Title :
Broadband chirped fibre Bragg filters for pump rejection and recycling in erbium doped fibre amplifiers
Author :
Farries, M.C. ; Ragdale, C.M. ; Reid, D.C.J.
Author_Institution :
GEC Marconi Mater. Technol. Ltd., Towcester, UK
Abstract :
Broadband chirped fibre Bragg filters centred at 980 nm and 1480 nm with reflectivities as high as 99% and reflection bandwidths up to 22 run are reported. The filters have a low transmission loss of <0.5 dB between 1.51 and 1.56 mu m and their application to reject and recycle unabsorbed pump light from a fibre amplifier is demonstrated.
Keywords :
diffraction gratings; distributed Bragg reflector lasers; erbium; fibre lasers; integrated optics; optical filters; optical losses; optical pumping; 0.5 dB; 1.51 to 1.56 micron; 1480 nm; 980 nm; Er doped fibre amplifiers; broadband chirped filters; fibre Bragg filters; low loss design; pump rejection; pump-recycling; reflection bandwidths; reflectivities; transmission loss; unabsorbed pump light;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19920307
