Distributed fiber optic sensing systems and methods
AssigneeCable Television Laboratories, Inc.
InventorsLuis Alberto Campos, Zhensheng Jia, Mu Xu, Haipeng Zhang, Belal Hamzeh
Life of this patent
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Abstract
A method for distributed fiber optic sensing (DFOS) includes (a) generating first data signals for transmission via a first fiber optic strand, (b) generating first sensing signals for transmission via the first fiber optic strand, and (c) analyzing at least one of first back-scattering signals and first forward-scattering signals of the first sensing signals, to perform DFOS. The method may further include generating the first sensing signal such that presence of the first sensing signal on the first fiber optic strand does not interfere with transmission of the first data signal by the first fiber optic strand.
Claims18
A method for distributed fiber optic sensing (DFOS), the method comprising:
- generating first data signals;
- generating first sensing signals;
- controlling one or more parameters of the first sensing signals at least partially based on a type of the first data signals;
- providing each of the first data signals and the first sensing signals to a first fiber optic strand, for transmission by the first fiber optic strand;
- receiving, from the first fiber optic strand, first scattering signals resulting from a perturbation of the first fiber optic strand while the first sensing signals are being transmitted by the first fiber optic strand;
- and
- analyzing the first scattering signals to perform DFOS.
A method for distributed fiber optic sensing (DFOS), the method comprising:
- generating first data signals;
- generating first sensing signals;
- controlling one or more parameters of the first sensing signals at least partially based on a type of the first data signals;
- providing each of the first data signals and the first sensing signals to a first fiber optic strand, for transmission by the first fiber optic strand;
- generating second sensing signals for transmission via a second fiber optic strand;
- providing the second sensing signals to a second fiber optic strand, for transmission by the second fiber optic strand;
- receiving, from the first fiber optic strand, scattering signals of the first sensing signals resulting from a perturbation of the first fiber optic strand while the first sensing signals are being transmitted by the first fiber optic strand;
- receiving, from the second fiber optic strand, scattering signals of the second sensing signals resulting from a perturbation of the second fiber optic strand while the second sensing signals are being transmitted by the second fiber optic strand;
- and
- analyzing each of (a) the scattering signals of the first sensing signals and (b) the scattering signals of the second sensing signals, to perform DFOS.
A distributed fiber optic sensing (DFOS) system, comprising:
- a sensing signal transmitter configured to generate first sensing signals for transmission via a first fiber optic strand, at least partially based on a type of data signals to be transmitted by the first fiber optic strand, such that the first sensing signals do not interfere with transmission of the data signals by the first fiber optic strand;
- and
- a scattering signal analyzer configured to analyze first scattering signals resulting from a perturbation of the first fiber optic strand while the first sensing signals are being transmitted by the first fiber optic strand, to perform DFOS.
Dependencies are inferred from the claim text.