40G QSFP+ GEN2 Compare to 40G QSFP+: Real-time DDM Function

　　We have known that is common to realize multichannel real-time DDM function in transceivers with data rate lower than 10Gbps, but very complicated for those more than 10Gbps, as the latter is mostly based on COB not TO packaging technique.
　　“Multichannel parallel optical power real-time monitoring means more to optical network than single-channel transceiver, because any one channel of multichannel module having problem would lead to overall failure. Once it can realize multichannel simultaneous monitoring, it means 40G or 100G module is no longer an uncontrolled black box. With optical power monitoring loopback, engineers can design power automatic feedback compensation circuit, enable the modules adjust to wider temperature range and poor external environment. Multichannel simultaneous monitoring also assures vector compliance of every path." As a JUHUA product specialist told.
　　The main difference between 40G QSFP+ GEN2 and existing 40G QSFP+ on the market lies in the multichannel real-time DDM function. As for parallel high-speed optical transceiver with higher rate, it requires excellent design and precise layout to realize optic circuit detection on 4-channel or 12-channel array light chip in an extremely limited space, which has been met by JUHUA patented optical engine technology. Starting optical engine technology development since 2011, now by its own endeavor and cooperation with quality suppliers, JUHUA has gained rich experience and unique technology about array LENS development and integrated optical devices coupling capsulation.
　　Reference reading: JUHUA Starts Batch Production of 40G QSFP GEN2 Optical Transceiver