Aluminum doped optical fiber

Details Aluminum doped optical fiber Aluminum doped optical fiber

G - Physics

02

B

G02B 6/02 (2006.01) G01K 11/32 (2006.01)

Patent

CA 2712735

According to one example of the invention an optical fiber comprises: (i) a core (12) consisting of Al doped silica having a first index of refraction n1; (ii) at least one silica based cladding (14) surrounding the core and having a second index of refraction n2, such that n1>n2; (iii) a hermetic carbon based coating (16) surrounding said cladding, said hermetic coating being 300nm -1000 nm thick; and (iv) a second coating (18) surrounding said hermetic coating, said second coating being 5 µm to 80 µm thick.

Selon un exemple de l'invention, une fibre optique comprend : (i) un cur (12) constitué de silice dopée à l'aluminium qui possède un premier indice de réfraction n1 ; (ii) au moins un gainage (14) à base de silice qui entoure le cur et qui possède un second indice de réfraction n2, afin que n1> n2 ; (iii) un revêtement (16) hermétique à base de carbone qui entoure ledit gainage, ledit revêtement hermétique ayant une épaisseur comprise entre 300 nm et 1000 nm; et (iv) un second revêtement (18) qui entoure ledit revêtement hermétique, ledit second revêtement ayant une épaisseur comprise entre 5 µm à 80 µm.

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