Abstract: The present invention relates to an electromechanical battery comprising a single pole-pair Halbach array of permanent magnets incorporated into an annular flywheel, which together comprise a rotor assembly, a means for levitating the rotor assembly using a “double-lift” attractive magnetic levitator under active control, and a means for actively stabilizing the spinning rotor assembly by interaction with the fringe fields of the Halbach array.

Abstract: The present invention relates to an electromechanical battery comprising a single pole-pair Halbach array of permanent magnets incorporated into an annular flywheel, which together comprise a rotor assembly, a means for levitating the rotor assembly using a “double-lift” attractive magnetic levitator under active control, and a means for actively stabilizing the spinning rotor assembly by interaction with the fringe fields of the Halbach array.

Abstract: An optical bus. Optical sub-assemblies are used to connect lengths of optical fiber to form a single optical fiber that is a bus. A master transceiver may be connected to one end of the fiber and nodes can be connected to the optical sub-assemblies. Each optical sub-assembly includes a center fiber with a mirror that enables each connector to reflect optical signals out of the fiber and that enables a node to launch optical signals on the optical bus. The optical bus can also be connected with a second transceiver that may be used to deliver optical power to the attached nodes. Some nodes include two optical subassemblies to enable bidirectional communication on the optical bus.

Abstract: An optical bus. Optical sub-assemblies are used to connect lengths of optical fiber to form a single optical fiber that is a bus. A master transceiver may be connected to one end of the fiber and nodes can be connected to the optical sub-assemblies. Each optical sub-assembly includes a center fiber with a mirror that enables each connector to reflect optical signals out of the fiber and that enables a node to launch optical signals on the optical bus. The optical bus can also be connected with a second transceiver that may be used to deliver optical power to the attached nodes. Some nodes include two optical subassemblies to enable bidirectional communication on the optical bus.

Abstract: Systems and methods for collecting data. A modular sensing system includes a renewable power source with wireless and/or optical communication modules, a processing plane, and a sensing plane. The sensing systems can be deployed in various environments or on active subjects. A device with various components can be used to interact with the sensing system and collect data in real time or at a later time. Sensing systems can be enclosed within a structure or body and then recharged or renewed using an optical signal transmitted through the boundary.

Abstract: An optical bus. Optical sub-assemblies are used to connect lengths of optical fiber to form a single optical fiber that is a bus. A master transceiver may be connected to one end of the fiber and nodes can be connected to the optical sub-assemblies. Each optical sub-assembly includes a center fiber with a mirror that enables each connector to reflect optical signals out of the fiber and that enables a node to launch optical signals on the optical bus. The optical bus can also be connected with a second transceiver that may be used to deliver optical power to the attached nodes. Some nodes include two optical subassemblies to enable bidirectional communication on the optical bus.

Abstract: An optical bus. Optical sub-assemblies are used to connect lengths of optical fiber to form a single optical fiber that is a bus. A master transceiver may be connected to one end of the fiber and nodes can be connected to the optical sub-assemblies. Each optical sub-assembly includes a center fiber with a mirror that enables each connector to reflect optical signals out of the fiber and that enables a node to launch optical signals on the optical bus. The optical bus can also be connected with a second transceiver that may be used to deliver optical power to the attached nodes. Some nodes include two optical subassemblies to enable bidirectional communication on the optical bus.

Abstract: A sensing system tethered to an optical fiber for delivering optical power. A sensing system has a semiconductor device that includes photodiodes and a laser. The optical signal delivered through the optical fiber generates a current in the photodiodes that can be used to at least recharge the sensing system's power supply or bias the laser. The optical signal can be modulated to deliver data to the sensing system. The laser can be modulated to transmit data from the sensing system over the optical fiber. Because the power source can be recharged, the sensing system can also transmit and receive using an RF module.

Abstract: An optical identification element. The optical identification element is associated with an object and includes encoded or stored information associated with the object. The optical identification element includes an optical assembly that generates electrical power in response to incident light from a reader. The generated electrical power is used by the optical identification element to at least retrieve the data and then transmit the data back to the reader optically.

Abstract: A modular sensor architecture. A sensor includes multiple planes that are in electrical communication. A power plane provides a power source and a communications module that can be optical and/or electrical in nature. The power source can be upgraded using optical power delivered over an optical fiber. The sensor can also both transmit/receive data over the optical fiber. A processing plane provides memory and processing power. The processing plane can be updated/upgraded via the communications module or the optical fiber. A sensor plane includes multiple sensors. Deployed sensors can transmit and receive data or programming using mesh networks and using low power pulse modulation.

Abstract: A modular sensing system architecture. A sensing system includes multiple planes that are in electrical communication. A power plane provides a power source and a communications module that can be optical and/or electrical in nature. The power source can be upgraded using optical power delivered over an optical fiber. The sensing system can also both transmit/receive data over the optical fiber. A processing plane provides memory and processing power. The processing plane can be updated/upgraded via the communications module or the optical fiber. A sensor plane includes multiple sensors. The architecture enables sensor planes to be interchangeable while still having communication with other planes of the sensor. The processing plane can be updated to accommodate different sensor configurations.

Abstract: Systems and methods use single-fiber optical add/drop multiplexers (OADMs) to enable bi-directional data transmission in WDM systems over a single fiber. By reducing the required capacity for an optical network from dual fibers to a single fiber, significant cost and bandwidth efficiencies are achieved. The systems and methods also provide redundancy protection in single-fiber bidirectional line ring systems. In the event of a downstream fiber or device failure, the OADM module receives a signal on a first wavelength from a first direction, shifts the signal from the first wavelength to a second wavelength, and sends the signal back down the fiber it originated from on the second wavelength, thus maintaining the propagation of the signal in the ring system.

Abstract: A redundant optical signal transmission and reception system is disclosed to enable information exchange via an optical communications network without data loss in the event of optical transmitter or receiver failure. In one embodiment, the redundant optical signal system includes a primary transmission link comprising a plurality of optical transmitters and a multiplexor for modulating and combining electrical signals into a primary multiplexed optical signal. In the event of failure of an optical transmitter, a backup transmission link is activated to compensate for the malfunctioning transmitter. The backup transmission link utilizes a backup optical transmitter to modulate the electric signal formerly received by the malfunctioning optical transmitter. The backup transmission link combines the backup optical signal with the primary multiplexed optical signal to form a complete optical signal for transmission over the optical network.

Abstract: An optical signal return path system includes a transmitter having a sample clock generator for generating a sample clock and an RF signal receiver for receiving and converting an analog RF data signal into a first data stream of digitized RF data samples at a rate determined by the sample clock. Supplemental channel circuitry provides a second data stream. A multiplexor receives and combines the first data stream and second data stream, and an optical transmitter converting the combined data stream into a serialized optical data signal for transmission over an optical fiber. The second data stream may contain maintenance data reflecting an operational state of the transmitter. A receiver receives the optical data signal and recovers therefrom a digital data stream and an associated first clock having an associated first clock rate. The data stream is stored in a memory device at the first clock rate.

Abstract: An optical signal return path system includes a transmitter having a sample clock generator for generating a sample clock and an RF signal receiver for receiving and converting an analog RF data signal into a first data stream of digitized RF data samples at a rate determined by the sample clock. Supplemental channel circuitry provides a second data stream. A multiplexor receives and combines the first data stream and second data stream, and an optical transmitter converting the combined data stream into a serialized optical data signal for transmission over an optical fiber. The second data stream may contain maintenance data reflecting an operational state of the transmitter. A receiver receives the optical data signal and recovers therefrom a digital data stream and an associated first clock having an associated first clock rate. The data stream is stored in a memory device at the first clock rate.

Abstract: System and techniques for reducing the polarization dependency of an optical component by combining the actions of a circulator and a polarization beam combiner to separate an optical signal into a plurality of orthogonally oriented polarization components; rotate at least one of the components so that the polarization orientation of the components are parallel; propagate the components through respective input ports of an optical component at substantially the same time; rotate at least one of a plurality of output components from the optical component so that the polarization orientation of the output components are orthogonal; and recombine the plurality of output components into an output optical signal.

Abstract: A variable optical attenuator. A PIN structure is integrated with an optical detector such as a PIN diode or an APD diode. When the PIN structure is forward biased, the light signal is not affected and is detected by the optical detector. When the PIN structure is reverse biased, the light signal is attenuated and the dynamic range of the optical detector can be increased.

Abstract: A modular sensor architecture. A sensor includes multiple planes that are in electrical communication. A power plane provides a power source and a communications module that can be optical and/or electrical in nature. The power source can be upgraded using optical power delivered over an optical fiber. The sensor can also both transmit/receive data over the optical fiber. A processing plane provides memory and processing power. The processing plane can be updated/upgraded via the communications module or the optical fiber. A sensor plane includes multiple sensors. Deployed sensors can transmit and receive data or programming using mesh networks and using low power pulse modulation.

Abstract: An optical bus. Optical sub-assemblies are used to connect lengths of optical fiber to form a single optical fiber that is a bus. A master transceiver may be connected to one end of the fiber and nodes can be connected to the optical sub-assemblies. Each optical sub-assembly includes a center fiber with a mirror that enables each connector to reflect optical signals out of the fiber and that enables a node to launch optical signals on the optical bus. The optical bus can also be connected with a second transceiver that may be used to deliver optical power to the attached nodes. Some nodes include two optical subassemblies to enable bidirectional communication on the optical bus.

Abstract: Systems and methods for collecting data. A modular sensing system includes a renewable power source with wireless and/or optical communication modules, a processing plane, and a sensing plane. The sensing systems can be deployed in various environments or on active subjects. A device with various components can be used to interact with the sensing system and collect data in real time or at a later time. Sensing systems can be enclosed within a structure or body and then recharged or renewed using an optical signal transmitted through the boundary.