High-reflectivity non-periodic sub-wavelength gratings with small-angle beam-steering ability and its application in Fabry–Perot cavity

Quasi-resonant cavity enhanced photodetector with a subwavelength grating

“…In Table 2, we list the theoretical parameters of each region derived from Ref. [27] and Eq. ( 3), such as width, k m , and η m .…”

“…With the rise of the planar dielectric materials subwavelength grating (SWG) [16][17][18][19][20][21][22][23][24][25][26][27] , the integration, miniaturization, and advancement of optoelectronics is promoted by combining functional SWG optical elements with optoelectronic devices. People can design SWGs to form a specific phase distribution condition, to control the incident light, and thus to realize the transmission, reflection [17][18][19] , resonance [20] , deflection [21,22] , focusing [23,24] , splitting [25,26] , polarization, etc.…”

“…People can design SWGs to form a specific phase distribution condition, to control the incident light, and thus to realize the transmission, reflection [17][18][19] , resonance [20] , deflection [21,22] , focusing [23,24] , splitting [25,26] , polarization, etc. All of these extraordinary features are significant for integration and application with optoelectronic devices in the field of optoelectronics and optical communications [16][17][18][19][20][21][22][23][24][25][26][27] .…”

“…1. This photodetector contains a tunable F-P filtering cavity (FPC) [12] , a symmetrical SWG deflection reflector (SSWG-DR) [21,22,27] and a built-in p-i-n photodiode. According to the simulation results, the QRCE-PD can obtain a peak quantum efficiency of 93.2%, a 3 dB bandwidth of 33.5 GHz, a spectral linewidth of 0.12 nm, and a tuning range of 28 nm simultaneously.…”