Light emitting slot-waveguide device
AssigneeCornell Research Foundation, Inc.
InventorsCarlos Angulo Barrios, Michal Lipson
Life of this patent
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Abstract
An electroluminescent material slot waveguide generates light in response to current injection. In one embodiment, the waveguide is formed as part of an optical resonator, such as ring resonator waveguide or distributed Bragg reflector with an anode and cathode for electrical stimulation. A compact, electrically-driven resonant cavity light emitting devices (RCLED) for Si microphotonics may be formed. Several different rare-earth ions, such as erbium, terbium and ytterbium, can be used to dope SiO2 in order to emit light at different wavelengths.
Claims23
A light emitting device comprising:
- a slot waveguide formed as a resonator, wherein the slot waveguide further comprises:
- a first material and a second material having a high index of refraction;
- a slot formed between the first and second materials, the slot containing an electroluminescent material, and having a low index of refraction wherein an optical field is highly confined within the slot;
- and
- electrodes electrically coupled to inject current into the electroluminescent material.
A light emitting device comprising:
- a slot waveguide formed as a resonator, wherein the slot waveguide further comprises:
- a first and a second material formed of Si;
- a slot formed between the first and second material, the slot containing rare earth ion doped SiO2 wherein an optical field is highly confined within the slot;
- and
- means for causing current to be injected into the rare earth ion doped SiO2.
A light emitting device comprising:
- a slot waveguide formed as a resonator, wherein the slot waveguide further comprises:
- a first and a second layer of material, both having a high index of refraction;
- an electroluminescent slot formed between the first and second layers of material, the slot having a low index of refraction wherein an optical field is highly confined within the slot;
- and
- electrodes for causing current to be injected into the electroluminescent material.
A light emitting device comprising:
- a slot waveguide formed as a resonator, wherein the slot waveguide further comprises:
- a first and a second layer of material, both having a high index of refraction;
- an electroluminescent slot formed between the first and second layers of material, the slot having a low index of refraction;
- and
- electrodes for causing current to be injected into the electroluminescent material, wherein the electrodes comprise a conductively doped anode slab coupled to the first layer, and a conductively doped cathode slab coupled to the second layer, wherein the slot and the first and second layers are coplanar rings of silicon.
Dependencies are inferred from the claim text.