Optical Lightwave Systems in Existing Networks

Abstract

To become economically feasible, broadband networks have to be optical, even though individual links may be microwave, coaxial, or even satellite based. The recent technological strides in making very high quality fibers and optical devices, and the availability of ATM switches, all point to the use of optical systems becoming more and more entrenched in current and future networks. In this Chapter, the existing networks where optical systems are an integral part are identified. The emphasis is on the telecommunication environment and the role these in which optical systems have significantly altered the economics of both broadband and wideband data communication. A recent study of a typical developing country in the Middle East has indicated that any delay in bringing optical systems into major telecommunication centers is a significant source of negative cash flow to the telephone business, and more than that, the lingering demand of services will not be met (in any economically viable fashion) except by establishing OC-3 or at least OC-1 links between the population centers of the country.