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.
Performance of a laser μsatellite network with an optical preamplifier
Laser satellite communication (LSC) uses free space as a propagation medium for various applications, such as intersatellite communication or satellite networking. An LSC system includes a laser transmitter and an optical receiver. For communication to occur, the line of sight of the transmitter and the receiver must be aligned. However, mechanical vibration and electronic noise in the control system reduce alignment between the transmitter laser beam and the receiver field of view (FOV), which results in pointing errors. The outcome of pointing errors is fading of the received signal, which leads to impaired link performance. An LSC system is considered in which the optical preamplifier is incorporated into the receiver, and a bit error probability (BEP) model is derived that takes into account the statistics of the pointing error as well as the optical amplifier and communication system parameters. The model and the numerical calculation results indicate that random pointing errors of σχ2G>0.05 penalize communication performance dramatically for all combinations of optical amplifier gains and noise figures that were calculated.