文档介绍：Fiber-Optic Technology
Definition
Fiber-munications is based on the principle that light in a glass medium
can carry more information over longer distances than electrical signals can carry
in a copper or coaxial medium. The purity of today's glass fiber, combined with
improved system electronics, enables fiber to transmit digitized light signals well
beyond 100 km (60 miles) without amplification. With few transmission losses,
low interference, and high bandwidth potential, optical fiber is an almost ideal
transmission medium.
Overview
The advantages provided by optical fiber systems are the result of a continuous
stream of product innovations and process improvements. As the requirements
and emerging opportunities of optical fiber systems are better understood, fiber
is improved to address them. This tutorial provides an extensive overview of the
history, construction, operation, and benefits of optical fiber, with particular
emphasis on outside vapor deposition (OVD) process.
Topics
1. From Theory to Practical Application: A Quick History
2. How Fiber Works
3. Outside Vapor Deposition (OVD) Process
4. OVD Benefits
5. Fiber Geometry: A Key Factor in Splicing and System Performance
6. How to Choose Optical Fiber
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Correct Answers
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Glossary
1. From Theory to Practical Application: A
Quick History
An important principle in physics became the theoretical foundation for optical
munications: light in a glass medium can carry more information over
longer distances than electrical signals can carry in a copper or coaxial medium.
The first challenge undertaken by scientists was to develop a glass so pure that
one percent of the light would be retained at the end of one kilometer (km), the
existing unrepeatered transmission distance for copper-based telephone systems.
In terms of attenuation, this one-percent of light r