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US 11,678,091 B2Granted
Reduced crosstalk photonic switch
AssigneeOpenLight Photonics, Inc.
InventorJonathan Edgar Roth
Life of this patent
Estimating the term…
Abstract
Described are various configurations of reduced crosstalk optical switches. Various embodiments can reduce or entirely eliminate crosstalk using a coupler that has a power-splitting ratio that compensates for amplitude imbalance caused by phase modulator attenuation. Some embodiments implement a plurality of phase modulators and couplers as part of a dilated switch network to increase overall bandwidth and further reduce potential for crosstalk.
Claims20
A method for propagating light using an optical switch, the method comprising:
- receiving a first light and a second light using one or more waveguides of the optical switch, the first light at a first optical power and the second light at a second optical power that is lower than the first optical power due to attenuation, the optical switch having a physical shape that compensates for the attenuation;
- forming compensated light using the physical shape of the optical switch;
- and
- transmitting the compensated light to one of a plurality of ports in the optical switch.
1 more element
An optical switch comprising:
- one or more waveguides to receive a first light and a second light, the first light at a first optical power and the second light at a second optical power that is lower than the first optical power due to attenuation, the optical switch having a physical shape that compensates for the attenuation;
- and
- one or more ports to output compensated light that is formed using the physical shape of the optical switch.
Dependencies are inferred from the claim text.