Abstract: An aspect of the invention is directed to a system of both atmospheric and underwater sensors for measuring pressure waves from a noise source. A system of pressure sensors can be formed to determine the location of an external noise source, whether in air or underwater. The system includes at least two arrays consisting of pressure sensors, including at least one atmospheric pressure sensor and at least one underwater pressure sensor, such as a hydrophone. Each sensor may be a seven-fiber intensity modulated fiber optic pressure sensor. The system includes an analog to digital converter for digitizing the pressure data received from each sensor and a processor which processes the received signals to calculate an approximate location of the noise source based upon the pressure signals received by the sensors at different times of arrival. The system can provide this capability in remote applications due to its low power requirements.

Abstract: A multiplexed fiber optic sensor system including at least one light source, one or more first optical fibers having a first end arranged to receive light from the light source(s) and transmit the light to at least one fiber optic sensor, and one or more second optical fibers arranged to receive reflected light from the fiber optic sensors and transmit the reflected light to a light sensing element. Using the sensor system, it is possible to measure physical phenomena, such as electromagnetic phenomena, along multiple points along or within a material or structure of interest or on separate materials or structures. The fiber optic sensors can be electromagnetic phenomena sensors, pressure sensors, acceleration sensors, strain sensors, temperature sensors, or other sensors designed to measure physical phenomena. The sensor system can be used to measure phenomena of interest at several locations or take different kinds of measurements at the same or approximately the same location.

Abstract: An aspect of the invention is directed to a system of both atmospheric and underwater sensors for measuring pressure waves from a noise source. A system of pressure sensors can be formed to determine the location of an external noise source, whether in air or underwater. The system includes at least two arrays consisting of pressure sensors, including at least one atmospheric pressure sensor and at least one underwater pressure sensor, such as a hydrophone. Each sensor may be a seven-fiber intensity modulated fiber optic pressure sensor. The system includes an analog to digital converter for digitizing the pressure data received from each sensor and a processor which processes the received signals to calculate an approximate location of the noise source based upon the pressure signals received by the sensors at different times of arrival. The system can provide this capability in remote applications due to its low power requirements.

Abstract: A fiber optic sensor for measuring voltage in direct current and alternating current systems is disclosed. The sensor may include an optical fiber probe containing transmitting and receiving fibers, fixed conductor elements, and a dynamic conductor element with a reflective surface or material. The reflector may be attached to a dynamic conductor. The two fixed conductors may be placed parallel to one another and coupled to a static voltage source. The dynamic conductor may bisect the fixed conductors and be coupled to a voltage source. The dynamic conductor may be spaced apart from the ends of the fibers in the fiber probe, and positioned so that light transmitted through the transmitting fiber is reflected by that surface into a receiving fiber. A light sensing means may be coupled to the receiving fiber, so light from a light reflected by the reflector body back into the receiving fibers is detected.

Abstract: An aspect of the invention is directed to a system of both atmospheric and underwater sensors for measuring pressure waves from a noise source. A system of pressure sensors can be formed to determine the location of an external noise source, whether in air or underwater. The system includes at least two arrays consisting of pressure sensors, including at least one atmospheric pressure sensor and at least one underwater pressure sensor, such as a hydrophone. Each sensor may be a seven-fiber intensity modulated fiber optic pressure sensor. The system includes an analog to digital converter for digitizing the pressure data received from each sensor and a processor which processes the received signals to calculate an approximate location of the noise source based upon the pressure signals received by the sensors at different times of arrival. The system can provide this capability in remote applications due to its low power requirements.

Abstract: A fiber optic sensor for measuring voltage in direct current and alternating current systems is disclosed. The sensor may include an optical fiber probe containing transmitting and receiving fibers, fixed conductor elements, and a dynamic conductor element with a reflective surface or material. The reflector may be attached to a dynamic conductor. The two fixed conductors may be placed parallel to one another and coupled to a static voltage source. The dynamic conductor may bisect the fixed conductors and be coupled to a voltage source. The dynamic conductor may be spaced apart from the ends of the fibers in the fiber probe, and positioned so that light transmitted through the transmitting fiber is reflected by that surface into a receiving fiber. A light sensing means may be coupled to the receiving fiber, so light from a light reflected by the reflector body back into the receiving fibers is detected.

Abstract: A fiber optic sensor for measuring electromagnetic phenomena, including electrical and magnetic fields, voltage, and current is disclosed. The sensor includes an optical fiber probe containing a transmitting fiber and at least one receiving fiber, and a reflective surface or body. The reflective surface or body may be part of or attached to a material exhibiting a physical displacement from a force exerted upon the material due to electromagnetic phenomena, such as an electrical field, a magnetic field, voltage, and current. The reflective surface may be spaced apart from the ends of the fibers in the probe, and positioned so that light transmitted through the transmitting fiber is reflected by that surface into at least one receiving fiber. A light sensing means is coupled to the at least one receiving fiber, so light from a light reflected by the reflector body back into the receiving fibers is detected.

Abstract: A licensed microwave radio multi-functional broadband system with multiple numbers of installed edge smart wireless hubs. The system provides dynamic, automated selection of transmission types, including Quadrature Amplitude Modulation (QAM), Quadrature Phase Shift Keying (QPSK) and orthogonal frequency division multiplexing (OFDM) for broadcast over point-to-point, point to multipoint and omni-directional antenna arranged in six equal 60° degree arrays. The system also includes an intelligent data IP packet measurement system that dynamically reads and controls the network Quality of Service [QoS] through software. The automated control may include throttling power up and power down to meet changing effects of transmission parameters in substantially real time.

Abstract: A content management device for moving digital audio and/or visual content to the edge of a network so that it is available in a controlled way, while avoiding bandwidth limitations. The device has a removable digital storage unit and appropriate control circuitry including a content fetcher module and an end-user communications module. The device may be preloaded, for example, with 100-200 full-length, securely encrypted motion pictures from a main content storage, then physically transported to a location at or near to an end-user. Conditional access to the content may be provided via suitable licensing arrangements such as for a limited time, a fixed amount of content or a predetermined rate of content use, or some combination thereof. The device decrypts end-user selected content and may digitally watermarking the content before distribution to the end-user. The device may automatically destroy the content if redistribution authorization expires or is otherwise found to be invalid.