Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Making named article
Patent
1981-01-27
1983-03-08
Newsome, John H.
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Making named article
427 431, 427 541, 427162, B05D 306
Patent
active
043761607
ABSTRACT:
A method for making monolithic optical circuits, with related optical devices as required or desired, on a supporting surface (10) consists of coating the supporting surface with reflecting metal or cladding resin, spreading a layer of liquid radiation senstivie plastic (12) on the surface, exposing the liquid plastic with a mask (14) to cure it in a desired pattern of light conductors (16, 18, 20), washing away the unexposed liquid plastic, and coating the conductors thus formed with reflective metal or cladding resin. The index of refraction for the cladding (22) is selected to be lower than for the conductors so that light in the conductors will be reflected by the interface with the cladding. For multiple level conductors, as where one conductor must cross over another, the process may be repeated to fabricate a "bridge" with columns (24, 26) of conductors to the next level, and conductor (28) between the columns. For more efficient transfer of energy over the bridge, faces at 45.degree. may be formed to reflect light up and across the bridge.
REFERENCES:
Aeby, "Guided Wave Optical Systems & Devices II", Spie, vol. 176 (1979), pp. 155-160.
Takato et al., "Applied Optics", vol. 20, No. 8, pp. 1397-1401, Apr. 15, 1981.
California Institute of Technology
Newsome John H.
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