H3C Technologies H3C S12500 Series Switches - Manual (Page 12)

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Figure 4 End face of a 12-fiber connector
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24-fiber MPO connector
Figure 5 End face of a 24-fiber connector
Optical parameters
CAUTION:
The average transmit power of a long-haul fiber transceiver module is greater than the saturated optical
power. Be careful about the length of the optical fiber you use to make sure the actual receive power
reaching the fiber transceiver module is less than its saturated optical power. Otherwise, the fiber
transceiver module might be damaged.
NOTE:
Average transmit and receive power ranges are provided for transceiver modules in this guide.
Transmit power
Transmit power is the power at which the transmitter of a fiber transceiver module transmits optical
signals, in dBm.
Receive power
Receive power is the power at which the receiver of a fiber transceiver module receives optical signals,
in dBm.
Receiving sensitivity
Receiving sensitivity is the minimum optical power that is needed at the receiving end for the optical
module to receive optical signals at a given data rate and bit error rate, in dBm. The higher the data rate
is, the worse the receiving sensitivity is, the greater the minimum receive power is. A greater receive
power has higher requirements on the receiving components of the optical module.