The principle of fiber Bragg gratings(FBG)is briefly described.The formation technologies of FBG are systematically given and analyzed.In addition,the experimen
A novel theoretical model of thermal diffusion has been established to study thermal interaction between two neighboring diods in semiconductor laser arrays.The
Using pyromellitic dianhydride (PMDA) and 4,4’-diaminodiphenyl ether (ODA) as monomer materials, polyimide thin films have been prepared onto glass substrate b