Today, passive optical networks (PONs) are mostly used as modern high-speed access networks for various applications. However, there are also several specific applications, such as in business, office, army or science sector, which require a complex protection and backup system against failures and malfunctions. Typically, tree or star topologies are used for passive optical networks PONs. Thes...

In the present paper, the recent applications of optical parametric amplifiers (OPAs) in hybrid wavelength division multiplexing (WDM)/time division multiplexing (TDM) local area passive optical networks have been modeled and parametrically investigated over wide range of the affecting parameters. Moreover, we have analyzed the ability of the hybrid WDM/TDM Passive optical networks to handle a ...

This article describes Ethernet Passive Optical Networks (EPONs), an emerging local subscriber access architecture that combines low cost point-to-multipoint fiber infrastructure with Ethernet. EPONs are designed to carry Ethernet frames at standard Ethernet rates. EPONs use a single trunk fiber that extends from a central office to a passive optical splitter, which then fans out to multiple op...

While the capacity of next-generation access network is expected to be 100 Gb/s and beyond, coherent optics going a logical choice for physical layer as currently used intensity-modulation/ direct-detection technology will fail meet required power budget such high line-rate systems. In this article, we present an overview necessities, timeframe, technological challenges future passive optical u...

One of the key challenges in next generation access networks based on Ethernet Passive Optical Network (EPON) technology is Dynamic Bandwidth Allocation (DBA) process. In this paper we have proposed ‘Parnian’, a two-stage nested-auction for dynamic bandwidth allocation management in Ethernet Passive Optical Networks. In the proposed ‘Parnian’ method, by running nested auction, based on EPON arc...

This invited paper describes about mobile wavelength division multiplexing (WDM) backhaul network designs for future radio access networks. First, it introduces mobile backhaul requirements to support LTE-Advanced and Beyond with emphasis on coordinated multipoints (CoMP) techniques. It primarily considers WDM passive optical networks (WDM-PON) as promising optical access technologies for mobil...