System and method for fiber sensing
AssigneeAlibaba Group Holding Limited
InventorChongjin Xie
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Abstract
One embodiment described herein provides a system for distributed fiber sensing. The system can include a plurality of network elements (NEs) in an optical transport network (OTN) and a control-and-management module coupled to the NEs. A respective network element (NE) can include a first wavelength coupler configured to separate an optical supervisory channel (OSC) signal from a data-carrying signal received from a fiber span, a polarization-measurement unit configured to perform a polarization measurement on the OSC signal, and a transmitter configured to transmit an outcome of the polarization measurement to the control-and-management module, thereby facilitating distributed fiber sensing based on the outcome of the polarization measurement.
Claims19
A network element (NE), comprising:
- a first wavelength coupler configured to separate a first optical supervisory channel (OSC) signal from a data-carrying signal received from a fiber span;
- a polarization-measurement unit having an input coupled to an output of the first wavelength coupler, wherein the polarization-measurement unit is configured to perform a polarization measurement on the first OSC signal to obtain a state of polarization of the first OSC signal;
- and
- an OSC unit comprising a receiver and a transmitter, wherein the receiver is configured to receive the first OSC signal and the transmitter is configured to transmit a second OSC signal that includes the state of polarization of the first OSC signal to a control-and-management unit, thereby facilitating distributed fiber sensing.
A system for distributed fiber sensing, comprising:
- a plurality of network elements (NEs) in an optical transport network (OTN) and a control-and-management unit coupled to the NEs;
- wherein a respective network element (NE) comprises:
- a first wavelength coupler configured to separate a first optical supervisory channel (OSC) signal from a data-carrying signal received from a fiber span;
- a polarization-measurement unit having an input coupled to an output of the first wavelength coupler, wherein the polarization-measurement unit is configured to perform a polarization measurement on the first OSC signal to obtain a state of polarization of the first OSC signal;
- and
- an OSC unit comprising a receiver and a transmitter, wherein the receiver is configured to receive the first OSC signal and the transmitter is configured to transmit a second OSC signal that includes the state of polarization of the first OSC signal to the control-and-management unit, thereby facilitating distributed fiber sensing.
A method for distributed fiber sensing, comprising:
- receiving, at a network element (NE), optical signals from a fiber span coupled to the NE;
- separating a first optical supervisory channel (OSC) signal from a data-carrying signal in the received optical signals;
- performing a polarization measurement on the first OSC signal to obtain a state of polarization of the first OSC signal;
- generating a second OSC signal that includes the state of polarization of the first OSC signal;
- and
- transmitting the second OSC signal to a control-and-management unit;
- and
- determining environmental factors surrounding the fiber span based on the state of polarization of the first OSC signal.
Dependencies are inferred from the claim text.