The planning problem of novel DWDM-centric converged metro/aggregation networks is solved by algorithms based on intelligent wavelength assignment and an auxiliary-graph approach that exploits load-balanced routing and the optical-multiplexing capability of WSSes.

Abstract We report a low-cost manufacturing approach for fabricating monolithic multi-wavelength sources dense wavelength division multiplexing (DWDM) systems that offers high yield and eliminates crystal regrowth selective area epitaxy steps are essential in traditional fabrication methods. The source integrates an array of distributed feedback (DFB) lasers with passive coupler semiconductor o...

Given a set of lightpath connection requests in an all-10 Gb/s optical dense wavelength division multiplexed (DWDM) Ethernet network, lightpaths are designed. In addition the wavelength channels are assigned subject to minimization of the channel blocking and provisional requests satisfying the limits due to accumulative linear dispersion effects over the hops. This paper proposes a routing and...

Multiwavelength semiconductor laser source for dense wavelength division multiplexing (DWDM) applications based on a novel dispersive cavity is described. Multiline lasing on the basis of a single-diode laser chip and multi-stripe diode laser is analyzed theoretically and demonstrated experimentally. Simultaneous lasing across 80% of the FWHM of the luminescence bandwidth of the AlGaAs active m...

In this paper, two bio-inspired Quality of Service (QoS) multicast algorithms are proposed in IP over dense wavelength division multiplexing (DWDM) optical Internet. Given a QoS multicast request and the delay interval required by the application, both algorithms are able to find a flexible QoS-based cost suboptimal routing tree. They first construct the multicast trees based on ant colony opti...

Recent advances in coherent optical receivers is reviewed. Digital-Signal-Processing (DSP) based phase and polarization management techniques make coherent detection robust and feasible. With coherent detection, the complex field of the received optical signal is fully recovered, allowing compensation of linear and nonlinear optical impairments including chromatic dispersion (CD) and polarizati...

To meet increased fiber capacity and transmission distance demands, ultra-Dense Wavelength-Division Multiplexing (DWDM) is preferred by Sprint because of its compatibility with Sprint's legacy fiber plant, composed primarily of standard Single-Mode Fiber (SMF). This paper focuses on long-haul transmission efficiencies and fiber compatibility. The trade-offs between bandwidth efficiency, transmi...

It is proposed to simulate the DWDM system of 1.6 Tb/s ultra high capacity using MDRZ (modified duobinary return to zero) modulation format with EDFA and symmetrical dispersion compensation scheme. Comparison of 40 channel 40Gb/s DWDM system is made at different channel spacing’s of 50GHz, 75GHz and 100Ghz to find optimum spacing at this high bit rate optical system.Duo binary format is used as...

In this paper, two bio-inspired Quality of Service (QoS) multicast algorithms are proposed in IP over dense wavelength division multiplexing (DWDM) optical Internet. Given a QoS multicast request and the delay interval required by the application, both algorithms are able to find a flexible QoS-based cost suboptimal routing tree. They first construct the multicast trees based on ant colony opti...

This work presents a performance evaluation based on elaborated analytical expressions of error probability for broadband access networkin the case of a combined technique of dense wavelength division multiplexing (DWDM) and one dimensional optical orthogonal codes (1D-OOC). Optical sources with relatively large spectrum has been considered and simulated.Besides the Multiple Access Interference...