3. Devices using light guidance
3.1 Amplifiers
3.1.1 The wavelength-division multiplexing revolution
In the early 1990s, the first doped-fiber optical amplifiers appeared, providing the amplification function that had been lacking in optical transmission. This change led to the emergence of Wavelength Division Multiplexing (WDM), the principle of which is to transmit on a single optical fiber not a single modulated wavelength, but a set of channels making it possible to occupy the available bandwidth infinitely more efficiently. A single fiber...
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Devices using light guidance
Other optical fiber applications
Bibliography
Standards and norms
- Recommendations defining the different types of fiber http://www.itu.int/rec/T-REC-G/f - Union Internationale des Télécommunications (UIT) -
Directory
Manufacturers – Suppliers – Distributors (non-exhaustive list)
A handful of major manufacturers share the worldwide market for optical fibers and cables for long-distance telecommunications networks. These "generalist" groups manufacture just about every type of fiber used in telecommunications, and are capable of producing thousands of kilometers of fiber.
Corning
(...
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