Open AccessDesign and Control of Gain‐Flattened Erbium‐Doped Fiber Amplifier for WDM Applications
Author(s) -
Kim Hyang Kyun,
Park Seo Yeon,
Lee Dong Ho,
Park Chang Soo
Publication year - 1998
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.98.0198.0103
Subject(s) - flatness (cosmology) , materials science , wavelength division multiplexing , optical amplifier , erbium , erbium doped fiber amplifier , amplifier , amplified spontaneous emission , dispersion shifted fiber , optics , optoelectronics , automatic gain control , dbm , fiber , wavelength , doping , fiber optic sensor , physics , laser , cmos , cosmology , quantum mechanics , composite material
A simple experimental method to design gain‐flattened erbium‐doped fiber amplifier is proposed and demonstrated based on the two linear relations between the output power and the pump power, and between the gain and the length of the erbium‐doped fiber at the gain flattened state. The spectral gain variation of the erbium‐doped fiber amplifier constructed by this method was less than 0.4 dB over 12 nm (1,545~1,557 nm) wavelength region. The gain flatness is also controlled within 0.4 dB over the input power range of −30 15 dBm/ch through the feedback control utilizing the amplified spontaneous emission power in the 1,530 nm region.