Implementation of digital variable optical attenuator based on SFP package

A digital variable optical attenuator(VOA)module based on standard small form-factor pluggable(SFP)package was designed.The SFP VOA module consists of MEMS VOA and electronic control unites,and highly integrates with standard SFP package and interface.The functions of SFP and high-accuracy digital attenuation were realized.The SFP VOA not only has the characteristics of high integration and flexible configuration that the SFP devices possesses,supporting hot-plug,but also has the optical performance of rapid response,good linearity,high stability and high attenuation that the MEMS VOA possesses.Therefore,it will be widely used in optical network communication devises and optical transmission systems.