Optical waveguide device including a buffer layer of a thickness

Details Optical waveguide device including a buffer layer of a thickness Optical waveguide device including a buffer layer of a thickness

1997-01-16

1998-06-09

Healy, Brian

Optical waveguides

Integrated optical circuit

385 2, 385 3, 385 39, 385 40, 385131, 385132, G02B 612

Patent

active

057648220

ABSTRACT:
In an optical waveguide device which is typically for use as a waveguide modulator or switch and comprises a substrate exhibiting an electrooptic effect, an input and an output waveguide, first and second phase shift waveguides, a dielectric buffer layer on the substrate and the input, the output, and the phase shift waveguides, and a signal electrode and a ground electrode on the buffer layer to overlie on the phase shift electrodes and which may further comprise an additional ground electrode to form a CPW structure rather than an ASL or an ACPS structure, the buffer layer has a thickness which decreases continuously or stepwise from an outer edge to an inner edge of each of the first and the second waveguides. Preferably, a ratio of a thin thickness at the inner edges to a predetermined thickness at the outer edges and outwardly thereof is between 0.25 to 0.9. Another ratio of a width of the signal electrode to a gap between the signal electrode and the ground electrode on the second waveguide is between 1 and 0.1.

REFERENCES:
patent: 4035058 (1977-07-01), Papuchon
patent: 4775208 (1988-10-01), Robinson et al.
patent: 4944838 (1990-07-01), Koch et al.
patent: 5339369 (1994-08-01), Hopfer et al.
patent: 5396363 (1995-03-01), Valette
patent: 5444805 (1995-08-01), Mayer
patent: 5473710 (1995-12-01), Jaw et al.
patent: 5473711 (1995-12-01), Hakogi et al.
patent: 5479552 (1995-12-01), Kitamura et al.
patent: 5502780 (1996-03-01), Madabhushi
patent: 5598490 (1997-01-01), Hakogi et al.
patent: 5661830 (1997-08-01), Nishimoto
M. Rangaraj, "A Wide-Band Ti:LiNbO.sub.3 Optical Modulator with a Conventional Coplanar Waveguide Type Electrode", IEEE Photonics Technology Letters, vol. 4, No. 9, Sep. 1992, pp. 1020-1022.

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