Abstract: There is provided a method of evaluating user churn in wireless networks. The method includes receiving data from a plurality of wireless electronic devices connected to and operating in a plurality wireless networks and/or network types, wherein the data has been collected for each wireless electronic device by wireless device software embedded in an application or memory of the respective wireless electronic device and configured to collect the data when the wireless electronic device accesses one or more of the plurality of wireless networks and/or network types, and wherein the data comprises one or more identifiers associated with the wireless electronic device or a user of the wireless electronic device.

Abstract: There is provided a method of evaluating user churn in wireless networks. The method includes receiving data from a plurality of wireless electronic devices connected to and operating in a plurality wireless networks and/or network types, wherein the data has been collected for each wireless electronic device by wireless device software embedded in an application or memory of the respective wireless electronic device and configured to collect the data when the wireless electronic device accesses one or more of the plurality of wireless networks and/or network types, and wherein the data comprises one or more identifiers associated with the wireless electronic device or a user of the wireless electronic device.

Abstract: There is provided a system and method of evaluating wireless device and/or wireless network performance and/or user experience, on a wireless electronic device.

Abstract: There is provided a method of evaluating wireless device performance, and/or wireless network performance, and/or wireless network usage trends, on a wireless electronic device, the method comprising: providing wireless device software on the wireless electronic device, the wireless device software being embedded in an application or memory of the wireless electronic device, and being operable to perform at least one test associated with characteristics and/or location of the device, and/or performance of the device and/or the network, and/or usage of the device by a user; communicating with at least one of: i) an operating system of the wireless electronic device and ii) an external testing server to perform the at least one test, wherein the at least one test is performed according to at least one testing parameter provided in a configuration and/or the wireless device software, the at least one testing parameter comprising at least one behavioural criterion that controls the impact of the testing on the op

Abstract: There is provided a method of controlling behaviour of a system that evaluates wireless device performance, and/or wireless network performance, and/or wireless network usage trends.

Abstract: There is provided a method of controlling behaviour of a system that evaluates wireless device performance, and/or wireless network performance, and/or wireless network usage trends.

Abstract: Disclosed are systems and methods for improving applications involving the generation and detection of electromagnetic radiation at terahertz (THz) frequencies. Embodiments of the systems and methods include the fabrication and use of plasmonic devices that enhance light-matter interaction at the nanometer scale by extreme focusing with nanostructured metals. This plasmonic enhancement is used to produce high efficiency THz photoconductive switches that combine the benefits of low-temperature grown GaAs while using mature 1.55 ?m femtosecond lasers operating with photon energy below the GaAs band-gap.

Abstract: There is provided a method of evaluating wireless device and/or wireless network performance and/or wireless network usage trends. The method comprises providing wireless device software to each of a plurality of wireless electronic devices connected to one or more of a plurality of networks by having the wireless device software embedded in the corresponding electronic device, wherein the wireless device software is embedded in or operable with a plurality of types of applications and performs at least one test associated with characteristics and/or location of the device, and/or performance of the device and/or the network, and/or usage of the device by a user; receiving via one or more collection servers, test data obtained by the wireless device software of each of the plurality of wireless electronic devices; aggregating the received data; and storing and outputting the aggregated data.

Abstract: Disclosed are systems and methods for improving applications involving the generation and detection of electromagnetic radiation at terahertz (THz) frequencies. Embodiments of the systems and methods include the fabrication and use of plasmonic devices that enhance light-matter interaction at the nanometer scale by extreme focusing with nanostructured metals. This plasmonic enhancement is used to produce high efficiency THz photoconductive switches that combine the benefits of low-temperature grown GaAs while using mature 1.55 ?m femtosecond lasers operating with photon energy below the GaAs band-gap.

Abstract: There is provided a method of evaluating wireless device and/or wireless network performance and/or wireless network usage trends. The method comprises providing wireless device software to each of a plurality of wireless electronic devices connected to one or more of a plurality of networks by having the wireless device software embedded in the corresponding electronic device, wherein the wireless device software is embedded in or operable with a plurality of types of applications and performs at least one test associated with characteristics and/or location of the device, and/or performance of the device and/or the network, and/or usage of the device by a user; receiving via one or more collection servers, test data obtained by the wireless device software of each of the plurality of wireless electronic devices; aggregating the received data; and storing and outputting the aggregated data.

Abstract: There is provided a method of evaluating wireless device performance, and/or wireless network performance, and/or wireless network usage trends, on a wireless electronic device, the method comprising: providing wireless device software on the wireless electronic device, the wireless device software being embedded in an application or memory of the wireless electronic device, and being operable to perform at least one test associated with characteristics and/or location of the device, and/or performance of the device and/or the network, and/or usage of the device by a user; communicating with at least one of: i) an operating system of the wireless electronic device and ii) an external testing server to perform the at least one test, wherein the at least one test is performed according to at least one testing parameter provided in a configuration and/or the wireless device software, the at least one testing parameter comprising at least one behavioural criterion that controls the impact of the testing on the op

Abstract: There is provided a method of controlling behaviour of a system that evaluates wireless device performance, and/or wireless network performance, and/or wireless network usage trends.

Abstract: Telecommunication networks are under stress due to rapid traffic increase cause mostly by large file transfers. Disclosed herein is a cross-layer transport protocol specifically designed to efficiently handle large transactions. Traffic generated from large transactions is shaped into a periodic succession of fixed-size data frames. Each transaction can then be scheduled for transmission using a two-way reservation protocol. Exemplary results show that the proposed approach is capable of significantly improving goodput and end-to-end delay relative to TCP, improving efficiency of bandwidth utilization by over 40%.

Abstract: A novel overlay networking method designed specifically to handle the large file transfers that constitute a large and growing portion of media-rich Internet traffic is disclosed. The proposed system and method uses large (e.g., 10 MB) packets or Media Frames (MF) and orderly concatenations of these frames into chains (MC) to achieve a considerable reduction in power consumption relative to current IP Internet routers. Transmission of each MC is scheduled, while individual MFs are routed directly in interstices within MCs.

Abstract: Telecommunication networks are under stress due to rapid traffic increase cause mostly by large file transfers. Disclosed herein is a cross-layer transport protocol specifically designed to efficiently handle large transactions. Traffic generated from large transactions is shaped into a periodic succession of fixed-size data frames. Each transaction can then be scheduled for transmission using a two-way reservation protocol. Exemplary results show that the proposed approach is capable of significantly improving goodput and end-to-end delay relative to TCP, improving efficiency of bandwidth utilization by over 40%.

Abstract: Disclosed are systems and methods for improving the performance of systems for generating and detecting electromagnetic radiation at terahertz (THz) frequencies. Embodiments of the systems and methods include the fabrication and use of coupling tapers to provide efficient transfer of THz radiation between a photomixer and a waveguide that supports a propagating THz mode. A representative system comprises of a photomixer to convert high-frequency components of an optical pump signal into corresponding electrical THz frequencies, a waveguide that supports a propagating THz mode, and a matching taper that effectively converts the highly localized currents generated by the photomixer to the mode supported by the waveguide.

Abstract: Disclosed are devices and methods for enhancing the performance of photoconductive switches or photomixers used to generate or receive terahertz radiation. An interlaced electrode is used to minimize carrier transit times across an absorbing semiconductor photoconductor. This electrode is designed to support a plasmonic resonance such that coupling of the optical pump signal to the absorbing photoconductor is enhanced.

Abstract: Disclosed are devices and methods for enhancing the performance of photoconductive switches or photomixers used to generate or receive terahertz radiation. An interlaced electrode is used to minimize carrier transit times across an absorbing semiconductor photoconductor. This electrode is designed to support a plasmonic resonance such that coupling of the optical pump signal to the absorbing photoconductor is enhanced.

Abstract: Disclosed are systems and methods for improving wavelength control in tunable laser sources. Embodiments of the systems and methods include delivering a fraction of the light output from the laser to an optical filter subsystem. The optical filter subsystem is capable of outputting at least one filter response signal, and comprises 2 complementary optical etalon filters with nominally identical free spectral ranges but offset by nominally one third of the free spectral range. The filter response signal is processed in a control unit which executes a control algorithm to generate a tuning signal that is used to control the wavelength of the laser.

Abstract: Optical networks interconnect a plurality of optical network units (ONUs) to an optical line terminal (OLT). The OLT comprises a plurality of optical transceivers that are wavelength division multiplexed and connected to a WDM metro network. The metro network is configured to facilitate communication of a plurality of wavelengths between the OLT and local nodes, the local nodes including a wavelength sharing network configured to connect at least one of the wavelengths communicated with the OLT to a plurality of feeder fibers. The feeder fibers connect the wavelength sharing network to remote nodes that comprise WDM devices that have pluralities of output ports. An optical combiner allows the first and second ONUs to share the same transceiver in the OLT.