ASR900\9000 optics support-matrix
Compatability matrix specifically for ASR 920
http://www.cisco.com/c/en/us/td/docs/routers/asr920/hardware/installation/guide/ASR920_HIG/Supported_SFPs.html
Compatability matrix specifically for ASR 9000 (researching CWDM XFP:s for our 9001).
https://supportforums.cisco.
According to this the DWDM SFP+ for 9001 should be coded as
DWDM-SFP10G-xx.yy