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US 9,866,928 B2Granted
Intra-transceiver optical superchannel switching via RF sub-band multiplexing technique
AssigneeNEC Corporation
InventorsYue-Kai Huang, Shaoliang Zhang, Fatih Yaman, Ting Wang
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Abstract
Systems and methods are disclosed for data communication by performing RF sub-band multiplexing and demultiplexing by cascading a radio-frequency (RF) mixing module and optical dual-polarized (DP) QPSK modulator forhybrid RF/optical IQ modulation; and performing intra-transceiver optical superchannel switching through the RF sub-band multiplexing.
Claims15
A method for data communication, comprising
- performing RF sub-band multiplexing by cascading a radio-frequency (RF) mixing module and optical dual-polarized (DP) modulator for hybrid RF/optical IQ modulation;
- combining analog RF mixing components and coherent optical transceivers to provide multi sub-band transmission for an optical wavelength using coherent transmission with different base-bands IQ signal, each with separate I/Q real value lanes;
- changing RF sub-bands within a superchannel and exchanging leading and lagging LO phases for RF IQ mixing to achieve positive or negative sub-band swapping;
- and
- performing intra-transceiver optical sub-band switching through the RF sub-band multiplexing.
2 more elements
Dependencies are inferred from the claim text.