Gain enhancement in L-band EDFA through a double-pass technique
Document Type
Article
Publication Date
1-1-2002
Abstract
An improvement of gain in the long-wavelength band (L-band) is observed by double passing the forward amplified spontaneous emission and signal in the erbium-doped fiber (EDF) using a circulator, unlike the conventional single pass amplification. A gain enhancement as high as 11 dB is obtained for a 1570-nm signal with an input power of -20 dBm at 98 mW of pump power. However, a noise figure penalty of about 2 dB is observed.
Keywords
Circulator, Double-pass technique, Erbium-doped fiber, L-Band, Optical amplifier
Divisions
fac_eng,PHYSICS
Publication Title
IEEE Photonics Technology Letters
Volume
14
Issue
3
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
COinS