Method to reduce light propagation losses in optical glasses and

Details Method to reduce light propagation losses in optical glasses and Method to reduce light propagation losses in optical glasses and

1992-01-02

1993-08-10

Healy, Brian

Optical waveguides

Planar optical waveguide

385141, 385142, 385 14, 65 41, 65 17, 501 11, 501 94, 501100, 501153, 501154, 501900, G02B 600, C03B 2500, C03C 300

Patent

active

052356620

ABSTRACT:
The present invention provides a method of annealing optical glass layers, said method comprising the step of heating glass layers having an area greater than 0.01 cm.sup.2 to a temperature of between about 350 deg. C. and 1000 deg. C. in less than 10 minutes. The upper limit of the glass area that can be treated is limited only by the size of the quartz chamber. Current state-of-the-art chambers can accomodate glass areas of about 0.01 cm.sup.2 to about 324 cm.sup.2. According to another aspect of the invention, there is also provided an optical waveguide glass layer, treated according to the method of this invention, disposed on an integrated optical device.

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