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US 4,901,123 AGranted
Superluminescent diode
AssigneeNippon Telegraph and Telephone Corporation
InventorsYoshio Noguchi, Haruo Nagai, Kazumasa Takada, Juichi Noda
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AssigneeNippon Telegraph and Telephone Corporation
InventorsYoshio Noguchi, Haruo Nagai, Kazumasa Takada, Juichi Noda
Estimating the term…
According to this invention, a superluminescent diode includes a current injection portion having a current injection electrode formed adjacent to a first end face, a light-absorption portion contiguous with the current injection portion; and a waveguide continuously formed to extend from the current injection portion to the light-absorption portion. The waveguide is constituted by an active layer and a member which completely buries the active layer, has a bandgap larger than that of the active layer, and is formed of a material having a small refractive index. The waveguide of the current injection portion is linearly formed to be perpendicular to the first end face. The waveguide of the light-absorption portion has an end portion for guiding reflected light in a direction different from a propagation direction of light propagating through the waveguide.
A superluminescent diode comprising:
Dependencies are inferred from the claim text.