Abstract: In some embodiments, a system includes a first antenna element configured, in response to receiving fifth generation (5G) communication signals carrying encoded data, to generate a first surface electromagnetic wave. The first surface electromagnetic wave is capable of tunneling through a conductive enclosure and includes the encoded data. The system includes a second antenna element, within the conductive enclosure configured, in response to receiving the first surface electromagnetic wave, to generate a second surface electromagnetic wave within the conductive enclosure for distributing the encoded data to an electronic device operating in the conductive enclosure.

Abstract: In some embodiments, a system includes a first antenna element configured, in response to receiving fifth generation (5G) communication signals carrying encoded data, to generate a first surface electromagnetic wave. The first surface electromagnetic wave is capable of tunneling through a conductive enclosure and includes the encoded data. The system includes a second antenna element, within the conductive enclosure configured, in response to receiving the first surface electromagnetic wave, to generate a second surface electromagnetic wave within the conductive enclosure for distributing the encoded data to an electronic device operating in the conductive enclosure.

Abstract: In some embodiments, a system includes a first antenna element configured, in response to receiving fifth generation (5G) communication signals carrying encoded data, to generate a first surface electromagnetic wave. The first surface electromagnetic wave is capable of tunneling through a conductive enclosure and includes the encoded data. The system includes a second antenna element, within the conductive enclosure configured, in response to receiving the first surface electromagnetic wave, to generate a second surface electromagnetic wave within the conductive enclosure for distributing the encoded data to an electronic device operating in the conductive enclosure.

Abstract: A linear array of underwater radio frequency (RF) antennas is implemented, which emit surface electromagnetic waves propagating along either water-air or water-seafloor interface. The phase difference ?? between neighboring antennas defines the overall beam direction, while the so-formed directional beam intensity remains almost constant near the antenna array due to the largely two-dimensional character of beam propagation. By adjusting the phase difference ??, the narrow two-dimensional surface beam may be sent in any direction over 360°, thus enabling targeted RF communication with any desired object located near the said interface. An impedance matching enclosure filled with an impedance matching fluid may also be utilized surrounding the antennas to reduce antenna dimensions and improve coupling of electromagnetic energy to the surrounding salt water medium, thereby improving underwater radio communication performance.

Abstract: A linear array of underwater radio frequency (RF) antennas is implemented, which emit surface electromagnetic waves propagating along either water-air or water-seafloor interface. The phase difference ?? between neighboring antennas defines the overall beam direction, while the so-formed directional beam intensity remains almost constant near the antenna array due to the largely two-dimensional character of beam propagation. By adjusting the phase difference ??, the narrow two-dimensional surface beam may be sent in any direction over 360°, thus enabling targeted RF communication with any desired object located near the said interface. An impedance matching enclosure filled with an impedance matching fluid may also be utilized surrounding the antennas to reduce antenna dimensions and improve coupling of electromagnetic energy to the surrounding salt water medium, thereby improving underwater radio communication performance.

Abstract: A far-field optical microscope capable of reaching nanometer-scale resolution using the in-plane image magnification by surface plasmon polaritons is presented. The microscope utilizes a microscopy technique based on the optical properties of a metal-dielectric interface that may, in principle, provide extremely large values of the effective refractive index neff up to 102-103 as seen by the surface plasmons. Thus, the theoretical diffraction limit on resolution becomes ?/2neff, and falls into the nanometer-scale range. The experimental realization of the microscope has demonstrated the optical resolution better than 50 nm for 502 nm illumination wavelength.

Abstract: In a free space communication network in which different communication nodes are linked together by directed beams, a method for dynamically configuring the topology of the network allows the transmission directions of the communication nodes to be autonomously changed to communicate with a new node as dictated by the needs of the network. Moreover, the nodes can be switched from directional to broadcast and back again on an as-needed basis. The network consists of a topology that can be rapidly and physically reconfigured as required to provide multiple connectivity, a desired quality of service, or to compensate with the loss of communication links between nodes. The loss of direct communication between any two nodes in an optical network can occur because of obscuration of the atmospheric path between the two nodes. The directed beam which provides the communication channel between the two nodes can, in this situation, be steered to direct its energy towards another accessible node.

Abstract: A far-field optical microscope capable of reaching nanometer-scale resolution using the in-plane image magnification by surface plasmon polaritons is presented. The microscope utilizes a microscopy technique based on the optical properties of a metal-dielectric interface that may, in principle, provide extremely large values of the effective refractive index neff up to 102-103 as seen by the surface plasmons. Thus, the theoretical diffraction limit on resolution becomes ?/2neff, and falls into the nanometer-scale range. The experimental realization of the microscope has demonstrated the optical resolution better than 50 nm for 502 nm illumination wavelength.