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Article | REF: E3680 V2

Comparison of optical and electrical links

Author: Mathias PEZ

Publication date: October 10, 2015

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2. Guided transmissions

In the optical field, unlike the electrical field, there are several modes of propagation in the guide, depending on its dimensions (see the article Optical interconnections [E 3 652] in this treatise):

  • when the cross-section of the guide is of the order of a few wavelengths, we speak of a single-mode guide;

  • when the cross-section is much larger, we speak of a multimode guide.

As we have already shown, single-mode optics offer the best performance in terms of bandwidth and linear attenuation,...

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