Trichromatic-color-sensing metasurface with reprogrammable electromagnetic functions

A review of light‐controlled programmable metasurfaces for remote microwave control and hybrid signal processing

“…Recently, different from the previously discussed work using light intensity as control parameter, a trichromatic-color-sensing metasurface with reprogrammable EM functions was proposed and realized. 105 By integrating four light color sensors into the corner of the metasurface, it can detect the blue, green, and red components in incident visible light and then generates various microwave functions including dual-beam, four-beam, and radar-cross-section (RCS) reduction, as shown in Figure 7A. One advantage of light-sensing method is that it can be adopted to realize self-adaptive EM control by further introducing the sensing-feedback circuit into metasurface.…”

“…[84][85][86][87][88][89][90][91][92][93][94][95] Figure 1 shows conceptually the light-controlled programmable metasurfaces, on which microwaves can be controlled and modulated by incident light in real time, offering a multiphysics interface to link light and microwave in space. [96][97][98][99][100][101][102][103][104][105][106][107][108][109][110] Light-microwave interaction is of fundamental important for some emerging fields including microwave photonics 111 and lightwave electronics. 112 Light-controlled programmable metasurfaces make it possible to achieve direct light-microwave-matter interactions on a single physical platform, which is helpful for developing and realizing advanced wave-based optoelectronic hybrid devices and applications.…”

“…On one hand, light-controlled programmable metasurfaces can be used to realize optically-driven and optical-sensing EM devices for wireless tuning of functions, such as beam tuning, cloaking, absorbing, and nonlinear generation. [96][97][98][99][100][101][102][103][104][105][106][107][108] On the other hand, light-controlled programmable metasurfaces are able to realize optoelectronic mixed signal processing including wave-based information modulation and direct light-to-microwave conversion, which is the basis and key for hybrid wireless communications and quantum networks. [113][114][115][116][117][118][119] In this article, we review recent progress on light-controlled programmable metasurfaces, including two kinds of important applications of remote microwave control and hybrid signal processing.…”

“…In contrast to wired electrical control scheme, optical control is a non‐contact remotely tuning method that provides more possibilities to release these limitations 84‐95 . Figure 1 shows conceptually the light‐controlled programmable metasurfaces, on which microwaves can be controlled and modulated by incident light in real time, offering a multiphysics interface to link light and microwave in space 96‐110 . Light‐microwave interaction is of fundamental important for some emerging fields including microwave photonics 111 and lightwave electronics 112 .…”

“…Light‐controlled programmable metasurfaces make it possible to achieve direct light‐microwave‐matter interactions on a single physical platform, which is helpful for developing and realizing advanced wave‐based optoelectronic hybrid devices and applications. On one hand, light‐controlled programmable metasurfaces can be used to realize optically‐driven and optical‐sensing EM devices for wireless tuning of functions, such as beam tuning, cloaking, absorbing, and nonlinear generation 96‐108 . On the other hand, light‐controlled programmable metasurfaces are able to realize optoelectronic mixed signal processing including wave‐based information modulation and direct light‐to‐microwave conversion, which is the basis and key for hybrid wireless communications and quantum networks 113‐119 …”