Title :
Reducing pulsewidth broadening in L-band EDFAs by use of a new L-band EDF
Author :
Yu, Jianjun ; Jeppesen, Palle ; Palsdottir, Bera ; Knudsen, Stig N.
Author_Institution :
Res. Centre COM, Tech. Univ. Denmark, Lyngby, Denmark
fDate :
7/1/2001 12:00:00 AM
Abstract :
Due to a small effective area of erbium-doped fiber (EDF), a short pulse will be broadened because of self-phase modulation when it is amplified in an L-band EDF amplifier (EDFA); hence, it is necessary to develop a new EDF with large Er/sup 3+/ concentration to reduce the EDF length and a large effective area to reduce the nonlinear effect in the L-band EDFA. In this letter, it will be demonstrated that the pulsewidth can be maintained when a short pulse is amplified in an L-band EDFA consisting of a new L-band EDF.
Keywords :
erbium; optical fibre amplifiers; self-phase modulation; EDF length; L-band EDF; L-band EDFA; erbium-doped fiber; large Er/sup 3+/ concentration; large effective area; nonlinear effect; pulsewidth broadening reduction; self-phase modulation; short pulse; small effective area; Absorption; Erbium-doped fiber amplifier; L-band; Optical amplifiers; Optical attenuators; Pulse amplifiers; Pulse modulation; Scanning probe microscopy; Space vector pulse width modulation; Wavelength measurement;
Journal_Title :
Photonics Technology Letters, IEEE
