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文章介绍了单模 W 型光纤的研制及试验研究的情况。这种 W 型单模光纤用 MCVD 法制备。芯子是 SiO_2-GeO_2,第一包层是 SiO_2-B_2O_3,其尺寸分别为13.5μm 和28μm,其外包以第二包层,再外面就是支承玻璃管,光纤外径125,光纤长1025米。该光纤在1.16—1.20时,损耗为3.2 db/km。
The paper introduces the research and experimental research on the single mode W fiber. This W-type single-mode fiber MCVD method. The core is SiO_2-GeO_2, the first cladding is SiO_2-B_2O_3, the size is 13.5μm and 28μm respectively, which is covered by the second cladding, and the outside is the supporting glass tube, the outer diameter of the optical fiber is 125 and the length of the optical fiber is 1025m. The fiber has a loss of 3.2 db / km at 1.16-1.20.