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There is an increase in the number of chronic and heart diseases due to work culture etc. The current hospital-centric system is becoming inefficient to treat patients that demand immediate attention and this can efficiently be implemented by using the Internet of Things (IoT) technology. The aim of this paper is to implement IoT-based health monitoring system which measures temperature, blood pressure, and heartbeat of a patient located remotely and send the data to the doctor for analyzing the condition of the patient. And also an optical light sensor is used to check the light condition in the patient room and based on the sensor value the light will be controlled (ON/OFF). The system is implemented using a BeagleBone Black (BBB) development board. This model saves the work time of the doctors to check the patient's condition. By using the Global System for Mobile communication (GSM), the patient's data is sent to the cloud through which the doctor can monitor the parameters anywhere in the world using the mobile application or web page. [ABSTRACT FROM AUTHOR]

Copper nanoparticles (Cu) anchored lithium niobate (LiNbO3) nanostructures were prepared by a simple hydrothermal technique. The fine and sparse Cu nanoparticles were homogeneously dispersed over the surface of LiNbO3. An effectual anchoring of Cu was evidenced from the acquired reflection planes in diffraction analysis, which clearly indicate the face-centered cubic structure of Cu. The UV-Visible spectrum of LiNbO3 and Cu/LiNbO3 nanocomposites were also studied. When the Cu nanoparticles were doped with LiNbO3/LiTaO3 superlattice system, the change in the dispersion relation was observed theoretically. The characteristics of the polariton dispersion variation with filling factor of Cu nanoparticles concentration were investigated systematically. The importance of the polariton modes in communication sector was analyzed and the occurrence of new modes on the polaritonic gap, where the propagation of the electromagnetic wave is forbidden, were obtained in the system due to the presence of copper nanoparticles. [ABSTRACT FROM AUTHOR]

This study has presented spatial continuous wave laser and spatiotemporal vertical cavity surface emitting laser (VCSEL) for high speed long haul optical wireless communication channels. Possible data rates range from 40 Gb/s to 250 Gb/s over propagation distance ranges from 500 km to 2500 km. The optical wireless communication (OWC) system performance is tested through the measurement of maximum Q-factor, minimum bit error rate (BER) and signal to noise ratio (SNR). It is observed that spatiotemporal VCSEL has presented better performance than CW laser in the OWC system, especially for long haul transmission applications. It is observed that SNR improvement ratio ranges from 8.15 % to 19 % by using spatiotemporal VCSEL than CW laser for bit rate of 40 Gb/s over propagation distance ranges from 500 km to 2500 km. Max. Q-factor improvement ratio ranges from 4.62 % to 13.71 % by using spatiotemporal VCSEL than CW laser for data rate of 40 Gb/s over propagation distance ranges from 500 km to 2500 km. So it is clear that spatiotemporal VCSEL is more suitable for long haul OWC applications than other optical sources. [ABSTRACT FROM AUTHOR]

High-speed single-mode fiber-optic communication systems have been presented based on various hybrid multiplexing schemes. Refractive index step and silica-doped germanium percentage parameters are also preserved during their technological boundaries of attention. It is noticed that the connect design parameters suffer more nonlinearity with the number of connects. Two different propagation techniques have been used to investigate the transmitted data rates as a criterion to enhance system performance. The first technique is soliton propagation, where the control parameters lead to equilibrium between the pulse spreading due to dispersion and the pulse shrinking because of nonlinearity. The second technique is the MTDM technique where the parameters are adjusted to lead to minimum dispersion. Two cases are investigated: no dispersion cancellation and dispersion cancellation. The investigations are conducted over an enormous range of the set of control parameters. Thermal effects are considered through three basic quantities, namely the transmission data rates, the dispersion characteristics, and the spectral losses. [ABSTRACT FROM AUTHOR]