Photoinduced grating in b2o3 containing glass

G - Physics – 02 – B

Patent

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Details

G02B 5/18 (2006.01) C03B 19/14 (2006.01) C03B 37/018 (2006.01) C03C 3/06 (2006.01) C03C 3/076 (2006.01) C03C 4/04 (2006.01) C03C 13/04 (2006.01) G02B 6/12 (2006.01) G02B 6/124 (2006.01)

Patent

CA 2117682

It has been demonstrated that B containing glasses are sensitive to radiation in the band 225-275 nm and, therefore, B2O3 glasses are particularly adapted to receive refractive index modulation,e.g., to make reflection gratings. Glasses containing SiO2 and B2O3 are particularly suitable when the grating is to be localised in the cladding of a fibre. Glasses containing SiO2, GeO2, and B2O3 are suitable when the grating is in the path region of a waveguide, e.g., in the core of a fibre.

Il a été démontré que des verres contenant du B sont sensibles au rayonnement dans la bande comprise entre 225 et 275 nm, et, en conséquence, des verres contenant du B2O3 sont particulièrement adaptés à recevoir une modulation d'indice de réfraction, par exemple pour fabriquer des réseaux de réflexion. Des verres contenant du SiO2 et du B2O3 peuvent particulièremnt être utilisés lorsque le réseau doit être situé dans la gaine d'une fibre. Des verres contenant du SiO2, GeO2 et B2O3 peuvent être utilisés lorsque le réseau se situe dans la région du parcours d'un guide d'onde, par exemple dans le coeur d'une fibre.

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