The optical time-domain reﬂectometer (OTDR) is one of the most complex instruments in ﬁber optic testing. To fully understand OTDR measurements, users must ﬁrst acquire traces, which must then be properly analyzed and interpreted.
The training session also includes more speciﬁc testing theory and a hands-on workshop that will show attendees how to operate the instrument and perform manual measurements using markers.
- 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
- Index of refraction (IOR)
- Helix factor
- Overview of iOLM features
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.
Attendees will receive a binder containing copies of presentations and other handouts.