热处理下掺铋铝硅酸盐光纤光谱性能的增强  

Enhancement of Spectral Properties of Bismuth-Doped Aluminosilicate Fibers Under Heat Treatment

作　　者：张梦瑶 杨云聪 高磊 彭刚定[2] 朱涛[1] 赵前程 Zhang Mengyao;Yang Yuncong;Gao Lei;Peng Gangding;Zhu Tao;Zhao Qiancheng(College of Optoelectronic Engineering,Chongqing University,Chongqing 401331,China;School of Electrical Engineering and Telecommunications,University of New South Wales,Sydney 2052,New South Wales,Australia)

机构地区：[1]重庆大学光电工程学院,重庆401331 [2]新南威尔士大学电气工程与电信学院,澳大利亚新南威尔士悉尼2052

出　　处：《光学学报》2024年第20期35-43,共9页Acta Optica Sinica

基　　金：国家自然科学基金(61520106014,61675032);重庆大学引进人才科研启动项目(02100011080003)。

摘　　要：系统地分析了不同热处理条件对掺铋铝硅酸盐光纤的近红外光谱特性的影响。实验结果表明,加热后的光纤在温度箱外快速冷却(热淬火)可刺激铋铝活动中心(BAC-Al)在1140 nm附近的荧光强度增大。此外,在500℃加热2 min的热淬火条件下,BAC-Al的荧光强度增加了近2倍,表明合适的加热温度及较短的加热时间更有利于光纤内铋活动中心(BACs)含量增加,而较高的加热温度和较长的加热时间则会减少BACs含量、增大光纤的背景损耗。最后,详细探讨了热诱导下的BACs荧光增强/减弱机制。本研究为增强掺铋铝硅酸盐光纤在1100~1300 nm的光谱特性提供了有效的后处理方案。Objective With the rapid development of science and technology,the demand for data traffic has increased greatly in recent decades.The current optical fiber communication system has been unable to meet the growing demand for network data transmission,and there is a notable gap in the operating band of 1150‒1500 nm.Bismuthdoped quartz fiber can achieve ultrabroadband luminescence in the ranges of 1150‒1500 nm and 1600‒1800 nm,compensating for the spectral gap of existing rareearthdoped fibers.However,the practical application of bismuthdoped fibers still faces some challenges.To enhance the broadband spectral performance of bismuthdoped fibers(BDFs)in the nearinfrared region,various postprocessing methods have been proposed.Among these,heat treatment is considered one of the key factors affecting the spectral performance of BDFs,with the extent of the effect depending on the specific heat treatment parameters.To date,there have been no sufficient reports investigating the effects of specific heat treatment processes and parameters on the spectral performance of bismuthdoped aluminosilicate optical fibers at nearinfrared short wavelengths(1100‒1300 nm).Therefore,we systematically investigate the effects of different heat treatment parameters on the spectral properties of BACs in bismuth erbium codoped fibers(BEDFs)and determine the optimal heat treatment process and parameters for bismuthdoped aluminosilicate fibers,which is of great significance for their practical applications in fiber optic communications,sensing,and detection.Methods Firstly,the broadband smallsignal absorption spectra of BEDFs are measured using the cutback method to determine the absorption bands of different active centers,and the pump absorption of BEDFs at 830 nm is also measured.Then,a backward luminescence measurement for BEDFs with various thermal treatments is built,and the effects of thermal quenching and annealing,heating temperature and quenching times,and heating duration on the luminescence spectral characteristics of BACs

关 键 词：光纤光学 铋活动中心 热效应 掺铋光纤 光纤放大器 

分 类 号：TN253[电子电信—物理电子学] TN913.7