In this paper 16 channels DWDM system at 10Gbps has been investigated with Semiconductor optical amplifier at 0.8 nm channel spacing and the performance has been calculated on the basis of bit error rate, quality factor and optical output power. It is observed that the signal can be transmitted with acceptable BER and Q-factor using Semiconductor optical amplifier at low signal input power of -...

This paper outlines an approach to modelling ultra long-haul DWDM links taking into account spectral variations of gain and noise in EDFAs. A black-box model is used to describe EDFA gain and noise figure tilt and full nonlinear simulations are carried out using the split-step Fourier method. The effect of pre-emphasis and power optimisation is investigated for a typical ultra long-haul link of...

A method for thickness monitoring and turning-point prediction during deposition of narrow band pass optical filters (NBPF) for dense-wavelength-division-multiplexing (DWDM) applications is proposed. The method is based on a recurrent approach, with relative transmittance .tting, and includes partial coherence and monochromator bandpass e.ects. We show that the partial coherence e.ects in thin ...

In order to facilitate interoperability in a network composed of next generation lambda-switch-capable equipment, this document defines a standard lambda label format that is compliant with the Dense Wavelength Division Multiplexing (DWDM) and Coarse Wavelength Division Multiplexing (CWDM) grids defined by the International Telecommunication Union Telecommunication Standardization Sector. The l...

In order to facilitate interoperability in a network composed of next generation lambda-switch-capable equipment, this document defines a standard lambda label format that is compliant with the Dense Wavelength Division Multiplexing (DWDM) and Coarse Wavelength Division Multiplexing (CWDM) grids defined by the International Telecommunication Union Telecommunication Standardization Sector. The l...

Increased channel capacity of optical transmission system is obtained by either increasing the bit rate of transmission or by using the technique of Wavelength Division Multiplexing (WDM). In long distance communication, higher launched power is required to achieve the required signal-to-noise ratio (SNR) but with increased launched optical powers, rates and the number of wavelength channels, n...

The Internet is evolving from best-effort service toward an integrated or differentiate service framework with Quality of Service (QoS) assurances that are required for new multimedia service applications. Given this increasing demand for high bandwidth Internet with QoS assurances in the coming years, IP/MPLS based control plane combined with wavelength-routed Dense Wavelength Division Multipl...