According to the report, the FWS-I uses long-wave infrared sensor technology designed to boost target acquisition capability, and improve soldier lethality, effectiveness and survivability.

http://www.govconwire.com/2014/05/bae-systems-drs-technologies-win-army-contracts-for-night-vision-technology/

The p-type interface results in LWIR detection (8-12um). By combining both interfaces within POET, MWIR and LWIR detection will be obtained simultaneously in the same pixel.

http://agoracom.com/ir/POETTechnologies/forums/discussion/topics/642639-new-integrated-night-vision-and-thermal-targeting-solution-bolsters-mission-effe/messages/2016750#message

The company will work to combine the two tools into a single platform with the goal of helping military users acquire targets in any lighting and weather conditions.

http://www.govconwire.com/2015/05/bae-awarded-434m-to-produce-army-night-vision-targeting-systems/