EWDM Distances

Hi all

I'm getting an idea of the maximum distances of transceivers 10Gig EWDM fibre.

The only documents I can find on cisco.com are:

http://www.cisco.com/en/US/customer/prod/collateral/modules/ps5455/ps6576/product_data_sheet0900aecd801f9333.html that returns much to the dB and other things.

I don't know much about dB or how the measure dB is still used.

I hope that the following sentence on this web page (http://www.cisco.com/en/US/prod/collateral/modules/ps5455/product_data_sheet0900aecd806a1c36.html) can be explained for me in terms of kilometers or miles...

"If the total losses suffered by the Gigabit Ethernet 10 wavelengths can be accommodated within the budget of the power of the transceiver of Gigabit Ethernet DWDM 10 (for example, a Xenpak DWDM has 20 dB of power after about 80 km budget, account of the penalties of dispersion)..." "

I'm trying to see if I need to buy an amplifier for the EWDM kit that we have. The carrier has asked me to confirm the distance max I can get the kit (with and without the amplifier would be good) and I can't seem to find anywhere?

I'm pushing 10 Gbps down a fiber of 99km with this equipment.

Thank you very much

Brad

Greetings bmcginn,

in the link

http://www.Cisco.com/en/us/prod/collateral/modules/ps5455/product_data_sheet0900aecd806a1c36.html

Specifies clearly at the bottom of the image7, chromatic dispersion for 10Gig links on DWDM is 80 km, so if you want to push on this distance I bet my money to another optical amplifier @70Kms with for example an ADO to 2 channels.

"In point to point links not amplified, traffic DWDM 1Gbit can generally get about 80km distance, and 10 Gigabit DWDM traffic usually can reach 60km." "In links point to point amplified, traffic DWDM 1Gbit can usually reach distances between 100 and 120 km, and 10 Gigabit DWDM traffic can reach 80 km (limited by chromatic dispersion) generally."

That's my bet.

Best regards

Tags: Cisco Network

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