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To: OWN STOCK who wrote (3890)	2/10/2001 7:48:05 PM
From: David C. Burns	Read Replies (1) of 3951

it means a loop of fiber run from a point on the coast of a lake or river or ocean to another point similarly located...with enough loops, you could go around Africa for example...i.e. "festoon" the continent...we used to call it coastal looping, or water routing, etc... In that application, Raman has the advantage that the pump can sit on dry land, and deliver its power (from each end of the loop) into the fiber underwater. That should allow it to compete in terms of cost with EDFAs underwater. It is expensive to deploy a series of EDFAs that have to survive for many years in sea water. Expensive to deploy and service. In theory, the Raman pump can sit on the shore and be repaired...but it is more expensive than common EDFA pumps, due to its high power. Just curious, wouldn't it be hard to get power to these Raman pumps around the coast of Africa? Or would this be a solar powered pump?

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