32ch Reconfigurable Optical Add Multiplexer Using Technique for Stacked Integration of Chip-Scale-Package PDs on Silica-Based PLC

We have developed a 32ch reconfigurable optical add multiplexer (ROAM) that incorporates inline tap-monitors fully integrated on a silica PLC chip by using a new stacked integration technique. The module exhibited a low insertion loss of 9.8 dB (pass through ports), and monitor PD responsivities of ≫0.7 A/W.