Introduction to Optical Waveguide Fibers
The greatest potential for fiber waveguides is long distance transmission of optical signals (10 to 10,000 meters). Therefore, this chapter will primarily treat their properties as transmission devices. The three practical factors for a signal link are its information carrying capacity (bits per second), its attenuation (how far the signal carries) and its ability to withstand the system environment. The information capacity will be emphasized with only a few remarks on attenuation since it has been covered in reviews.(1) Environmental factors are still in very early stages of investigation. However, it is not possible to cover thoroughly all the background theory that has been published on information carrying capacity of dielectric waveguides. Instead the main topics will be introduced in a way that hopefully provides a lasting foundation for more rigorous and technical development. New aspects are still being uncovered by research and it is not possible to foresee how important all these will become and which should be emphasized now.
KeywordsRefractive Index Phase Velocity Optical Waveguide Gaussian Pulse Dielectric Waveguide
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