Optical waveguides – With optical coupler – Switch
Patent
1995-06-07
1997-08-05
Lee, John D.
Optical waveguides
With optical coupler
Switch
385 45, 385131, G02B 635
Patent
active
056550383
ABSTRACT:
A method for producing a cascaded optical space switch and a cascaded optical space switch manufactured with this method are shown being made of many optical branches produced on a single substrate. Here a method is used for growing active, i.e., controllable light amplifying or light absorbing waveguide areas, which can produce locally restrictable different layer thicknesses and/or material compositions of the grown active layers, during the same operation. The number and location of active (1, 3) and passive (2, 4) waveguide areas can be determined by the configuration of areas (M), e.g., masked with SiO.sub.2, prior to the actual growth.
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ALCATEL N.V.
Lee John D.
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