> # SFP Transmitter Types

> The small form-factor pluggable (SFP) hardware transmitters are identified by their acronyms when displayed. Table 12-5 defines the acronyms used for SFPs.

> Table 12-5 SFP Transmitter Acronym Definitions
> Definition | Acronym
> --- | ---
> Standard transmitters defined in the GBIC specifications
> short wavelaser | swl
> long wavelaser | lwl
> long wavelaser cost reduced | lwcr
> electrical | elec
> Extended transmitters assigned to Cisco-supported SFPs
> CWDM-1470 | c1470
> CWDM-1490 | c1490
> CWDM-1510 | c1510
> CWDM-1530 | c1530
> CWDM-1550 | c1550
> CWDM-1570 | c1570
> CWDM-1590 | c1590
> CWDM-1610 | c1610

> See the "Displaying SFP Transmitter Types" topic.

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