USource PWDM is a WDM filter with photo diode PD which is design for triple play network, CATV integration with PON.  

Common 2 models

Model 1:  Pass band 1540-1560nm for CATV, reflect band 1260-1500nn for GPON

Model 2:  Pass band 1546-1562nm for CATV, reflect band 1260-1530nn and 1575-1650nm

WDM filter without terminated PD

WDM filter with terminated PD