Optical networks are high-capacity telecommunications networks based on optical technologies and component that provide routing, grooming, and restoration at the wavelength level as well as wavelength-based services. This paper deals with the twin concepts of wavelength routing and wavelength conversion in optical networks. The paper talks about the various categories of wavelength switches, routing algorithms, wavelength conversion and categories of wavelength conversion. Finally this paper deals with industry related issues like the gap between research and the industry, current and projected market for optical networking & DWDM equipment and future direction of research in this field.
An optical network consists of wavelength routers and end nodes that are connected by links in pairs. The wavelength-routing switches or routing nodes are interconnected by optical fibers. Although each link can support many signals, it is required that the signals be of distinct wavelengths. Routers transmit signals on the same wavelength on which they are received. An All-Optical wavelength routed network is that wavelength-routed network that carries data across from one access station to another without any O/E (Optical/Electronic) conversions.
An optical network consists of wavelength routers and end nodes that are connected by links in pairs. The wavelength-routing switches or routing nodes are interconnected by optical fibers. Although each link can support many signals, it is required that the signals be of distinct wavelengths. Routers transmit signals on the same wavelength on which they are received. An All-Optical wavelength routed network is that wavelength-routed network that carries data across from one access station to another without any O/E (Optical/Electronic) conversions.
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