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US 2010/0140632 A1Published application
Multi-Electrode Light Emitting Device
AssigneeJDS Uniphase Corporation
InventorPierre Doussiere
Life of this patent
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Abstract
The invention relates to a broad-band light emitting diode having an active layer composed of a plurality of light emission regions of differing materials for emitting light at a plurality of wavelengths, wherein each of the emission regions of the active layer is electrically controlled by a separate electrode for providing a broad-band emission or optical gain with a multi-point control of its spectral profile.
Claims12
A light emitting diode (LED), comprising:
- a semiconductor heterostructure;
- a waveguide formed in said semiconductor heterostructure and having an output facet;
- a plurality of light emission regions of said semiconductor heterostructure disposed along the waveguide for emitting light thereinto, wherein each light emission region has a material composition for emitting light that is spectrally centered at a different light emission wavelength than other light emission regions;
- and,
- a plurality of electrical contacts for electrically pumping each of the light emission regions separately, so as to produce individually controllable light emission at each of the light emission wavelengths.
2 more elements
Dependencies are inferred from the claim text.