Two-stage S-band erbium-doped fiber amplifier using a depressed-cladding fiber
Document Type
Article
Publication Date
1-1-2005
Abstract
A two-stage short-wavelength-band erbium-doped fiber amplifier (S-band EDFA) is demonstrated using a depressed-cladding erbium-doped fiber (EDF). The EDF has a fundamental-mode cutoff wavelength of about 1525 nm in order to suppress amplified spontaneous emission at the longer wavelength. The highest gain curve is obtained by setting the first- and second-stage pumps at 85 and 190 mW, respectively, where the unsaturated gains are obtained at about 28 dB. The gain was limited by the 12-dBm saturation power of the amplifier. The unsaturated noise figure ranged from 8.5 to 9.3 dB for all pump combinations tested.
Keywords
Depressed cladding EDF, Erbium-doped fiber amplifier, S-band, S-band EDFA
Divisions
fac_eng,PHYSICS
Publication Title
Microwave and Optical Technology Letters
Volume
46
Issue
1
Publisher
John Wiley & Sons