Method of fabricating low-loss channel optical waveguides

Details Method of fabricating low-loss channel optical waveguides Method of fabricating low-loss channel optical waveguides

1975-10-30

1977-05-10

Lindsay, Jr., Robert L.

Glass manufacturing

Processes

Reshaping or surface deformation of glass preform

65 2, 65DIG4, 65DIG7, 264 1, 313 95, 350 96WG, G02B 514, C03B 3200

Patent

active

040226026

ABSTRACT:
A material is selected which is capable of propagating light energy and is lso highly absorptive of light energy within a determinable wavelength region. A laser beam which includes such wavelength region in its output energy is focused on the surface of the selected material in a sufficent concentration to cause partial evaporation of its surface and relative linear movement is given effect between the laser beam focal point and the selected material in a focal plane of the laser beam. The rate of such relative linear movement is controlled to produce grooves in the surface of the selector material by absorption of laser energy, thereby defining optical waveguide guiding paths immediately beneath the grooves due to localized change of index of refraction.

REFERENCES:
patent: 3542536 (1970-11-01), Flam et al.
patent: 3756799 (1973-10-01), Neuroth
patent: 3912478 (1975-10-01), Presby

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