Spectral characterization of fiber Bragg grating with etched fiber cladding  

作　　者：周倩 宁提纲 裴丽 李超 

机构地区：[1]Key Lab.of All Optical Network and Advanced Telecommunication Network,Ministry of Education,Beijing Jiaotong University

出　　处：《Optoelectronics Letters》2012年第5期328-331,共4页光电子快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (Nos.60837002 and 61177069);the Ph.D. Programs Foundation of Ministry of Education of China (No.20090009110003);the Fundamental Research Funds for the Central Universities (No.2011YJS219)

摘　　要：A new method is presented to tune Bragg wavelength slightly by using hydrofluoric acid to etch fiber cladding.The spectral characteristics before and after etching and the change properties of Bragg wavelength are studied.Cladding modes are reduced during the etching process.High-order cladding modes are converted into radiation modes,and energy of cladding modes is coupled to the outside.As the cladding radius decreases,the Bragg wavelength shifts to longer direction.Experimental results show that this method can tune Bragg wavelength slightly,and the tunable range is 0.002-0.120 nm.

关 键 词：ETCHING Fiber Bragg gratings Hydrofluoric acid Spectrum analyzers WAVELENGTH 

分 类 号：TN253[电子电信—物理电子学] TN244