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据《日经电子学》杂志198092月18日刊报导: 日本电电公社武藏野电气通信研究所报导了在1.5um波段色散为零的光纤的各种特性(井元等,电子通信学会技术研究报告,Vol.79,№.218,OQE 79—121,1980年1月)。过去曾报导过,在1.5～1.6μm波段光纤的传输损耗最低。如果在该波段能使波长色散为零,那么就能够实现长距离大容量传输。为了使该波段的波长色散为零,必须使材料色散(折射率的波长依赖关系)和结构色散(传输模的群速度的波长依赖关系)在
According to “Nikkei Electronics” magazine January 18, 1980 issue of the report: Musashino Electric Telecommunications Research Institute of Japan's Denso Corporation reported various characteristics of the optical fiber in the 1.5um band zero dispersion (Well yuan, Institute of Electronics and Communications Technology Research Report, Vol. 79, No. 218, OQE 79-121, January 1980). It has been reported in the past that the transmission loss of optical fiber in the 1.5-1.6μm band is the lowest. If you can make the wavelength dispersion in this band is zero, then you can achieve large-capacity long-distance transmission. In order to disperse the wavelength in this wavelength band to zero, the dispersion of the material (the wavelength dependency of the refractive index) and the structural dispersion (the wavelength dependence of the group velocity of the transmission mode)