10. Conclusion
We have just described the main factors that characterize signal propagation on a single-mode fiber. We have shown how, while attenuation was the only parameter considered in early systems, it became necessary to take into account more complex propagation phenomena as transmission rates, distances and injected powers increased.
In the course of this history of optical telecommunications, two types of fiber emerged for transmission at a wavelength of 1.55 μm: the so-called standard high-dispersion G 652 fiber and the dispersion-shifted G 653 fiber. The development of amplified systems and wavelength-division multiplexing, and the correlative growing importance of non-linear effects, have led to a review of the conclusions reached about dispersion-shifted fiber, and have established the hegemony of G 652 and derivative families, such as the latest-generation G 655...
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Conclusion
Bibliography
Conferences
Two major conferences are held each year, showcasing the latest advances in optical telecommunications research:
ECOC (European Conference on Optical Communications), which takes place in a European city in September. The website address is http://www.ecocxxxx.org where xxxx designates the...
Standards and norms
Recommendations concerning the various types of optical fiber for telecommunications, available on the International Telecommunication Union (ITU) website at http://www.itu.int/rec/T-REC-G.652/fr
Directory
Manufacturers – Suppliers – Distributors (non-exhaustive list)
A few 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.
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