In recent years, with the rapid exhaustion of the capacity in wide area networks led by Internet and multimedia applications, demand for high bandwidth has been growing at a very fast pace. Wavelength-division multiplexing (WDM) is a promising technique for utilizing the huge available bandwidth in optical fibers. In this paper, we consider efficient designs of nonblocking WDM permutation switc...

Integration of SDH and WDM network technology in dynamic multilayer networks is considered one promising option for migrating from rather static SDH networks to the automatically switched transport network (ASTN) with a dynamic photonic layer. This paper investigates dimensioning of SDH/WDM multilayer networks. Two different approaches for dimensioning network links and nodes are compared for d...

In wavelength-division multiplexing (WDM) optical networks, the bandwidth request of a traffic stream can be much lower than the capacity of a lightpath. Efficiently grooming low-speed connections onto high-capacity lightpaths will improve the network throughput and reduce the network cost. In WDM/SONET ring networks, it has been shown in the optical network literature that by carefully groomin...

All-optical Wavelength DivisionMultiplexing (WDM) networks are believed to be a fundamental component in future high speed backbones. However, while wavelength routing made circuit switching in WDM feasible the reality of extant optical technology does not yet provide the necessary devices to achieve individual optical packet switching. This paper proposes to achieve all-optical packet switchin...

This paper discusses the issue of providing basic QoS in optical burst-switched WDM networks. As in WDM networks, end-to-end connection demands are dynamic routes, it changes the state according to the current network traffic status. In order to improve the basic QoS, load balancing technique for lightpath establishment in Optical WDM Networks has been proposed. This approach contains three pha...

We investigate the provisioning of optical-frequency (wavelength) resources in optical networks that support broadband wireless access networks (BWANs). Millimeter-wave–over–fiber technology with operation in the 60-GHz licensefree band is considered for the BWANs. The WDM-based optical network (handling BWAN traffic) is heterogenous, implying that it also bears traffic originating from (or des...

Subcarrier wavelength-division multiaccess (SCM-WDM) networks have many features, such as high system capacity, flexible packet switching access and very fast tuning speed of RF local-oscillator, etc. Though, generally speaking, existing protocols for WDMA networks can be applied to SCM-WDM networks, the transmission efficiency in terms of packet delay and network throughput is low, since an op...

Timing jitter induced by soliton collisions is the leading nonlinear penalty in wavelength-division-multiplexed (WDM) dispersion-managed soliton transmission. Through analysis and numerical simulations we show that consecutive complete collisions together with partial collisions at the system output cause approximately the same amount of timing shift as partial collisions at the system input. W...

Insertion loss is an important parameter used to characterize passive fiber-optic components, such as WDM couplers and variable optical attenuators. This article describes an automated insertion loss measurement system which incorporates 980 nm, 1310 nm, 1529 nm and 1561 nm DFB lasers and two internal fiber optic standards. Insertion loss measurements collected with the system for WDM couplers ...

We propose a bidirectional wavelength division multiplexing passive optical network (WDM-PON) based on a reflective semiconductor optical amplifier (RSOA) by employing a differential quadrature phase shift keying (DQPSK) signal for down-link and an on-off keying (OOK) re-modulated signal for up-link over 45km SMF colorless WDM-PON without dispersion compensation was demonstrated for both 10 Gbi...