Method of fabricating optical waveguides for the mid-...

C - Chemistry – Metallurgy – 03 – C

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117/64, 88/97.2

C03C 21/00 (2006.01) C03C 3/32 (2006.01) C03C 13/04 (2006.01) G02B 6/10 (2006.01)

Patent

CA 1267575

Abstract A method of fabricating optical waveguides for the mid-infrared spectrum, consisting of masking the surfaces of a suitable substrate to expose only those regions where the optical guide is to be fabricated, and immersing the masked substrate into a fused salt of a doping compound consisting of a cation bonded to a fluoride, at high temperature, to permit doping of the substrate. Ionic exchange in remaining regions of the substrate is prevented. An electric field may be applied to accelerate the doping process.

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