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15454 Any-to-Any Ring Topologies.

I am a new to 15454 ROADM Rings.

15454 Any-to-any Ring topology conatins only ROADM nodes without anti-ASE nodes or HUB nodes. I would like to know how to prevent amplified sponataneous emission (ASE) lasing in any-to-any rings with only ROADM nodes,or ROADM nodes with OSC regeneration or amplifier nodes.

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Re: 15454 Any-to-Any Ring Topologies.

An anti-ASE node can be created by configuring a hub node or an OADM node with some modifications. No channels can travel through the express path, but they can be demultiplexed and dropped at the channel level on one side and added and multiplexed on the other side.

http://cisco.com/en/US/products/hw/optical/ps2006/products_technical_reference_chapter09186a00806f01e5.html#wp1174997

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