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Fiber optic transmission system for a metropolitan area network
Fiber optic transmission system for a metropolitan area network
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机译:城域网的光纤传输系统
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摘要
A fiber optic transmission system for a metropolitan area network includes a plurality of interface devices operable to be coupled to a fiber optic transmission link carrying an optical signal and having a length of 300 km or less. The link has a transmission loss associated with an unpumped state of the link, and the plurality of interface devices collectively introduce a loss of at least 6 decibels to the link. The system also includes a distributed Raman amplifier stage coupled to the link, the distributed Raman amplifier stage operable to pump at least a portion of the link to reduce the transmission loss of the at least a portion of the link compared to its unpumped state, the reduced link transmission loss facilitating allocation of at least a portion of a gain to at least partially offset the loss associated with the plurality of interface devices.
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