In this paper, we explore the transmission properties of single subwavelength apertures perforated in thin metallic films flanked by asymmetric configurations of periodic arrays of indentations. It is shown how the corrugation in the input side can be used to transmit selectively only two different wavelengths. Also, by tuning the geometrical parameters defining the corrugation of the output si...

A SOA-based multiwavelength fiber ring laser for fiber sensing network is introduced in the paper. According to the demand of our sensing network which is a six-channel WDM system, the output wavelength of our MFRL is in the band of 1537nm to 1547nm with a frequency space of 200GHz. In the experiments, stable output and good flatness are acquired. Factors that can influence the wavelength shift...

In WDM optical networks, wavelength is the critical resource for efficient communication of traffic. Hence, suitable protocols are required to allocate and use the wavelengths efficiently. We have studied the wavelength reservation protocols of such networks, which are already developed and reported in literature. Following their historical development, we have outlined some generalized classif...

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The availability of an optical connection is considered to be a critical service differentiator in WDM optical networks. In this regard, the design of a protection scheme that improves the availability of high priority optical connections and makes efficient use of optical resources is a major challenge faced by optical network operators. In a previous study, we proposed the so-called priority-...

The ever-increasing Internet traffic demand introduces new challenges for telecommunications carriers. Telecom networks will have to be upgraded to cope with the new capacity requirements. However, deploying enough capacity is not the only requirement for network operators. The impact of new technologies in terms of capital investment and energy consumption becomes a key issue. There is a speci...