Study on the gain excursion and tilt compensation for 1.4- and 1.5-μm dual wavelength pumped TDFA

Author

Won Jae Lee ; Choong Hee Lee ; Philan Kim ; Jae-Oh Byun ; Jonghan Park ; Namkyoo Park

Author_Institution

Opt. Commun. Syst. Lab., Seoul Nat. Univ., South Korea

Volume

14

Issue

6

fYear

2002

fDate

6/1/2002 12:00:00 AM

Firstpage

786

Lastpage

788

Abstract

We analyze the gain excursion and tilt function of the thulium doped fiber amplifiers (TDFAs) for the 1.4- and 1.5-μm dual-wavelength pump approach. We also reveal that those two pump wavelengths act as independent control. factors for gain level and tilt function, because each pumps influence the populations of the first and second excited states (³H₄-³F₄) in a different manner. Gain excursion and gain tilt control of the TDFAs under the channel add-drop situations are demonstrated, revealing a suitable approach and inner dynamics of the gain/tilt excursion and compensation mechanisms for TDFAs.

Keywords

excited states; optical fibre amplifiers; optical pumping; population inversion; thulium; 1.4 micron; 1.5 micron; channel add-drop situations; compensation mechanisms; dual wavelength pumped TDFA; first excited state; gain excursion; gain level; independent control. factors; inner dynamics; populations; second excited state; thulium doped fiber amplifiers; tilt compensation; tilt function; Communication system control; Erbium-doped fiber lasers; Optical attenuators; Optical fiber amplifiers; Optical fiber communication; Optical pumping; Pump lasers; Stimulated emission; Vehicle dynamics; Wavelength division multiplexing;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2002.1003093

Filename

1003093