All-optical gain-clamped erbium-doped fiber-ring lasing amplifier with laser filtering technique

Author

Subramaniam, T. ; Mahdi, M.A. ; Poopalan, P. ; Harun, S.W. ; Ahmad, H.

Author_Institution

Dept. of Phys., Malaya Univ., Kuala Lumpur, Malaysia

Volume

13

Issue

8

fYear

2001

Firstpage

785

Lastpage

787

Abstract

A unique laser filtering technique of a gain-clamped erbium-doped fiber amplifier based on ring-laser cavity is demonstrated. The filtering mechanism is achieved using a single fiber Bragg-grating, which also functions as a laser feedback reflector at the output end of the amplifier. This new design has low noise and most important, shows up to 98% reduction in output laser intensity as compared with a previous design studied earlier. An optimum result with gain and noise around 25 and 3.5 dB, respectively, obtained for a dynamic range of input signal power up to -8 dBm.

Keywords

Bragg gratings; erbium; laser cavity resonators; laser feedback; laser noise; optical fibre amplifiers; optical filters; ring lasers; Er-doped all-optical gain-clamped fiber-ring lasing amplifier; filtering mechanism; input signal power; laser feedback reflector; laser filtering technique; output laser intensity; ring-laser cavity; single fiber Bragg-grating; Dynamic range; Erbium-doped fiber amplifier; Erbium-doped fiber lasers; Filtering; Laser feedback; Laser noise; Noise reduction; Optical design; Output feedback; Ring lasers;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.935803

Filename

935803