“…In order to optimize the overall photoelectric performance of the device, the research of adding resonator structures to conventional detectors has attracted the attention of researchers. Current researches include adding SPP [ 10 , 11 ] or metamaterials [ 12 ] on the device surface, adding Bragg reflectors [ 13 , 14 ] or layer of heavily-doped virtual substrate [ 15 , 16 ] on the substrate, and adding dielectric resonant antennas on the device side [ 17 ], etc. In 2015, Jill A. Nodde et al fabricated a resonant cavity enhanced (RCE) photodetector by adding one-dimensional plasma gratings on the surface of T2SLs detectors, which can couple incident light into the plane of the device and propagate along the semiconductor metal interface in plasmon mode [ 10 ].…”