2. Optical Time Domain Reflectometry
2.1 Optical distance measurement
2.1.1 A reminder of propagation in optical fibers
An optical pulse propagates in the dielectric waveguide that is the optical fiber at a speed known as the group velocityv g (in m · s –1 ) equal to the speed of light in a vacuum c 0 divided by the fiber's group index n g :
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Optical Time Domain Reflectometry
Using the reflectometer for characterization
Bibliography
Standardization
- Laser safety – Part 1: Equipment classification and requirements - NF EN 60825-1 - 01-08
- Calibration of optical time domain reflectometers (OTDR) – Part 1: OTDR for single-mode fibers - NF EN 61746-1 - 2014
- Laser safety – Part 1: Equipment classification, specifications and user guide - IEC 60825-1 - 1998
- Calibration of optical time-domain reflectometers (OTDR) – Part 1: OTDR for single mode fibres...
Training
Organization ARUFOG Training reference n° 08-FOR : OTDR : Operation, use and interpretation of results – Trainer CHAMPAVÈRE (A.) (VIAVI) http://www.arufog.org
Solutions/GuidOptix http://www.guidoptix.com
Directory
Main manufacturers – Field reflectometer manufacturers
• French manufacturer/European manufacturers :
VIAVI (ex-Schlumberger, Enertec, WWG, Acterna, JDSU) https://www.viavisolutions.com/fr-fr
(Note: Fiber Optics Division, R&D and reflectometer production at Saint-Étienne)
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