Fishing – trapping – and vermin destroying
Patent
1993-04-29
1995-06-13
Kunemund, Robert
Fishing, trapping, and vermin destroying
437133, 148DIG95, H01L 2120
Patent
active
054242428
ABSTRACT:
A method for making an optical amplifier according to which a stack of the following layers is made by epitaxy: a first optical guiding layer; a first chemical attack barrier layer; a second optical guiding layer; a second chemical attack barrier layer; an active layer; a confinement layer; and a contact layer. Then at least one amplifier element followed by an optical guide located beneath this amplifier element are etched in these layers. The method can be applied to the making of optoelectronic devices such as modulators, change-over switches, distributors, etc.
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Electronics Letters, vol. 25, No. 16, Title "Polarisation-independent optical amplifier with buried facets" p. 1048 N. A. Olsson et al, 3 Aug. 1989.
Electronics Letters, vol. 24, No. 20, Sep. 29, 1988; pp. 1275-1276, Title "1.3 mum GalnAsp near-travelling-wave laser amplifiers made by combination of angled facets and antireflection coatings", C. E. Zah et al.
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Blondeau Robert
Bourbin Yannick
Rondi Daniel
"Thomson-CSF"
Fleck Linda J.
Kunemund Robert
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