Patent
1979-04-19
1980-09-23
Levy, Stewart J.
350 9612, 350 9614, G02B 514
Patent
active
042239770
ABSTRACT:
The invention relates to an integrated optical circuit intended to separate a plurality of optical waves of different wavelengths, comprising at least one basic cell formed of elements integrated on the same plate: a directional coupler adjusted to divide between two output branches the incident energy in one branch of the coupler; each of the output branches comprising a phase-shifter, an engraved network which reflects an optical carrier of a definite wavelength, a second phase-shifter; and a junction between the two output branches. The phase-shifters are adjusted so that the waves reflected by the networks are in phase-opposition at the input to the coupler and recombine in the fourth branch of the coupler, and so that the waves not reflected by the networks are in phase in the junction.
REFERENCES:
patent: 4067641 (1978-01-01), Holton
patent: 4070094 (1978-01-01), Martin
patent: 4128300 (1978-12-01), Stotts et al.
patent: 4142775 (1979-03-01), Ramaswamy et al.
Papuchon Michel
Puech Claude
"Thomson-CSF"
Levy Stewart J.
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