中英論文翻譯對照塑料光纖傳光原理通信(文件)
【正文】 ry good light transmission rate, from POF core material selection and deuterium fluoride polymer material prepared POF in the near infrared region have a very good light transmission. Propagation of light in vacuum is the fastest speed, transmission medium, its refractive index is different from the speed of light transmission is also different. In contrast, a large refractive index of light transmission medium is denser medium, the refractive index of the transmission medium is a little sparse optical media, in terms of the POF, POF core material for the optical denser medium, POF material for light skin thinning medium, the light optical density media in the core material will reduce the propagation velocity, so the light transmission in the core material in the skin material slower than the transmission speed。 side light and fluorescence POF POF is by total internal reflection of light transmission principle, for more than singlecore POF side light loss caused by the side of nonnatural light, and for multicore side of the light bending loss POF is produced by the luminous side. After a specific wavelength of fluorescence excitation POF issued after a specific wavelength of light, and not only exciting light incident from the end, but also from the side of the ncident. 。 the refractive index of pure PMMA is , so the light in which the transmission rate of about 108m / s. Homogeneous or inhomogeneous medium light transmission medium to satisfy Fermat (Fermat) principle, that light from the space point to another along the time for extreme distance and spread, that is, the smallest of light along the optical path or the path of maximum or constant munication. principle of light transmission Fluorescent POF POF core material is mixed with a certain amount of fluorescent agent prepared from the POF, POF after such a specific wavelength of light irradiation, will send a specific wavelength of light, the principle is more plex, can be simply that the ground state molecule After bonding electron absorption of light excitation, and then return to the singlet ground state molecules that fluoresce. Refractive index distribution by fluorescence of structure POF can be divided into fluorescent SI POF and fluorescence GI POF, doped organic dye POFA most important feature is the wide range o
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