High-speed monolithic coherent optical receiver with a waveguide coupler and lateral PIN photodiodes integrated on a InP substrate

摘要

The structure and characteristics of a monolithic coherent receiver with an integrated waveguide coupler and a balanced pair of lateral PIN photodiodes are described. The lateral PIN photodiode is shown to have an improved structure and exhibits a 3-dB bandwidth of 2 GHz. Heterodyne detection at 1.8 GHz with this monolithic receiver is discussed.