41-nm 3-dB gain-band optical amplifier using an Er-doped core and Sm-doped inner-cladding fiber without external filters

Author

Kim, Seungtaek ; Ryu, Uh-Chan ; Oh, K.

Author_Institution

Dept. of Inf. & Commun., Kwangju Inst. of Sci. & Technol., South Korea

Volume

12

Issue

8

fYear

2000

Firstpage

986

Lastpage

988

Abstract

A new fiber structure optical fiber amplifier was reported where the core was doped with erbium (Er) and the inner-cladding was doped with samarium (Sm). Feasibility of gain control by evanescent wave interaction with an absorbing material in the inner-cladding was experimentally demonstrated. The optical amplifier using the proposed fiber resulted in the gain variation between gain peak and valley less than 2.5 dB without using external gain equalizing filters.

Keywords

chemical vapour deposition; erbium; gain control; laser beams; laser noise; optical fibre amplifiers; optical fibre cladding; optical fibre fabrication; optical variables control; samarium; 1.5 mum; 1.53 mum; 3 dB; Er-doped core fiber; Sm-doped inner-cladding fiber; absorbing material; core; evanescent wave interaction; external gain equalizing filters; fiber structure optical fiber amplifier; gain control; gain peak; gain variation; gain-band optical amplifier; inner-cladding; optical amplifier; Erbium; Gain control; Optical amplifiers; Optical fiber amplifiers; Optical fibers; Optical filters; Optical surface waves; Samarium; Semiconductor optical amplifiers; Stimulated emission;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.867983

Filename

867983