Waveguide coupling device including tapered waveguide with a par

Details Waveguide coupling device including tapered waveguide with a par Waveguide coupling device including tapered waveguide with a par

1995-08-02

1996-10-22

Bovernick, Rodney B.

Optical waveguides

With optical coupler

Particular coupling structure

385 29, 385 49, 385 50, G02B 626

Patent

active

055685790

ABSTRACT:
A waveguide device comprising a cladding layer having a refractive index n.sub.cl, a first waveguide having a refractive index n.sub.g (n.sub.g >n.sub.cl) formed on said cladding layer, and a second waveguide having a refractive index n.sub.cp (n.sub.cp >n.sub.g) formed on said first waveguide, wherein the sectional shape of said second waveguide has a tapered structure in which a layer thickness of said second waveguide reduces as the distance from the end face of the waveguide increases, and a tapering angle .THETA. in said tapered structure satisfies the following conditions:

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