Wave-guiding structure with lasing properties

Details Wave-guiding structure with lasing properties Wave-guiding structure with lasing properties

H - Electricity

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H01S 3/17 (2006.01) C03B 37/018 (2006.01) C03C 3/095 (2006.01) C03C 4/00 (2006.01) C03C 13/04 (2006.01) H01S 3/06 (2006.01) H01S 3/067 (2006.01) H01S 3/16 (2006.01)

Patent

CA 2082940

Optical wave guides, e.g. fibres, for use as photonic amplifiers have a path region partly or, preferably, wholly composed as a silica/germania glass with 0.1 to 5000 ppm mole of Er3+ as a lasing additive and alumina to adjust the bandwidth, the Ge:Al mole ratio being more than 2.8, e.g. 1:0.001 to 0.25. it is surprising that low amounts of alumina have a useful and significant effect on the lasing bandwith whereby frequency division multiplex is facilitated.

Guides d'onde optique, p. ex. fibres, destinés à servir d'amplificateurs photoniques. Comprennent une région de trajet composée en partie ou, de préférence, entièrement de verre de silice/oxyde de germanium avec 0,1 à 5 000 ppm (mole) d'Er3+ comme additif de lasage et d'alumine pour régler la largeur de bande, le rapport molaire Ge:Al étant supérieur à 2,8, p. ex. de 1:0,001 à 0,25. Il est surprenant que de faibles quantités d'alumine aient un effet utile et sensible sur la largeur de bande de lasage et facilitent ainsi le multiplexage en fréquence.

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