User's Manual

Corning Optical Communications
User Manual
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Page 43
6. Optical Connection
Optical Transceiver Module
Single Port Bidirectional SFP Transceiver
The Figure below shows a pair of single port Bidirectional SFP transceivers. For devices optical connection, the
transceivers of two sides must be paired - the wavelength of one side is 1271nm, and the wavelength of another side is
1331nm. Otherwise it will fail the connection. All lower-level devices under this port won’t be working in system.
All the optical ports of all type devices have triangle LED indicators pointing to each port, which represents the
synchronization status of the upper and lower optical modules. The indicator turns to green when optical modules are
plugged in ports and synchronized. When connection is down, or there is no optical module in port, the indicator
remains red.
The single port SFP modules have to be used in pairs.
Dual Port SFP Transceiver
The optical connector unit includes an optical module and optical fibre. The Figure below shows that when using dual-
port SFP module, the optical transmitter and optical receiver should correspond to each other. In other words, the
optical transmitter of optical module A should correspond to the optical receiver of optical module B, and the receiver of
A should correspond to the transmitter of B. The optical receiver and transmitter terminals of the optical module can be
determined by the triangular mark on the optical module. The triangular mark in the yellow box and the red and blue
lines indicate the optical fibre connections.