Tapered optical waveguide, waveguide type optical head using sam

Details Tapered optical waveguide, waveguide type optical head using sam Tapered optical waveguide, waveguide type optical head using sam

1989-03-30

1990-07-24

Lee, John D.

350 9615, 350 9618, G02B 612

Patent

active

049431293

ABSTRACT:
A tapered optical waveguide is disclosed, which comprises a substrate having a plane surface for forming a waveguide layer, whose refractive index is higher than that of the substrate, which substrate is transparent with respect to guided light, and a waveguide layer formed on the plane surface of the substrate, in which light taken out on the substrate side is focused so as to form a small spot at a position distant from the interface between the waveguide layer and the substrate.

REFERENCES:
patent: 4006964 (1977-02-01), Mahlein et al.
patent: 4262993 (1981-04-01), Burns et al.
patent: 4372641 (1983-02-01), Johnson et al.
patent: 4445759 (1984-05-01), Valette
patent: 4652290 (1987-03-01), Cho et al.
R. Ulrich et al., "Geometrical Optics in Thin Film Li ght Guides", Applied Optics, vol. 1D, No. 9, Sep. '71, pp. 2077-2085.

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