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Unformatted text preview: 24 Introduction to Optical Networks OEO OEO OEO OEO OEO OEO Lightpath All-optical subnet All-optical subnet All-optical subnet Adaptation Regeneration Wavelength conversion l 1 l 1 l 2 l 2 Figure 1.10 An optical network consisting of all-optical subnetworks interconnected by optical-to-electrical-to-optical (OEO) converters. OEO converters are used in the network for adapting external signals to the optical network, for regeneration, and for wavelength conversion. protocol, for example, SONET at 10 Gb/s. This would be truly an opaque network. In contrast, a fully transparent network would support analog and digital signals with arbitrary bit rates and framing protocols. As we argued earlier, however, such a network is not practical to engineer and build. Today, a practical alternative is to engineer the network to support a variety of digital signals up to a predetermined maximum bit rate and a specific set of framing protocols, such as SONET and 10 Gigabit Ethernet (Ethernet at 10 Gb/s). The network supports a variety of framing10 Gigabit Ethernet (Ethernet at 10 Gb/s)....
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This note was uploaded on 01/15/2011 for the course ECE 6543 taught by Professor Boussert during the Spring '09 term at Georgia Institute of Technology.
- Spring '09