METHOD OF PRODUCING INTEGRATED OPTICAL CIRCUIT ON GLASS SUBSTRATE WITH HORN-SHAPED WAVEGUIDE Russian patent published in 2014 - IPC G02B6/13 

FIELD: physics.

SUBSTANCE: according to the method, one of the planes of a glass substrate is coated with a masking layer having openings for forming an integrated optical circuit with a channel waveguide for radiation input. A needle-shaped cathode is placed on the opposite plane of the glass substrate, opposite the channel waveguide at the edge of the substrate. The glass substrate is brought into contact with a molten salt containing ions that are capable of increasing the refraction index of glass during diffusion. A stimulating voltage is applied between the needle-shaped cathode and the molten salt with an anode.

EFFECT: providing a channel waveguide in form of a horn with a varying shape for easy input of optical radiation.

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