Improvement of gain and noise figure in double-pass L-band EDFA by incorporating a fiber Bragg grating

Author

Yi, L.L. ; Zhan, L. ; Ji, J.H. ; Ye, Q.H. ; Xia, Y.X.

Author_Institution

Nat. Lab. on Fiber-Opt. Commun. Networks & Adv. Opt. Commun. Syst., Shanghai Jiao Tong Univ., China

Volume

16

Issue

4

fYear

2004

fDate

4/1/2004 12:00:00 AM

Firstpage

1005

Lastpage

1007

Abstract

An obvious improvement on both the gain and noise figure (NF) is demonstrated in the new double-pass L-band erbium-doped fiber amplifier (EDFA) with incorporating a fiber Bragg grating (FBG). Compared with the conventional L-band EDFAs, the gain is improved by about 6 dB in the new configuration for a 1580-nm signal with an input power of -30 dBm at 60 mW of 980-nm pump power. It is important that the NF is greatly reduced in the new configuration, as the FBG greatly compresses the backward amplified spontaneous emission. For the economical utility of pump power and erbium-doped fiber length, such a configuration may be a very competitive candidate in the practical applications of L-band EDFAs.

Keywords

Bragg gratings; erbium; laser noise; optical circulators; optical fibre amplifiers; optical pumping; spontaneous emission; 1580 nm; 60 mW; 980 nm; FBG; backward amplified spontaneous emission; circulator; double-pass L-band EDFA; erbium-doped fiber amplifier; fiber Bragg grating; gain; noise figure; pump power; Bandwidth; Bragg gratings; Erbium; Erbium-doped fiber amplifier; Fiber gratings; Laser excitation; Noise figure; Noise measurement; Optical pumping; Spontaneous emission;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2004.823697

Filename

1281852