Semenov V A, Belov A V, Dianov E M, Abramov A A, Bubnov M M, Semjonov S L, Shchebunjaev A G, Khopin V F, Guryanov A N, Vechkanov N N
Appl Opt. 1995 Aug 20;34(24):5331-7. doi: 10.1364/AO.34.005331.
The optimum refractive-index profile and drawing temperature were investigated so as to maximize the figure of merit for multicladding broadband dispersion-compensating fibers. Based on the results of the investigation, the authors have fabricated a highly bend-resistant fiber with a 92.6-ps/(nm dB) figure of merit using the modified chemical-vapor deposition method for dispersion compensation in the 1.5-1.6-µm wavelength region. The manufactured dispersion compensator does not suffer bend loss at 1.55 µm for curvatures of radia of 6.3 and 3.3 cm, and it has a 1.1-dB/km bend loss at a curvature of radius of 1.6 cm. Codoping the germanium silicate core with fluorine diminishes the optical loss down to 0.70 dB/km at a 1.55-µm wavelength.
为了使多包层宽带色散补偿光纤的品质因数最大化，对最佳折射率分布和拉丝温度进行了研究。基于研究结果，作者采用改进的化学气相沉积法制造了一种品质因数为92.6 ps/(nm·dB)的高抗弯曲光纤，用于1.5 - 1.6 µm波长区域的色散补偿。所制造的色散补偿器在1.55 µm波长下，对于半径为6.3 cm和3.3 cm的曲率不会产生弯曲损耗，而在半径为1.6 cm的曲率下弯曲损耗为1.1 dB/km。在硅酸锗纤芯中同时掺杂氟可将1.55 µm波长下的光损耗降低至0.70 dB/km。
