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在以前的论文[1]中已经谈到,导光纤维中的OH~-含量可以低到几十个PP(?)(PP(?)为十亿分之几),而导光纤维的损耗在1.2微米左右能降低到0.5分贝/公里。进一步的研究谈到,在近红外区导光纤维的传输损耗受到纤芯玻璃掺杂剂的很大的影响。在图1中我们表示了三种纤维的光谱损耗曲线,这三种纤维的纤芯玻璃分
It has been mentioned in previous papers [1] that the OH- content of the light guide fiber can be as low as several tens of PP (?) (PP (?) Is a few parts per billion), while the loss of the light guide fiber In 1.2 microns or so can be reduced to 0.5 dB / km. Further research said that the transmission loss of the light guide fiber in the near infrared region is strongly influenced by the core glass dopant. In Fig. 1 we show the spectral loss curves of three fibers whose core glass fraction