SeTe alloy semiconductor core optical fibers

作     者：Huang, Kaimin Tang, Guowu Luo, Qianhang Qian, Guoquan Yang, Li Yuan, Fangqiang Shi, Zhenguo Qian, Qi Yang, Zhongmin 

作者机构：South China Univ Technol Guangdong Engn Technol Res & Dev Ctr Special Opt State Key Lab Luminescent Mat & Devices Guangzhou 510640 Peoples R China South China Univ Technol Guangdong Prov Key Lab Fiber Laser Mat & Appl Tec Guangzhou 510640 Peoples R China 

出 版 物：《MATERIALS RESEARCH BULLETIN》 (材料研究通报)

年 卷 期：2018年第100卷

页      面：382-385页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：China State 863 Hi-tech Program [2014AA041902] National Key Research and Development Program of China [2016YFB0402204] NSFC [61535014, 51472088, 51302086] Fundamental Research Funds for the Central Universities [2015ZP019] High-level Personnel Special Support Program of Guangdong Province [2014TX01C087] Science and Technology Project of Guangdong [2015B090926010] China National Funds for Distinguished Young Scientists 

主　　题：Optical materials Semiconductivity Semiconductor core fibers Stress sensing Optical switch 

摘      要：Se0.5Te0.5 semiconductor core optical fibers with phosphate glass cladding were fabricated by using a reactive molten core approach. The core was found to be amorphous with some oxygen diffusing in from the cladding glass. Crystalline Se0.5Te0.5 (c-Se0.5Te0.5) semiconductor core fibers were obtained by a post-drawing annealing process. Significant disparities in conductivity under stress and without stress were observed in c-Se0.5Te0.5 semiconductor core fibers. To the best of our knowledge, this is the first time that stress sensing can be realized in c-Se0.5Te0.5 semiconductor core optical fibers. This is in contrast to all previous work on stress sensing using fibers, which require the use of optical probing signals. In addition, it is found that more than 60 times change in conductivity between dark and illuminated states in c-Se0.5Te0.5 semiconductor core fibers. These results demonstrate that c-Se0.5Te0.5 semiconductor core optical fibers have promising applications in stress sensor, photodetector, and optical switch.