Abstract: An optical fiber sensing system according to the present disclosure includes: an optical fiber (10) configured to detect vibration; a reception unit (21) configured to receive, from the optical fiber (10), an optical signal on which the vibration detected by the optical fiber (10) is superimposed; and an abnormality assessment unit (22) configured to assess whether a vibration pattern of the optical signal is already known, and to assess, when the vibration pattern of the optical signal is not already known, that an abnormality has occurred.

Abstract: An optical fiber sensing system according to the present disclosure comprises: an optical fiber (10) that is laid in a pipe (30); a reception unit (21) configured to receive, from the optical fiber (10), an optical signal superimposed with vibration detected by the optical fiber (10); and an assessment unit (22) configured to extract a vibration pattern of the vibration detected by the optical fiber (10) from the optical signal and determine the degradation state of the pipe (30) based on the extracted vibration pattern.

Abstract: A monitoring system according to the present disclosure includes an optical fiber (10) laid on a ground or a seabed, an optical fiber sensing unit (21) configured to receive an optical signal from the optical fiber (10) and detect a vibration produced in the ground or the seabed based on the optical signal, and an analyzing unit (22) configured to identify a natural phenomenon that has caused the detected vibration based on a unique pattern of the detected vibration.

Abstract: A monitoring system according to the present disclosure includes an optical fiber (10) laid in a monitoring area; an authenticating unit (20) configured to authenticate a person or a vehicle passing through a gate (G) for entering the monitoring area; an optical fiber sensing unit (31) configured to acquire, based on an optical signal received from the optical fiber (10), a parameter having a unique pattern corresponding to the pattern of action of the authenticated person or vehicle; and an analyzing unit (32) configured to identify the pattern of action of the authenticated person or vehicle based on the unique pattern of the parameter.

Abstract: An optical fiber sensing system according to the present disclosure includes clothing (10) including an optical fiber (20), an optical fiber sensing unit (31) configured to receive an optical signal from the optical fiber (20), and acquire, based on the optical signal, a plurality of parameters each having a pattern according to a state of a person wearing the clothing (10), and a state detection unit (32) configured to detect a state of a person wearing the clothing (10), based on a pattern contained in each of the plurality of parameters.

Abstract: A device may receive, from a fiber sensor device, sensing data associated with a fiber optic cable, the sensing data being produced by an activity that poses a threat of damage to the fiber optic cable, and the sensing data identifying: amplitudes of vibration signals, frequencies of the vibration signals, patterns of the vibration signals, times associated with the vibration signals, and locations along the fiber optic cable associated with the vibration signals. The device may process, with a machine learning model, the sensing data to determine a threat level of the activity to the fiber optic cable, the machine learning model having been trained based on historical information regarding detected vibrations, historical information regarding sources of the detected vibrations, and historical information regarding threat levels to the fiber optic cable. The device may perform one or more actions based on the threat level to the fiber optic cable.

Abstract: An optical fiber sensing system according to the present disclosure includes a sensing optical fiber (20), a medium (10) with which the sensing optical fiber (20) is integrated, and which is arranged in a monitoring target (50), an optical fiber detection unit (30) which is connected to the sensing optical fiber (20) integrated with the medium (10), the optical fiber detection unit (30) is configured to receive an optical signal from the sensing optical fiber (20), and detect a pattern according to a state of the monitoring target (50), contained in the optical signal, and a state detection unit (40) configured to detect a state of the monitoring target (50), based on the pattern contained in the optical signal.

Abstract: An optical transmission apparatus (1_1) according to the present invention includes a first transmission unit (11_1) that transmits a first optical transmission signal (21_1), a second transmission unit (11_2) that transmits a second optical transmission signal (21_2), and an output unit that outputs, when the first optical transmission signal (21_1) and the second optical transmission signal (21_2) share a set of information, both the first optical transmission signal (21_1) and the second optical transmission signal (21_2) to a first path (26_1) and outputs, when the first optical transmission signal (21_1) and the second optical transmission signal (21_2) do not share the set of information, one of the first optical transmission signal (21_1) and the second optical transmission signal (21_2) to a second path (26_2).

Abstract: An optical transmission apparatus (1_1) according to the present invention includes a first transmission unit (11_1) that transmits a first optical transmission signal (21_1), a second transmission unit (11_2) that transmits a second optical transmission signal (21_2), and an output unit that outputs, when the first optical transmission signal (21_1) and the second optical transmission signal (21_2) share a set of information, both the first optical transmission signal (21_1) and the second optical transmission signal (21_2) to a first path (26_1) and outputs, when the first optical transmission signal (21_1) and the second optical transmission signal (21_2) do not share the set of information, one of the first optical transmission signal (21_1) and the second optical transmission signal (21_2) to a second path (26_2).

Abstract: Aspects of the present disclosure describe distributed fiber optic sensing (DFOS) systems, methods, and structures that advantageously enable anomaly detection resulting from construction—or other activity based on image processing that may advantageously detect/notify/prevent damage to a fiber optic network infrastructure before such damage occurs.

Abstract: A road monitoring system according to the present disclosure includes: a cable (20) including a communication optical fiber, being laid on a road (10); a reception unit (331) configured to receive an optical signal from at least one communication optical fiber included in the cable (20); and a detection unit (332) configured to detect a pattern according to a state of the road (10), based on the optical signal, and detect an abnormal state of the road (10), based on the detected pattern according to the state of the road (10).

Abstract: A road monitoring system according to the present disclosure includes a cable (20) including a communication optical fiber laid on a road (10), a reception unit (331) configured to receive an optical signal from at least one communication optical fiber included in the cable (20), and a detection unit (332) configured to detect, based on the optical signal, a pattern according to a traveling state of a vehicle on the road (10), and detect, based on the detected pattern, a traveling state of a vehicle on the road (10).

Abstract: A railroad monitoring system according to the present disclosure includes a cable (20) including a communication optical fiber being laid on a railroad (10), a reception unit (331) configured to receive an optical signal from at least one communication optical fiber included in the cable (20), and a detection unit (332) configured to detect a pattern according to a state of the railroad (10), based on the optical signal, and detect an abnormal state of the railroad (10), based on the detected pattern according to the state of the railroad (10).

Abstract: An optical fiber sensing expansion apparatus (30) according to the present disclosure includes a sensor unit (32) storing a sensing optical fiber (33), a fixing unit for fixing the sensor unit (32) to a monitoring object (40), and a fiber connection unit (31) that is capable of connecting the sensing optical fiber (33) to an optical fiber (10), wherein the fiber connection unit (31) superimposes a detection result of the sensor unit (32) on an optical signal to be transmitted by the optical fiber (10).

Abstract: A civil engineering structure monitoring system according to the present disclosure is provided with: a cable (20) including communication optical fibers and laid in a civil engineering structure (10); a reception unit (331) configured to receive, from at least one of the communication optical fibers included in the cable (20), an optical signal including a pattern corresponding to a deteriorated state of the civil engineering structure (10); and a detection unit (332) configured to detect the deteriorated state of the civil engineering structure (10) based on the pattern.

Abstract: Aspects of the present disclosure describe hybrid distributed fiber optic sensing systems, methods, and structures that advantageously are extensions of existing fiber optic infrastructure and provide distributed fiber optic sensing (DFOS) functionality to the existing infrastructure.

Abstract: A utility pole deterioration detection system includes a cable (20) disposed in a utility pole (10), the cable (20) containing a communication optical fiber, a receiving unit (331) configured to receive an optical signal containing a pattern that changes according to a deterioration state of the utility pole (10) from at least one optical fiber contained in the cable (20), and a detection unit (332) configured to detect a deterioration state of the utility pole (10) based on the pattern.

Abstract: A state specifying system according to the present disclosure includes a cable (20) disposed in a utility pole (10), the cable (20) containing a communication optical fiber, a receiving unit (331) configured to receive an optical signal from at least one optical fiber contained in the cable (20), and a specifying unit (332) configured to specify a state of the utility pole (10) or an environmental state around the utility pole (10) corresponding to a pattern of the optical signal received by the receiving unit (331).

Abstract: A utility pole location specifying system according to the present disclosure includes a cable (20) containing a communication optical fiber disposed in a utility pole (10), a receiving unit (331) configured to receive an optical signal containing a characteristic pattern of the utility pole (10) from at least one communication optical fiber contained in the cable (20), and a specifying unit (332) configured to specify a location of the utility pole (10) based on the characteristic pattern.

Abstract: An optical transmission apparatus (1_1) according to the present invention includes a first transmission unit (11_1) that transmits a first optical transmission signal (21_1), a second transmission unit (11_2) that transmits a second optical transmission signal (21_2), and an output unit that outputs, when the first optical transmission signal (21_1) and the second optical transmission signal (21_2) share a set of information, both the first optical transmission signal (21_1) and the second optical transmission signal (21_2) to a first path (26_1) and outputs, when the first optical transmission signal (21_1) and the second optical transmission signal (21_2) do not share the set of information, one of the first optical transmission signal (21_1) and the second optical transmission signal (21_2) to a second path (26_2).