DocumentCode
1255112
Title
Gain enhancement in L-band EDFA through a double-pass technique
Author
Harun, S.W. ; Poopalan, P. ; Ahmad, H.
Author_Institution
Dept. of Phys., Malaya Univ., Kuala Lumpur, Malaysia
Volume
14
Issue
3
fYear
2002
fDate
3/1/2002 12:00:00 AM
Firstpage
296
Lastpage
297
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 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
erbium; laser noise; optical circulators; optical fibre amplifiers; optical pumping; superradiance; 11 dB; 1570 nm; 2 dB; 98 mW; L-band EDFA; circulator; double-pass technique; erbium-doped fiber; forward amplified spontaneous emission; gain enhancement; input power; long-wavelength band; noise figure penalty; pump power; Bandwidth; Erbium-doped fiber amplifier; High speed optical techniques; L-band; Noise figure; Optical fibers; Optical noise; Optical pumping; Spontaneous emission; Stimulated emission;
fLanguage
English
Journal_Title
Photonics Technology Letters, IEEE
Publisher
ieee
ISSN
1041-1135
Type
jour
DOI
10.1109/68.986791
Filename
986791
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