Double Mixing MethodforSubcarnrer Multiplexed Optical Systems

Highsensitivity reception isa crucial problemofoptical communications. Theproposed optical-microwave double mixing methodcanprovide 30dB highermixingproduct ina narrowband compared tothedirect optical detection. Thismethod canbe advantageously usedforthereception of subcarrier multiplexed optical signals. L~~~~~~~~~~~~~~~ 1 2 -O