Gain clamping in L-band erbium-doped fiber amplifier using a fiber Bragg grating

Author

Harun, S.W. ; Low, S.K. ; 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

293

Lastpage

295

Abstract

A gain-clamping technique for the long wavelength band (L-band) erbium-doped fiber amplifier (EDFA) is presented. It uses a single fiber Bragg grating (FBG) on the input side of erbium-doped fiber (EDF) to inject a portion of backward conventional band (C-band) amplified spontaneous emission (ASE) back into the system. The use of a narrow-band (NB) FBG has shown a better performance in clamped-gain level and noise figure compared to a broad-band FBG. The amplifier gain for the NB FBG set up is clamped at 15.4 dB with a variation of less than 0.3 dB for an input power as high as 0 dBm.

Keywords

Bragg gratings; erbium; optical fibre amplifiers; superradiance; 15.4 dB; EDFA; L-band erbium-doped fiber amplifier; amplifier gain; backward C-band amplified spontaneous emission; clamped-gain level; conventional band; fiber Bragg grating; gain-clamping; input side; long wavelength band; narrow-band FBG; noise figure; single fiber Bragg grating; Bragg gratings; Clamps; Erbium-doped fiber amplifier; Fiber gratings; High power amplifiers; L-band; Narrowband; Niobium; Noise figure; Spontaneous emission;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.986790

Filename

986790