Suppression of discrete cladding mode resonances in fibre slanted Bragg gratings for gain equalisation.
Opt Express
; 14(4): 1388-94, 2006 Feb 20.
Article
em En
| MEDLINE
| ID: mdl-19503462
In a slanted Bragg grating, coupling between the fundamental guided mode and the counterpropagative cladding modes result in discrete resonances in the transmission spectrum. These resonances are a drawback when Slanted Bragg Gratings are used for gain flattening of fibres amplifiers. A new method based on a chemical etching of the cladding is proposed leading to an overlap of the resonances and a reduction of the amplitude of the modulation. This method can be applied for any value of photo induced modulation amplitude in the SBG.
Buscar no Google
Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2006
Tipo de documento:
Article