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Integrated-optic-circuit

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Integrated optic circuit

Details

Inventors: Yoshida, Ken-ichi; Nishiwaki, Yoshikazu;
Assignee: Sumitomo Electric Industries, Ltd. (Osaka, JP)
Primary Examiner: Sikes; William L.
Assistant Examiner: Ullah; Akm E.
Attorney, Agent or Firm: Cushman, Darby & Cushman

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.

DETAILED DESCRIPTION An object of the present invention is to provide an integrated optic circuit which is produced easily and at a low cost.
According to the present invention wherein only the functional block of high performance and high degree of integration of the integrated optic circuit is formed of a high cost and high performance substrate material such as InP or GaAs while the other portions of a relatively low degree of integration such as the bent waveguides are formed of a low cost substrate material.
It is possible to produce at a low cost an integrated optic circuit of a large size in which the distance between waveguides to be coupled to optical fibers can be sufficiently large.

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