Supported by the National High Technology Research and Development Program of China (863 Project) (Grant No. 2007AA01Z258);the National Natural Science Foundation of China (Grant No. 60771008);Program for New Century Excellent Talents in University (Grant No. NCET-06-0076);Beijing Natural Science Founda-tion (Grant No. 4052023);the Beijing Jiaotong University Foundation (Grant No. 2006XM003)
A kind of erbium doped photosensitive fiber(EDPF) was proposed and fabricated,whose core was made of double layers named photosensitive layer and erbium doped layer.The double-layer core de-sign can overcome difficult...