Cladding Modified Fiber Bragg Grating for Copper Ions Detection

作     者：Husam Abduldaem Mohammed Aqiel Almamori Ali A.Alwahib 

作者机构：Electronic and Communication Engineering DepartmentCollege of EngineeringUniversity of BaghdadBaghdad47202Iraq Department of Laser and Optoelectronics EngineeringUniversity of TechnologyBaghdad47202Iraq 

出 版 物：《Semiconductor Science and Information Devices》 (半导体科学与信息器件（英文）)

年 卷 期：2021年第3卷第2期

页      面：12-16页

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 

主　　题：Fiber Bragg grating Optical fiber sensors Etched fiber C-band D-heavy metals 

摘      要：This paper reports a fiber Bragg grating(FBG)as a *** FBGs were etched using a chemical agent,namely,hydrofluoric acid(HF).This implies the removal of some part of the cladding ***,the evanescent field propagating out of the core will be closer to the environ­ment and become more sensitive to the change in the *** proposed FBG sensor was utilized to detect toxic heavy metal ions aqueous medium namely,copper ions(Cu^(2+)).Two FBG sensors were etched with 20 and 40μm diameters and *** sensors were studied towards Cu^(2+)with different concentrations using wavelength shift as a result of the interaction between the evanescent field and copper *** FBG sensors showed a good response in terms of significant wavelength shift in corresponding to varying Cu2+concentrations when immersed in aqueous *** sensors exhibited excellent repeatability towards Cu *** results demonstrate that the smaller FBG etching diameter,the better optical response in terms of wavelength and linearity.