During the troubleshooting the fiber link, we need to measure the optical laser receive and transmit level for ensuring the service quality. Sometimes, we might get high fiber optic laser power sometimes we receive very low laser. According to this scenario we require the fine tune and fiber optic transmission part.
Here you can check Laser output and Input power level. Also, all SFP related information. I am gathering information for one of my 10G interface that port numner is 9 (xe-0/0/9)
[edit]
user@geek# run show interfaces diagnostics optics xe-0/0/9
Physical interface: xe-0/0/9
Laser bias current : 39.000 mA
Laser output power : 0.7300 mW / -1.37 dBm
Module temperature : 44 degrees C / 111 degrees F
Module voltage : 3.3920 V
Receiver signal average optical power : 0.1921 mW / -7.16 dBm
Laser bias current high alarm : Off
Laser bias current low alarm : Off
Laser bias current high warning : Off
Laser bias current low warning : Off
Laser output power high alarm : Off
Laser output power low alarm : Off
Laser output power high warning : Off
Laser output power low warning : Off
Module temperature high alarm : Off
Module temperature low alarm : Off
Module temperature high warning : Off
Module temperature low warning : Off
Module voltage high alarm : Off
Module voltage low alarm : Off
Module voltage high warning : Off
Module voltage low warning : Off
Laser rx power high alarm : Off
Laser rx power low alarm : Off
Laser rx power high warning : Off
Laser rx power low warning : Off
Laser bias current high alarm threshold : 100.000 mA
Laser bias current low alarm threshold : 0.000 mA
Laser bias current high warning threshold : 90.000 mA
Laser bias current low warning threshold : 0.100 mA
Laser output power high alarm threshold : 1.2580 mW / 1.00 dBm
Laser output power low alarm threshold : 0.1990 mW / -7.01 dBm
Laser output power high warning threshold : 1.0000 mW / 0.00 dBm
Laser output power low warning threshold : 0.2510 mW / -6.00 dBm
Module temperature high alarm threshold : 90 degrees C / 194 degrees F
Module temperature low alarm threshold : -5 degrees C / 23 degrees F
Module temperature high warning threshold : 85 degrees C / 185 degrees F
Module temperature low warning threshold : 0 degrees C / 32 degrees F
Module voltage high alarm threshold : 3.800 V
Module voltage low alarm threshold : 2.700 V
Module voltage high warning threshold : 3.700 V
Module voltage low warning threshold : 2.800 V
Laser rx power high alarm threshold : 1.2589 mW / 1.00 dBm
Laser rx power low alarm threshold : 0.0251 mW / -16.00 dBm
Laser rx power high warning threshold : 1.0000 mW / 0.00 dBm
Laser rx power low warning threshold : 0.0316 mW / -15.00 dBm
From this output you can see here the Receiver signal average optical power and Laser output power, these two parts more important for finding the optical laser status.