Integrated optic circuit
AssigneeSumitomo Electric Industries, Ltd.
InventorsKen-ichi Yoshida, Yoshikazu Nishiwaki
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Abstract
An integrated optic circuit according to the present invention is produced as a hybrid integrated optic circuit using two or more kinds of substrates in which only the portion of high performance and high degree of integration is formed of the substrate of a material of high cost and high performance while the other portion of lower degree of integration is formed of the substrate of a material of low cost. Therefore, in the integrated optic circuit according to the present invention, the distance between the waveguides to be coupled with optical fibers can be larger than the outside diameter of the optical fiber, and the integrated optic circuit according to the present invention can be produced easily at low cost.
Claims10
An integrated optic circuit comprising:
- an optical functional device comprising a first substrate made of a first material and, a plurality of first waveguides formed on said first substrate,
- a base portion comprising a second substrate made of a second material different from said first material, said second substrate having a recess for receiving said first substrate and, a plurality of second waveguides formed on said second substrate, each of said second waveguides having an inner end and a distal end, and
- a plurality of optical fibers, each of said fibers having a diameter D,
- wherein each waveguide inner end is coupled by one of said first waveguides and each waveguide distal end is coupled to an end of one of said optical fibers, said first waveguides are spaced apart a distance less than D and, said second waveguides at said distal end are spaced apart a distance greater than D.
Dependencies are inferred from the claim text.