Fluorescent antenna, optical receiver, and signal processing method

An optical receiver, comprising:

• a lens;
• a fluorescent antenna;
• and
• a photodetector array,
• wherein
• the lens is configured to receive an incident optical signal, such that the incident optical signal passes through the lens and is converged on the fluorescent antenna to form a light spot,
• the fluorescent antenna comprises:
• one or more layers of fluorescent arrays, wherein the fluorescent arrays comprise:
• a plurality of fluorescent units;
• and
• an isolation layer between adjacent fluorescent units,
• the photodetector array comprises a plurality of photodetectors, and each fluorescent unit of the plurality of fluorescent units is connected to one or more photodetectors of the plurality of photodetectors,
• the fluorescent units of the plurality of fluorescent units comprise one or more fluorescent regions,
• the isolation layer is used to isolate emergent optical signals converted by the adjacent fluorescent units, and
• when the fluorescent antenna comprises one layer of fluorescent array, and the fluorescent units are all fluorescent regions, or
• the fluorescent antenna comprises at least two layers of fluorescent arrays, the fluorescent units of the plurality of fluorescent units further comprise one or more transparent regions in two adjacent layers of fluorescent arrays, and the transparent region of a first layer of fluorescent array overlaps the fluorescent region of a second layer of fluorescent array such that an incident light signal arrives at the fluorescent region of the second layer of the fluorescent array through the transparent region of the first layer of the fluorescent array.