The main parameters of the optical module

1 TxLOP:Optical Average Power

Signal logic for 1 and 0 arithmetic average optical power

2 ER:ExtinctiRatio

Signal logic for the 1 the light power and for the 0 optical power of the size of the ratio. The formula is: P1ER = 10log the P0 (dB,) the ER said that ExtinctiRatio, units of dB,, P1, and P0, respectively, said that the optical power for logic 1 and 0

3 Receiver Sensitivity

Measure the receiving end in order to ensure a certain bit error rate (1 × 10exp (-12)) required to receive the minimum average optical power, in dBm. Bit error rate refers to the longer period of time after the receiving end of the photoelectric conversion incometo the error code and BERT output side gives the ratio of the code.

4 LOS the Assert&LOS Dessert

Loss of signal indication (LOS the Assert) and signal loss recovery directions (LOS Dessert) the receiver outputs an electrical signal, the adequacy of the level of its potential reflects the receiver the received optical signal intensity, the potential and the potential default in order to determine the lightsignal is lost. potential comparison with a certain hysteresis effect is achieved, usually the default signal corresponding to the optical power as an indication, in dBm

5 EMM: the Eye the Mask Margin

Eye mask margin (EMM: the Eye the Mask Margin) eye diagram opening degree, refers to the optimum sampling point margin of the eye diagram “open” degree of aberration-free eye diagram opening degree should be 100 [%]. Eye diagram template tolerance is the eye diagram template expansion, until the eye diagram of the sampling points into the expansion area of the template expansion percentage