sfp single mode sc 2.5Gb/s BIDI 20km 9/125µm DFB transceiver
Basic specifications of optical modules
1. The output optical power refers to the output optical power of the light source at the transmitting end of the optical module.
2. Receiving sensitivity refers to the minimum received optical power of the optical module under a certain rate and bit error rate, unit: DBM.
3. Extinction ratio is one of the important parameters to measure the quality of optical modules. It refers to the minimum value of the ratio of signal average optical power and space signal average optical power under full modulation condition, which represents the distinguishing ability of 0 and 1 signals. The extinction ratio is not the greater the optical module, but the extinction ratio is better than the optical module meeting the 802.3 standard.
4. Optical saturation, also known as saturated optical power, refers to the maximum input optical power when maintaining a certain bit error rate (10-10-10-12) at a certain transmission rate, unit: DBM.
It should be noted that the photocurrent saturation phenomenon will appear in the photodetector under strong light irradiation. When this phenomenon occurs, the detector needs a certain time to recover. At this time, the receiving sensitivity is reduced, and the received signal may be misjudged, resulting in bit error. Moreover, it is very easy to damage the detector at the receiving end. It is necessary to avoid exceeding the saturation optical power in the operation.
2.5Gb/s SFP BIDI 20km 9/125µm DFB
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