what is important tools used to calculate the fiber optics link budget ?

can use OTDR and both of power transmitter and power meter.

To calculate the worst-case estimate of power budget (PB), you assume minimum transmitter power (PT) and minimum receiver sensitivity (PR):

PB = PT – PR

The following hypothetical power budget equation uses values measured in decibels (dB) and decibels referred to one milliwatt (dBm):

PB = PT – PR

PB = –15 dBm – (–28 dBm)

PB = 13 dB

otdr and power meter are the tools used to calculate fiber optics link budget.

Pathloss maybe considered. Thanks

OTDR and Optical power meter 

to calculate fiber optic link budget, the use of a power meter and an OTDR is required

OTDR,Optical power meter and Light source

Power meter , laser surce , OTDR

 TRANSMIT POWER

RECEIVER POWER REQUIRED

INSERTION LOSS OF CONNECTORS AND SPLICES

FIBER DISTANCE

CALCULATOR

1. system link power budget and

2. system rise time budget

power budget (PB) & transmitter power (PT) and minimum receiver sensitivity (PR):

PB = PT values measured in decibels (dB) 

PB = PT – PR