Patent ID: 7548672

Claim:
A fiber-based light source device, comprising: a plurality of first light-emitting devices for emitting a plurality of first lights; a plurality of second light-emitting devices for emitting a plurality of second lights; a plurality of third light-emitting devices for emitting a plurality of third lights; a plurality of first directional couplers for coupling the first lights in their order so as to generate a first coupled light; a plurality of second directional couplers for coupling the second lights in their order so as to generate a second coupled light; a plurality of third directional couplers for coupling the third lights in their order so as to generate a third coupled light; a fourth directional coupler for coupling the first coupled light and the second coupled light so as to generate a fourth coupled light; and a fifth directional coupler for coupling the third coupled light and the fourth coupled light so as to generate an output light source.