Receive sensitivity refers to the minimum received optical power of an optical module at a certain rate and bit error rate, in dBm. In general, the higher the rate, the worse the receiving sensitivity, that means the greater the minimum received optical power, and the higher the requirements for the receiving end devices of the optical module.
Under a certain transmission rate, the maximum input optical power when a certain error rate is maintained.
When the received optical power is greater than the saturated optical power, it will also cause bit errors. Therefore, the loopback test of the optical module with high transmit optical power without attenuation will cause bit errors.
The saturated optical power value refers to the maximum optical power that can be detected at the receiving end of the optical module, which is generally -3dBm. When the received optical power is greater than the saturated optical power, it will also cause bit errors. Therefore, the loopback test of the optical module with high transmit optical power without attenuation will cause bit errors.
