As an important part of fiber-optic communication, an optical module is a photoelectric converter which converts electrical signals into optical signals and vice versa. It is composed of optoelectronic devices, functional circuits and optical interfaces, etc. From the technical level, HISILICON makes improvements. This compact multi-channel RF-over-fiber receiver supports 4 or 8 channels with up to 18 GHz or optional 35 GHz bandwidth, integrating photodetector, LNA, WDM, and digital attenuation control for high-reliability, miniaturized microwave photonic and array applications. Furthermore, this could be easily expanded for.