Youopto 400G 40km ROSA is a  receiver optical subassembly (ROSA) . Four APD photodiodes, a quad TIA as receiver components and an optical demultiplexer for four LWDM channels are mounted into a package with a LC receptacle sleeve for the optical connector. It is designed for use in optical modules for high-speed telecommunication and data applications 

Each lane date rates up to 56GBd PAM4

4CH APD chip

LWDM TFF Demux integrated

Long history of proven field reliability

Designed for Telcordia-GR468

Operating temperature range:-5℃ to 75℃

Rohs compliant.