SFP-10G-ER on CWDM?

[Johan Marcusson]

A standard SFP-10G-ER is supposed to run transmit/receive on 1530 to 1565 nm, is it possible to use this over a 1550 nm channel in a CWDM solution like the CWDM-OADM4-2= ?

I trying to find a cheap way to combine a 10G Ethernet and a 4G FiberChannel (with DS-CWDM4Gxxxx) over the same fiber pair.

[Tom Randstrom]

Unfortunately, the SFP-10G-ER is not compatible with a CWDM filter.  CWDM filters require CWDM lasers with narrower pulses that are tuned to the specific CWDM frequency. 

What is the fiber distance?  

[Johan Marcusson]

Okay, are there any alternative solutions? It's about 25 km

[Johan Marcusson]

Can I use one channel in a CWDM-OADM4-1= for the FiberChannel link, then add a EWDM-OADM2= and use a DWDM-SFP10G for the 10G Ethernet link and run it over the same dark fiber?

[Tom Randstrom]

Yes, based upon a "typical" 25km fiber link, you should be able to use the CWDM & DWDM components you outlined above to create a point-to-point 4G CWDM & 10G DWDM link over two dark fibers. This is prefaced on the dark fiber's total link loss at 1550nm being less than 8dB of loss.

EWDM Data Sheet

http://www.cisco.com/c/en/us/products/collateral/interfaces-modules/transceiver-modules/product_data_sheet0900aecd806a1c36.pdf