Anritsu BERTWave MP2100B, Operation Manual, Page: 265 / 382

8.1 Optical Interface Types
8-3
8
Operating Optical Interface
Optical Transceiver (SFP+)
Optical transceivers combine the following two functions in one module:
●
Tx for converting electrical signal into optical signal for transmission
●
Rx for converting optical signal into electrical signal for reception
The format and pin layout of the optical transceiver for communication
are standardized by the industry organization. So, just changing the
optical transceiver makes the optical interface specifications easily.
An optical transceiver conforming to the SFP or SFP+ standard can be
connected to the Option 051. For the references of the optical transceiver,
refer to Appendix F “Bibliography”.
The logic circuit is used in the Optical transceiver. This is the different
from the O/E converter. The relationship between input signal and output
signal is the nonlinearity because the waveform of the optical transceiver
is shaped by the logic circuit.
+V
Photodiode
Limiter amp
Rx In
Rx +
Rx -
Buffer
Tx +
Tx -
Tx Out
+V
Limiter amp
Laser
Diode
Laser
Diode
Driver
Figure 8.1-2 Optical Transceiver Block Diagram