Polarization independent high-speed spatial modulators based on an electro-optic polymer and silicon hybrid metasurface  

作　　者：XINYU SUN FENG QIU 

机构地区：[1]College of Optical Science and Engineering,Zhejiang University,Hangzhou 310027,China [2]Institute of Advanced Technology,Westlake Institute for Advanced Study,Westlake University,Hangzhou 310024,China [3]Hangzhou Institute for Advanced Study,University of Chinese Academy of Sciences,Hangzhou 310024,China

出　　处：《Photonics Research》2022年第12期2893-2900,共8页光子学研究（英文版）

基　　金：National Natural Science Foundation of China(501100001809)。

摘　　要：Dynamical control of the constitutive properties of a light beam is important for many applications in photonics and is achieved with spatial light modulators(SLMs).Performances of the current demonstrations,such as liquidcrystal or micro-electrical mechanical SLMs,are typically limited by low(kHz)switching speeds.Here,we report a high-speed SLM based on the electro-optic(EO)polymer and silicon hybrid metasurface.The specially configured metasurface can not only support a high-Q resonance and large“optical–electrical”overlap factor,but also overcome the challenge of polarization dependence in traditional EO modulators.Combined with the high EO coefficient of the polymer,a 400 MHz modulation with an RF driving source of 15 dBm has been observed in the proof-of-concept device near the wavelength of 1310 nm.The device with the desired merits of high speed,high efficiency,and micrometer size may provide new opportunities for high-speed smart-pixel imaging,freespace communication,and more.

关 键 词：surface POLYMER POLARIZATION 

分 类 号：TN761[电子电信—电路与系统]