Title OTDR and Fiber Characterization : Optical Time Domain Reflectometry

Optical Time Domain Reflectometry
Title OTDR and Fiber Characterization

Author : André CHAMPAVÈRE

Publication date: October 10, 2018 | Lire en français

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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 c₀ divided by the fiber's group index n_g:

v_{g} = \frac{c_{0}}{n_{g}} avec c_{0} = 299 792 458 m \cdot s^{- 1}

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Optical Time Domain Reflectometry

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Using the reflectometer for characterization

Bibliography

(1) - CHAMPAVÈRE (A.) - Key OTDR specification relates to user's real needs. - Wavetek Wandel Goltermann, Test and Measurement World, France, janv. 1999.
(2) - BOUQUAIN (M.) - Mesures fibre optique : normalisation et métrologie. - 07-FOR Formation ARUFOG.

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Optical Time Domain Reflectometry Title OTDR and Fiber Characterization

2. Optical Time Domain Reflectometry

2.1 Optical distance measurement

Bibliography

Optical Time Domain Reflectometry
Title OTDR and Fiber Characterization