OTDR/iOLM Testing
EXFO Training
This course teaches attendees how to interpret OTDR measurements based on general reflectometry theory. It also covers the limitations of both the theory and the instrument, as understanding these limitations will enable the attendees to get reliable results from an OTDR. An overview of iOLM features is also available.
This Course Covers:
Basic types of fiber connections
Attenuation vs. the event dead zone
Calculation of attenuation and event dead zones
Causes of reflectance in the fiber
Fundamental theory of optical time-domain reflectometry
OTDR measurement method based on dynamic range
Manual OTDR measurements using markers:Four-point event loss
Three-point reflectance
Two-point ORL
Two-point section attenuation
Least square approximation (LSA) section attenuation
Parameter settings for fiber link characterization:Distance range
Pulse width
Averaging time
Wavelength
Index of refraction (IOR)
Helix factor
Overview of iOLM features
Prerequisites:
Basic comprehension of math and physics
Methodology
The first part of this course consists of lectures using PowerPoint presentations and demonstrations, while the second part consists of specific hands-on OTDR testing exercises and experiments, including manual testing using markers and trace acquisition for fiber characterization.
Documentation:
Attendees will receive a binder containing copies of presentations and other handouts.