Optowiz semi-tunable DWDM SFP28 is a two fiber duplex transceiver module designed for 10G and 25G Ethernet, and 5G fronthaul CPRI 7/8/9/10 applications over transmission distance up to 20 km of SMF. The transceiver consists of two sections: The transmitter section incorporates a cooled 25G DFB direct modulated laser(DML). And the receiver section consists of an avalanche photo diode(APD) integrated with a Trans impedance preamplifier(TIA). The operating center wavelength of the DFB DML can be tuned to set four independent DWDM channels of 0.8nm spacing with a thermo electrical cooler(TEC) and a simple firmware control.

- 16 DWDM channels over a CWDM band

- 0.8nm (150GHz) channel spacing DWDM systems

- Semi-tunable operation with four channel tuning by software

- TEC Cooled DFB DML transmitter and APD receiver 

- Link length up to 20km G652.D single mode fiber

- Low power dissipation of a maximum 2.5 W over operating temperature

- Operating temperature : ST, ET, IT 

- High stability of operating center wavelength over wide temperature