Directional optical waveguide couplers

Details Directional optical waveguide couplers Directional optical waveguide couplers

1975-12-24

1977-04-19

Smith, Alfred E.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

350 96C, 350 96WG, G02B 514, H01J 516, H01J 3912

Patent

active

040190510

ABSTRACT:
Directional optical waveguide couplers for use with planar-form optical waveguides or optical fiber waveguides are disclosed. In the coupler arrangements, light energy propagating in a direction of interest in the core of a cladded optical waveguide is first coupled into a selected region of the cladding by a mode coupling means and then coupled out of the selected cladding region by a branching optical waveguide or power tap for subsequent conversion to a representative electrical signal. The selected region of the cladding is isolated from spurious cladding modes by a pair of stripper-absorber means to ensure that the coupled out light energy is derived only from the core-guided modes propagating in the direction of interest.

REFERENCES:
patent: 3558213 (1971-01-01), Marcatili
patent: 3813141 (1974-05-01), Miller
patent: 3850503 (1974-11-01), Riseberg
patent: 3918794 (1975-11-01), Milton
patent: 3923377 (1975-12-01), Milton
patent: 3931518 (1976-01-01), Miller
patent: 3936631 (1976-02-01), Muska

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