Broadband emission from Cr-doped fibers fabricated by drawing tower.
We report on the first fabrication of a Cr-doped fiber using a drawing-tower method with Cr:YAG as the core of the preform. Both Cr3+ and Cr4+ ions coexist in the Cr-doped fiber, and the amplified spontaneous emission (ASE) spectrum shows a broadband emission of 1.2 to 1.55 mum which can not be realized by using currently available fiber amplifiers. This indicates that the new Cr-doped fibers have the potential for being used as a broadband fiber amplifier to cover the bandwidth of the entire 1.3-1.6 mum range which exhibit 300 nm usable spectral bands.
Huang
Yi-Chung
YC
Lu
Yu-Kuan
YK
Chen
Jian-Cheng
JC
Hsu
Yi-Cheng
YC
Huang
Yu-Ming
YM
Huang
Sheng-Lung
SL
Cheng
Wood-Hi
WH