Optical coupler having improved efficiency

Details Optical coupler having improved efficiency Optical coupler having improved efficiency

1975-10-30

1978-06-27

Corbin, John K.

G02B 514

Patent

active

040971171

ABSTRACT:
The optical efficiency, with which a coupling portion of a fiber-optic can be coupled by evanescent fields to a planar optical waveguide through a phase-matching diffraction grating on the surface of the planar optical waveguide, is increased by deforming the coupling portion so that it is a negative replica of the undulating surface of the diffraction grating.

REFERENCES:
patent: 2186143 (1940-01-01), Neugass
patent: 3565978 (1971-02-01), Folger et al.
patent: 3819249 (1974-06-01), Borner et al.
patent: 3871743 (1975-03-01), Fulenwider
patent: 3912363 (1975-10-01), Hammer
patent: 3931518 (1976-01-01), Miller
patent: 4007978 (1977-02-01), Holton
Ash et al., Article in IBM Technical Disclosure Bulletin, Feb. 1971, pp. 2529 & 2530 cited.

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