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US 6,788,838 B2Granted
Photon transistors
AssigneeSeng-Tiong Ho
InventorSeng-Tiong Ho
Life of this patent
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Abstract
A light transfer device is provided that includes a first light pathway having a first input and a first output and a second light pathway having a second output. The second light pathway is coupled to the first light pathway, and light from the first input is transferable between the first and second light pathways. An active medium is positioned along one of the first and second light pathways, and the active medium is capable of receiving optical energy that modifies the active medium so that the active medium controls the transfer of light between the first and second pathways.
Claims47
A method or metallizing a waveguide structure, comprising:
- growing a silicon dioxide layer;
- spin-coating a layer of benzocyclobutene;
- baking the benzocyclobutene;
- etching the benzocyclobutene to reveal the silicon dioxide;
- etching the silicon dioxide;
- filling the resulting void with silicon dioxide;
- spin-coating a layer of benzocyclobutene;
- depositing a layer of silicon dioxide;
- patterning and curing a layer of photoresist;
- etching the uncured photoresist, silicon dioxide and benzocyclobutene;
- patterning and curing a photoresist for a metal contact pattern;
- etching the uncured photoresist;
- and
- depositing the metal.
11 more elements
A light transfer device comprising:
- a first light pathway having a first input and a first output;
- a second light pathway baying a second input and a second output, said second light pathway at least partially aligned with said first light pathway, wherein light from said first input is transferable between said first and second light pathways;
- a third light pathway interposed between the first and the second light pathways, an active medium positioned along said third light pathway, wherein the active medium is capable of receiving electrical energy or light that modifies a gain property or a loss property or the active medium to control or gate the transfer of light between the first and second pathways.
A light transfer device comprising:
- a first light pathway having a first input and a first output;
- a second light pathway having a second input and a second output, said second light pathway at least partially aligned with said first light pathway, wherein light from said first input is transferable between said first and second light pathways;
- an active medium positioned along at least one of said first and second light pathways, wherein said active medium is capable of receiving light that modifies a gain property or a loss property of said active medium, to control or gate the transfer of light between said first and second pathways;
- and
- a third light pathway having a third input and capable of receiving light, the third light pathway coupling with an output of the first or the second light pathway to modify a gain property or a loss property of the active medium.
2 more elements
A light transfer device comprising:
- a first light pathway having a first input and a first output;
- a second light pathway having a second input and a second output, said second light pathway at least partially aligned with said first light pathway, wherein light from said first input is transferable between said first and second light pathways;
- an active medium positioned along at least one of said first and second light pathways, wherein said active medium is capable of receiving light that modifies a gain property or a loss property of said active medium to control or gate the transfer of light between said first and second pathways;
- and
- a third light pathway having a third input and capable of receiving light, the third light pathway coupling with an input of the first or the second light pathway to modify a gain property or a loss properly of the active medium.
2 more elements
A light transfer device comprising:
- a first light pathway having a first input and a first output;
- a second light pathway having a second input and a second output, said second light pathway at least partially aligned with said first light pathway, wherein light from said first input is transferable between said first and second light pathways;
- a first active medium positioned along at least one of said first and second light pathways, wherein said active medium is capable of receiving electrical energy or light that modifies a gain property or a loss property of said active medium to control or gate the transfer of light between said first and second pathways;
- a third light pathway having a third input and a third output, at least partially aligned with said first light pathway;
- a second active medium positioned along at least one of said first and third light pathways, wherein said active medium is capable of receiving electrical energy or light that modifies said active medium to control or gate the transfer of light between said first and third pathways and
- a fourth light pathway having a fourth input at least partially aligned with an output of the first tight pathway, wherein said fourth light pathway is capable of receiving light that modifies a gain property or a loss property of the first active medium.
3 more elements
A light transfer device comprising:
- a first light pathway having a first input and a first output;
- a second light pathway having a second input and a second output, said second light pathway at least partially aligned with said first light pathway, wherein light from said first input is transferable between said first and second light pathways;
- a third light pathway interposed between the first and the second light pathways, an active medium positioned along the third light pathway, wherein the active medium is capable or receiving electrical energy that modifies a gain property or a loss property of the active medium to control or gate the transfer of light between the first and second pathways.
A light transfer device comprising:
- a first light pathway having a first input and a first output;
- a second light pathway having a second input and a second output, said first and second light pathways intersecting at an intersecting point;
- a third light pathway spaced from said first light pathway and said second light pathway, said third light pathway including an angled portion shaped to match a side portion of said intersecting first and second light pathways, the angled portion of the third light pathway being movable between at least a first position relatively near both said first light pathway and said second light pathway, and a second position relatively far from said first and said second light pathways, to allow light to be transferred between said first and second light pathways.
A light transfer device comprising:
- a first light pathway having a first input and a first output;
- a second light pathway having a second output, said second light pathway at least partially aligned with said first light pathway, wherein light from said first input is transferable between said first and second light pathways;
- a third light pathway positioned adjacent said first or second light pathways, said third light pathway having a third input and configured in a circuitous shape to function us an intensity-increasing resonator, the third light pathway having an active medium positioned along at least one of said first and second light pathways, wherein the active medium is capable of receiving light that modifies a gain property or a loss property of the active medium to control or gate the transfer of light between the first and second pathways;
- a first beam splitter between said first and second pathways, the first beam splitter operative to split light from the first input between said first and second pathways;
- and
- a second beam splitter between said first and second pathways, the second beam splitter operative to combine light from said first and second pathways and channel said light to said first and second outputs.
3 more elements
Dependencies are inferred from the claim text.