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O波段8通道硅基二氧化硅平坦化阵列波导光栅的设计及制备 被引量:3

Design and Fabrication of O Band 8 Channel Flat-top Arrayed Waveguide Grating Based on Silica on Silicon
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摘要 设计并制作了一款应用于IEEE 200/400GbE标准802.3bs的阵列波导光栅.该阵列波导光栅使用2.0%的超高折射率差硅基二氧化硅材料,使得芯片尺寸及损耗较小.为了获得平坦化的接收光谱,将输出波导进行展宽,采用多模波导结构,激发若干个高阶模,数个模式叠加使得原本高斯状的光谱顶部产生平坦化,形成箱形接收光谱.设计的阵列波导光栅的中心波长为1 291.10nm,通道间隔为800GHz,芯片尺寸为11mm×4mm.经过等离子增强化学气相沉积和感应耦合等离子刻蚀工艺制备了芯片,测试结果表明最小的插入损耗为-3.3dB,相邻通道间串扰小于-20dB,单通道1dB带宽在2.12~3.06nm范围,实现了良好的解复用和平坦化效果,在实际光通信系统中有一定的实用价值. An arrayed waveguide grating,which is applied to IEEE 200/400 GbE standard 802.3bs,is designed and manufactured.The arrayed waveguide grating uses the silica-on-silicon material,which has 2.0% ultra-high refractive index difference,making the less chip size and insertion loss.In addition,in order to obtain a flattened receiving spectrum,the output waveguides are widened and the multimode waveguide structures are used to excite a few of higher order modes.Several patterns are overlaid so that the top of the original Gaussian spectrum is flattened and forms a box-like receiving spectrum.At last,the designed center wavelength of the arrayed waveguide grating is 1 291.10 nm,the channel spacing is 800 GHz,and the device size is 11 mm×4 mm.The microchip is manufactured by plasma enhanced chemical vapor deposition and inductively coupled plasma etching.The test results show that,the minimum insertion loss is about-3.3dB,the crosstalk between adjacent channels is less than-20dB,and the single channel 1dB bandwidth ranging from 2.12nm to 3.06nm,realizing agood wavelength demultiplexing and flattening effect,and having a certain practical value in the actual optical communication system.
出处 《光子学报》 EI CAS CSCD 北大核心 2017年第8期15-23,共9页 Acta Photonica Sinica
基金 国家高技术研究发展计划(No.2015AA016902) 国家自然科学基金(Nos.61435013 61405188) 集成光电子学国家重点联合实验室自主研究课题资助~~
关键词 阵列波导光栅 波分复用 光子器件 平坦光谱响应 光通信 Arrayed waveguide gratings Wavelength division multiplexing Photonic devices Flat spectral response Optical communication
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