Ohmori Y
Appl Opt. 1981 Dec 15;20(24):4307-12. doi: 10.1364/AO.20.004307.
Transmission bandwidth properties of GeO(2)-P(2)O(5)-doped silica graded-index fibers have been investigated. Theoretical results obtained from Olshansky's theory are represented in the form of a bandwidth map with profile parameter alpha on the vertical axis and wavelength lambda horizontally. The material dispersion sigma(m)(lambda) and the optimal profile parameter alpha(opt)(lambda) determined by the glass refractive-index measurement are used for calculating the transmission bandwidth. It is confirmed that the estimated results from the bandwidth map agree with the experimental results of transmission bandwidth measurements at lambda = 0.82,1.06,1.27, and 1.52 microm for twenty GeO(2)-P(2)O(5)-doped silica graded-index fibers with different alpha values.
研究了掺GeO₂ - P₂O₅的二氧化硅渐变折射率光纤的传输带宽特性。从奥尔尚斯基理论获得的理论结果以带宽图的形式呈现,纵轴为剖面参数α,横轴为波长λ。通过玻璃折射率测量确定的材料色散σₘ(λ)和最佳剖面参数αₒₚₜ(λ)用于计算传输带宽。对于二十根具有不同α值的掺GeO₂ - P₂O₅的二氧化硅渐变折射率光纤,证实了从带宽图得到的估计结果与在λ = 0.82、1.06、1.27和1.52微米处传输带宽测量的实验结果相符。