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US 11,362,737 B2Granted
Ternary modulation using inter-operable transmitters and receivers
AssigneeJuniper Networks, Inc.
InventorZhen Qu
Life of this patent
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Abstract
A ternary phase shift keying transmitter and receiver can efficiently communicate using ternary encoded data that avoids indistinguishable transition curves for each of the three modulated states in the ternary encoded data. The transmitter is interoperable and can function with different types of receivers including direct detection-based receivers and coherent detection-based receivers.
Claims20
A method for processing optical data using a phase shift key transmitter, the method comprising:
- identifying binary data for transmission;
- generating ternary phase shift key data from the binary data, the ternary modulated phase shift key data being in a ternary phase shift key format comprising three states;
- generating, from the ternary phase shift key data, non-ternary phase shift key data for transmission to a receiver, the non-ternary phase shift key data being in a non-ternary phase shift key format that comprises more than three states;
- and
- transmitting, to the receiver, the non-ternary phase shift key data as light using an optical source.
2 more elements
A phase shift key device, comprising:
- a modulator to generate ternary phase shift key data from binary data, the ternary phase shift key data being in a ternary phase shift key format comprising three states;
- a converter to convert the ternary phase shift key data to non-ternary phase shift key data for transmission to a receiver, the non-ternary phase shift key data being in a non-ternary phase shift key format that comprises more than three states;
- and
- a transmitter to transmit, to the receiver, the non-ternary phase shift key data as light using an optical source.
1 more element
Dependencies are inferred from the claim text.