光学学报, 2017, 37 (2): 0223001, 网络出版: 2017-02-13
基于波长路由的光真延时模块
Integrated Optical True Time Delay Module Based on Optical Wavelength Router
光学器件 集成光器件 光真延时 光控相控阵雷达 阵列波导光栅路由器 optical devices integrated optics devices optical true time delay optical phased array radar arrayed waveguide grating router
摘要
设计并制作了一种全集成的基于波长路由的光真延时(OTTD)模块。该模块由两个相同的通道间隔为1.6 nm的16×16阵列波导光栅路由器(AWGR)与一组波导延时线阵级联而成。测试结果表明该模块性能优异,工作波长通道间串扰小于-27 dB,光纤端到端峰值波长的插入损耗约为12 dB。采用矢量网络分析仪测试得到延时线阵提供的光延时步长为(6.24±0.4) ps。该模块中两个阵列波导光栅路由器及延时线阵均被集成在一块硅基片之上,并且都由二氧化硅(SiO2)波导制作而成,整个器件尺寸为3.5 cm×3.5 cm。
Abstract
A fully integrated optical true time delay (OTTD) module based on optical wavelength router is designed and fabricated. Two 16×16 arrayed waveguide grating routers (AWGR) with channel spacing of 1.6 nm are cascaded with a group of waveguide delay lines to form the module. The experimental result shows that this module has excellent performance, the device crosstalk at working wavelengths is lower than -27 dB, and the insertion loss is about 12 dB at peak wavelength end to end. The optical delay increment of (6.24±0.4) ps is measured experimentally by vector network analyzer. Two AWGR and delay line array of the module are integrated on the silicon substrate. This device is fabricated with silicon dioxide waveguide and the whole size is 3.5 cm×3.5 cm.
陈阳, 郎婷婷, 何建军. 基于波长路由的光真延时模块[J]. 光学学报, 2017, 37(2): 0223001. Chen Yang, Lang Tingting, He Jianjun. Integrated Optical True Time Delay Module Based on Optical Wavelength Router[J]. Acta Optica Sinica, 2017, 37(2): 0223001.