit dispatching of the system more flexible. Amongvarious fiber connectors, only the LC connector is described here.Figure 8 LC connectorPrecautionsFollow these precautionary steps:• When selecting a fiber network facility, make sure the type of the connector and the fiber matchesthe adopted optical port.• Be sure to install the dust cover if the optical port is not connected to a fiber connector.• Some invisible rays may be emitted from the optical port if the optical port is not connected to afiber connector or the dust cover is removed. Therefore, never stare at the optical port directly.• Never bend or curve a fiber when connecting it.Installing a transceiver moduleThe installation procedures of an XFP, SFP, and SFP+ module are similar. The following uses an SFPmodule as an example.CAUTION:Do not touch the golden finger of an SFP module during installation.To install an SFP module:1. Put on an ESD-preventive wrist strap, and make sure it makes good skin contact, and is wellgrounded.2. Unpack the SFP module. Close the clasp by pushing it up over the SFP module, and then gentlyinsert the SFP module into the interface slot until it clicks into place, as shown in Figure 9.