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US 11,949,459 B2Granted
Ternary modulation using inter-operable transmitters and receivers
AssigneeJuniper Networks, Inc.
InventorZhen Qu
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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 data in a binary format;
- generating ternary phase shift key data from the data in the binary format, the data being encoded in the ternary phase shift key data in three states;
- generating non-ternary phase shift key data from the ternary phase shift key data, the data being encoded in the non-ternary phase shift key data in a quantity of states other than the three states;
- and
- transmitting the non-ternary phase shift key data to a receiver as light.
2 more elements
A phase shift key device, comprising:
- a modulator to generate ternary phase shift key data from data in a binary format, the data being encoded in the ternary phase shift key data in three states;
- a converter to convert the ternary phase shift key data to non-ternary phase shift key data, the data being encoded in the non-ternary phase shift key data in a quantity of states other than the three states;
- and
- a transmitter to transmit the non-ternary phase shift key data to a receiver.
1 more element
Dependencies are inferred from the claim text.