Optical coupler

Details Optical coupler Optical coupler

1985-10-21

1988-05-17

Davie, James W.

350413, G02B 632

Patent

active

047446200

ABSTRACT:
An optical coupler comprises a lens for coupling a light source and an optical fiber wherein the lens comprises a transparent column in which a refractive index n(r) at a distance r from an optical axis is expressed by n.sup.2 (r)=n.sub.0.sup.2 {1-(gr).sup.2 +h.sub.4 (gr).sup.4 +h.sub.6 (gr).sup.6 +h.sub.8 (gr).sup.8 + . . . }, and satisfies the following conditions when Sf=g/0.3:

REFERENCES:
patent: 4634233 (1987-01-01), Usami et al.
patent: 4639094 (1987-01-01), Aono
patent: 4640585 (1987-02-01), Nojiri
patent: 4643535 (1987-02-01), Ichikawa et al.
patent: 4647159 (1987-03-01), Baba

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