The basic wavelength division multiplexing (WDM) routing and provisioning problem is considered in this paper. The literature is replete with prescriptive integer programming models for various versions of WDM design problems, but in no case they consider the real situation of solving them taking into account the former nature of the problem, that is, its inherent vagueness. In this paper this ...

Bloodstream infection (BSI), an expensive and deadly condition, burdens healthcare. Improved BSI treatment relies on rapid, point-of-care diagnosis of causative species and presence of plasmid-mediated drug resistance. We have designed, fabricated and assembled an apparatus for automated PCR amplification by wire-guided droplet manipulation (WDM). WDM minimizes thermal resistance and exploits c...

In this paper we proposed the physical layer security scheme in WDM-PON. Simulated result of eavesdropping attempt in WDM-PON is presented. This physical security enhancement is accomplished through inclusion of Broadband Light Source in OLT to create a TDM signal in which each data frame is transmitted at unique wavelength. Simulation tools verify that implementation of enhance security techni...

The performance of a parallel computer greatly depends upon how, the different processors are capable of exchanging data. This, thus require an arbitrary permutation (nonblocking) to be done by the connection networks. A nonblocking network is capable of providing N parallel paths between a pair of nodes forming any arbitrary permutation. In this paper, we present three different simple nonbloc...

We present a closed-loop technique for measuring wavelength shifts associated with fiber Bragg gratings by using a fused biconical wavelength division multiplexer (WDM). The spectral response of the WDM is actively tuned by stretching of the coupling region to maintain a fixed coupling ratio at the reflected Bragg wavelength. The closed-loop operation allows sensitivities usually associated wit...

A WDM star coupler network consists of a number of network nodes connected via optical fibers to a passive star coupler. In a single-hop WDM network, a data packet is transmitted from one node to another without going through intermediate nodes. A number of applications require information to be sent to multiple destinations. Therefore, supporting multicast communications is important for commu...

This paper considers the scheduling problem of packet transmissions in a TDM/WDM unidirectional optical ring network. Our objective is to design a scheduling scheme for packet transmission with minimum scheduling length satisfying a set of traffic requirements. We focus on a fairly general case in that non-uniform traffic demands and arbitrary transmitter tuning latencies are allowed. Since the...

This paper provides a survey on existing survivability related problems and include the new algorithm based on existing algorithms. Survivability has become an important issue and topical subject in WDM networks. This paper reviewed the literature on survivability against multi-domain or link failures to ensure reliability in WDM networks. Survivability in multi-domain optical networks is very ...

The optical networks are fast and error free but due to some nonlinearity effects, its performance degrades. The performance of wavelength division multiplexing (WDM) in radio over fiber (RoF) systems is found to be strongly influenced by nonlinearity characteristics inside the fiber. In this paper, we have studied the effect of four wave mixing (FWM) as one of the influential factors in the WD...

In this paper an attempt is made to study the theoretical fundamentals for Coherent optical orthogonal frequency division multiplexing (CO-OFDM) for high speed, long haul optical transmission and investigated the nonlinear effect of a 16-QAM CO-OFDM and WDM CO-OFDM at 10Gbps data rate. We then demonstrated the transmission performance through simulation for single channel COOFDM and multi-chann...