基于光纤色散的X波段光控相控阵波束形成技术

X-band Optically Controlled Phased Array Beam-forming Technology Based on Optical Fiber Dispersion

光控相控阵波束形成技术相对于传统的微波技术及数字阵列技术,具有瞬时工作带宽大、质量轻、电磁兼容性好、集成度高、传输损耗小等技术优势,文章利用光纤色散延迟的原理,通过由串联光开关和单模光纤组成的色散矩阵,实现了不同通道对应不同光载波的时间延迟差异,实验表明,该技术可以实现8~12GHz的宽带光控波束形成和扫描,且未观测到波束倾斜。

Compared with traditional microwave technology and digital array technology, optically controlled phased array beamforming technology has advantages with the large instantaneous bandwidth, light quality, good electromagnetic compatibility, high integration and small transmission loss. Using the principle of optical fiber dispersion delay, we realized delay difference between the different channels corresponding to different optical carriers through the dispersion matrix consisting of cascaded optical switches and single mode fiber. The experimental results show that this technique can achieve 8 ~12 GHz broadband optically controlled beam-forming and scanning, and no beam tilt is observed.