admin> show interfaces diagnostics optics et-0/0/4 
Physical interface: et-0/0/4
    Module temperature                        :  35 degrees C / 96 degrees F
    Module voltage                                 :  3.3340 V
 Lane 0
    Laser bias current                              :  43.465 mA
    Laser output power                          :  1.810 mW / 2.58 dBm
    Laser receiver power                        :  0.854 mW / -0.68 dBm
  Lane 1
    Laser bias current                               :  43.076 mA
    Laser output power                           :  1.676 mW / 2.24 dBm
    Laser receiver power                         :  0.767 mW / -1.15 dBm
  Lane 2 
    Laser bias current                               :  40.916 mA
    Laser output power                           :  1.041 mW / 0.18 dBm
    Laser receiver power                         :  0.430 mW / -3.66 dBm
  Lane 3
    Laser bias current                               :  47.097 mA
    Laser output power                           :  1.712 mW / 2.33 dBm
    Laser receiver power                         :  0.924 mW / -0.35 dBm