Gigaopto 25G SFP28 CWDM module transceiver optics series is designed for single mode fiber and operates at a nominal CWDM wavelength.
The dom sfp modules are suitable for 25G Ethernet and wireless CPRI (option 10) applications.
It has built-in clock and data recovery (CDR). Digital diagnostics functions are available via an I2C interface, as specified by SFF-8472 and SFF-8402.