光学学报, 2011, 31 (4): 0406003, 网络出版: 2011-04-01
近红外宽带发光掺铋石英光纤的研制
Fabrication of Bi-Doped Silica Fibers with Near Infrared Broadband Emission
光纤光学 铋掺杂光纤 近红外发光 溶液掺杂 改进化学汽相沉积 预制棒制备 fiber optics Bismuth-doped fiber near infrared luminescence solution doping modified chemical vapor deposition preform fabrication
摘要
采用改进化学汽相沉积(MCVD)与溶液掺杂结合的方法探讨了掺铋石英光纤预制棒的制备工艺,研制了具有红外宽带发光特性的掺铋SiO2-Al2O3-GeO2光纤。研究了不同掺锗浓度与氧气浓度条件下制备的预制棒的光谱特性。掺铋预制棒切片在532 nm和808 nm光激发下,产生中心波长为1146 nm,半峰全宽为204 nm与中心波长为1281 nm,半峰全宽为250 nm的近红外发光。拉制的光纤在808 nm光激发下,产生了中心波长为1265 nm,半峰全宽为280 nm的近红外发光;在976 nm光激发下,观察到光纤产生中心波长为1125 nm,半峰全宽为460 nm的超宽带近红外发光。光纤与预制棒的发光存在明显差异。通过控制预制棒制备工艺可以使铋掺杂光纤的发光满足实用的需要。
Abstract
The modified chemical vapor deposition (MCVD) and solution-doping method is applied to the fabrication of Bi-doped silica optical fiber preforms. Bi-doped SiO2-Al2O3-GeO2 fibers with near-infrared broadband emission are realized. The characteristic spectra of preforms with different Ge-codoped concentrations fabricated under various oxygen fluxes are experimentally investigated. The luminescence spectra from slices of fabricated preforms show an emission at 1146 nm with full width at half maximum (FWHM) of 204 nm when the preform is excited at 532 nm, and an emission at 1281 nm with FWHM of 250 nm when the preform is excited at 808 nm, respectively. The luminescence spectra of corresponding fibers show an emission at 1265 nm with FWHM of 280 nm when the preform is excited at 808 nm, and an emission at 1125 nm with the broadest FWHM of 460 nm when the preform is excited at 976 nm, respectively. The differences in emission between preform and fiber can be manipulated through controlling fabrication process of preform, so that the Bi-doped fiber with a suitable fluorescence and laser performance may be obtained.
吴金东, 陈丹平, 卢卫民, 张立永, 吴兴坤, 邱建荣. 近红外宽带发光掺铋石英光纤的研制[J]. 光学学报, 2011, 31(4): 0406003. Wu Jindong, Chen Danping, Lu Weimin, Zhang Liyong, Wu Xingkun, Qiu Jianrong. Fabrication of Bi-Doped Silica Fibers with Near Infrared Broadband Emission[J]. Acta Optica Sinica, 2011, 31(4): 0406003.