The equivalent of a “show inventory” or a “show interfaces transceiver” on a Cisco ASR 9000 is “show controller”:
# show controller tenGigE 0/0/0/0
[...]
Phy:
Media type: R fiber over 1310nm optics
Optics:
Vendor: FxxxxxR
Part number: FTLXxxxxxxxxL
Serial number: AxxxxxU
# show controller tenGigE 0/0/0/0 internal [...] Pluggable Type : SFP-10G-LR
# show controller tenGigE 0/0/0/1 internal [...] Pluggable Type : DWDM-SFP-5494
It shows you the phy details of a specific interface transceiver, while “internal” shows you its type (LR, SR, DWDM, …)
To do the same on a Linux side:
# ethtool -m eth1
Transceiver type : 10G Ethernet: 10G Base-SR
Transceiver type : Ethernet: 1000BASE-SX