Performance Analysis of a Full - Duplex WDM-EPON based System with Fiber to Wireless Optical Network
Wireless technique is speedily becoming more essential during last four decade. Optical wireless channel is a type of communication in which unguided visible, IR, UV light wave is used to carry message signal. Based on transmission range optical wireless channel is used to send message at ultra-short, short, medium, high and ultra-high range. In this paper message signal is send through IR light wave at long range OWC from optical line terminal (OLT), having frequency lying in the range of 750nm-1600nm.On the other hand single mode optical fiber is used at receiver end to carry signal to the optical network unit (ONU).In this paper it is demonstrated that WDM-EPON technology has been successfully deployed in fiber to home which makes system more advanced, cost effective and having very high bandwidth and very high data rate. The proposed bidirectional simulation is made on Optisystem software and analyzed considering Qfactor, BER and power received.
Techno-economical comparison between GPON and EPON networks
Taking in consideration two leading high capacity optical access technologies, this paper presents a simple cost comparison between GPON and EPON platforms, exposing their major characteristics, making a comparative analysis to find the advantages and disadvantages between these two technologies. The work includes studies on the economic and technical feasibility of implementing a passive optical network; and the choice of valid economic and technical arguments when establishing, planning, or expanding such networks in a given region. The techno economic balance today clearly points to GPON technology, despite the high volume of IP-Ethernet data traffic which favors EPON.
Geomagnetic micropulsations due to the motion of ocean waves
When sea waves move in the magnetic field of the earth, electric currents are generated in the water volume. These currents give rise to a small magnetic field which perturbs the earth's field. For plane trochoidal waves, this perturbing field decays exponentially with altitude and lies in a vertical plane which is oriented in the direction of wave propagation. The magnitude of the perturbing field also depends upon the magnitude and dip angle of the earth's field, and upon the height, wavelength, and propagation direction of the sea waves. For north-south waves, sea state 5, and an altitude of 100 feet, the perturbation is of the order of 0.1 gamma.