Transcript Chapter 10 Optical fiber measuring instruments and testing single

Chapter 10 Optical fiber measuring instruments and testing
single-mode fiber networks
Schematic illustration of the main parts of an OTDR
Simplified graph from an OTDR
OTDR curve and how it is used for distance measurement
OTDR curve and its use in attenuation measurement
Two – point method
The many-point method
Three graphs with different pulse width showing “dead zone”
and noise caused by the pulse width. The time set to the left,
is only to give an indication of the time interval commonly
used.
Block diagram of a stabilized light source with laser diode
module
The connection of a stabilized light source and power
meter for determining the reference value
Setup for measuring the cable attenuation of an
operational installation
Measuring connector and splice loss
Pinpointing the fault