Optical Properties Of The Transmission Medium

Felix P. Kapron

doi:10.1117/12.956708

21 December 1978 Optical Properties Of The Transmission Medium

Felix P. Kapron

Proceedings Volume 0150, Laser and Fiber Optics Communications; (1978) https://doi.org/10.1117/12.956708
Event: 22nd Annual Technical Symposium, 1978, San Diego, United States

Abstract

From a user viewpoint, the main optical properties of fiber waveguides are reviewed. Attention is given to the more subtle secondary effects that can influence the interpretation of attenuation, dispersion and numerical aperture data given in typical fiber or optical cable specification sheets. Based upon such optical specifications, systems designers can usually do only a first order estimate of how the fiber will perform in their particular application. Numerous references are given, emphasizing recent rather than original contributions. Secondly, the fiber is modelled as an interactive "black box" specified by a minimum number of phenomenological parameters. With transmitter and receiver characteristics held fixed, these parameters are independently varied to calculate their relative importance in systems performance. Multimode and monomode guides are considered, both at conventional and longer wavelengths. It is found that toward increasing transmission distances at lower information rates, the significant improvements in decreasing order of effectiveness are: longer wavelength operation, lower attenuation, higher launched power. At higher rates, mode mixing, an increase in multimode bandwidth and narrowing of source linewidth assume importance.

Citation Download Citation

Felix P. Kapron "Optical Properties Of The Transmission Medium", Proc. SPIE 0150, Laser and Fiber Optics Communications, (21 December 1978); https://doi.org/10.1117/12.956708

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