Double-clad Cr4+:YAG crystal fiber amplifier.
A novel double-clad Cr4+:YAG crystal fiber is demonstrated by use of a codrawing laser-heated pedestal growth method. Up to 10 dB of gross gain at a wavelength of 1.52 microm is achieved at a pump power of 0.83 W, which, to our knowledge, is the first Cr4+-doped fiber amplifier in the optical fiber communication band.
Lo
C Y
CY
Institute of Electro-Optical Engineering, National Sun Yat-Sen University, Kaohsiung 804, Taiwan.
Huang
K Y
KY
Chen
J C
JC
Chuang
C Y
CY
Lai
C C
CC
Huang
S L
SL
Lin
Y S
YS
Yeh
P S
PS