CWDM SFP+ modules use CWDM wavelengths (1270-1610nm, 20nm spacing) for lower-cost WDM metro networks carrying up to 18 channels at 10 Gbps each without amplification up to 80km.
| Pin | Name | Function | Type |
|---|---|---|---|
| TX | TX | CWDM wavelength optical transmit | BUS |
| RX | RX | CWDM wavelength optical receive | BUS |