Optical structure

Optical waveguides – With optical coupler – Particular coupling structure

Reexamination Certificate

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Details

C385S037000, C372S094000, C372S096000, C372S097000, C372S098000, C372S102000

Reexamination Certificate

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07376309

ABSTRACT:
An optical structure comprising an optical resonator is provided. The optical resonator comprises a first set of nested closed optical regions, forming a distributed feedback resonator structure with a direction of radially alternating optical refractive index, and a second set of nested optical regions, forming a distributed feedback resonator structure with a direction of radially alternating optical refractive index. Each optical region of the second set is interrupted by a first gap region with a lower refractive index, wherein the first gap regions substantially overlap in the direction of radially alternating optical refractive index. The first set is arranged nested within the second set and the optical structure further comprises a first optical waveguide optically coupled to the optical resonator via a first waveguide portion reaching into the first gap regions and being arranged coplanar to the optical resonator.

REFERENCES:
patent: 4743083 (1988-05-01), Schimpe

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