Power budget
Tx: Optical output power dBm
Rx: Optical sensitivity dBm
Total power budget 0 dB
Singlemode fiber loss
Insertion loss 0 dB patch dB/patch
Splice loss 0 dB splice dB/splice
Dark fiber loss
Insertion loss dB
Passive device attenuation
+  Splitter0 dB
Safety margin dB  
Total power loss: 2 dB