HyOptic FWDM Filter is a 3 ports passvie optical component based on TFF (Thin Film Filter) technology, which can split 1260-1410nm band wavelength from input mixed optical signals to PASS port, and 1420-1620nm band wavelengths go to REFLECT port. Which is also named mini CWDM module.

Parameters	Unit	Limited Value
Pass  Insertion Ioss	dB	≤0.6
Reflect Insertion Loss	dB	≤0.4
PDL(Polarization Dependent Loss)	dB	≤0.1
Pass Isolation	dB	≥30
Reflect Isolation	dB	≥15
Return Loss	dB	≥45
Directivity	dB	≥55