| DWDM
system components |
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| Fiber pair |
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| Multiplexing/demultiplexing
terminals |
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| • | OEO equipment at
each end of light path |
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| • | Output: SONET or
Ethernet (10G/1G) framing |
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| Amplifiers |
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| • | All optical (OO) |
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| • | ~100 km spacing |
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| Regeneration |
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| • | Electrical (OEO)
process – costly (~50% of capital) |
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| • | ~500 km spacing
(with Long Haul - LH - DWDM) |
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| • | New technologies
can lengthen this distance |
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| Remote huts,
operations & maintenance |
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