Electronic circuit board with internal optically transmissive la

Details Electronic circuit board with internal optically transmissive la Electronic circuit board with internal optically transmissive la

1993-12-01

1995-04-18

Ullah, Akm E.

Optical waveguides

Planar optical waveguide

Thin film optical waveguide

385129, G02B 600, G02B 636

Patent

active

054085683

ABSTRACT:
A method of constructing an electronic circuit assembly comprises forming a circuit board having first and second sets of circuit layers and an internal optically transmissive layer, sandwiched between the first and second sets of circuit layers. Holes are formed through the first set of circuit layers by excimer laser drilling, the holes extending as far as the optically transmissive layer without passing through that layer. Electronic devices are mounted on the circuit board over said holes, at least some of the devices including optical receiver and/or transmitter means for receiving/transmitting optical signals from/to the optically transmissive layer. An optical fibre is coupled to the optically transmissive layer. The optically transmissive layer thus acts as a bus interconnecting the devices.

REFERENCES:
patent: 4585299 (1986-04-01), Strain
patent: 4762382 (1988-08-01), Husain et al.
patent: 4799749 (1989-01-01), Borner et al.
patent: 4809358 (1989-02-01), Fernstrom
patent: 4830447 (1989-05-01), Kamiyama et al.
patent: 4834480 (1989-05-01), Baker et al.
patent: 4893162 (1990-01-01), Gentner et al.
patent: 5061029 (1991-10-01), Ishikawa
patent: 5230030 (1993-07-01), Hartman et al.

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