Analysis of Radio over Fiber system for mitigating four-wave mixing effect

In this paper,an efficient 8-channel 32Gbps RoF(Radio over Fiber)system incorporating Bessel Filter(8/32 RoFBF)has been demonstrated to reduce the impact of non-linear transmission effects,specifically Four-Wave Mixing(FWM).The simulation results indicate that the proposed 8/32 RoF-BF system provides an optimum result w.r.t.channel spacing(75 GHz),input source power(0 dBm)and number of input channels(8).In comparison with the existing RoF system,the proposed 8/32 RoF-BF system has been validated analytically and it is found that the performance of the proposed system is in close proximity particularly in FWM sideband power reduction of the order of 4 dBm for the 8-channel 32Gbps RoF system.

A novel optical burst switching architecture for high speed networks

A novel optical burst switching (OBS) high speed network architecture has been proposed.To verify its feasibility and evaluate its performance,lust-enough-time (JET) signaling has been considered as a high performance protocol.In the proposed architecture,to avoid burst losses,firstly,a short-prior- confirmation-packet (SPCP) is sent over the control channel that simulates the events that the actual packet will experience.Once SPCP detects a drop at any of the intermediate nodes,the actual packet is not sent but the process repeats.In order to increase network utilization,cost effectiveness and to overcome some limitations of conventional OBS,inherent codes (e.g.,orthogonal optical codes (OOC)), which are codified only in intensity,has been used.Through simulations,it shows that a decrease in burst loss probability,cost effectiveness and a gain in processing time are obtained when optical label processing is used as compared with electronic processing.

Performance analysis of an integrated scheme in optical burst switching high-speed networks

A new integrated scheme based on resource-reservation and adaptive network flow routing to alleviate contention in optical burst switching networks is proposed.The objective of the proposed scheme is to reduce the overall burst loss in the network and at the same time to avoid the packet out-of-sequence arrival problem.Simulations are carried out to assess the feasibility of the proposed scheme.Its perfor- mance is compared with that of contention resolution schemes based on conventional routing.Through extensive simulations,it is shown that the proposed scheme not only provides significantly better burst loss performance than the basic equal proportion and hop-length based traffic routing algorithms,but also is void of any packet re-orderings.