Scalable and reconfigurable true time delay line based on an ultra-low-loss silica waveguide

Song Qian Qian; Hu Zhe Feng; Chen Kai Xin

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Scalable and reconfigurable true time delay line based on an ultra-low-loss silica waveguide

机译：基于超低损耗二氧化硅波导的可扩展和可重新配置的真实时延线

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A scalable and reconfigurable on-chip optical true time delay line consisting ofMach -Zehnder interferometer (MZI) switches and delay waveguides is proposed and demonstrated with the ultra-low-loss silica waveguide platform. The MZI switches provide the reconfiguration of the light traveling paths and hence different delays. Our proposed structure can be easily scaled to an M bit delay line with a slight increase in dimensions. The footprint of our fabricated 1 bit delay line is 33 mm x 13 mm (length x width) and can provide a delay of 6.0 ps with an insertion loss of 1.2 dB at the operating wavelength of 1550 nm, while the footprint of the 4 bit delay line is 43 mm x 14 mm and can provide a discrete delay tuning from 6.0 to 90.2 ps with a delay deviation lower than 0.2 ps and a tuning response time of 0.84 ms. The insertion losses are lower than similar to 2.34 dB, and the extinction ratios are greater than 20.42 dB. The average switching power is similar to 132.6 mW. Our proposed optical true time delay lines could find applications for optical beamforming in phased array antennas. (C) 2018 Optical Society of America

机译：用超低损耗二氧化硅波导平台提出和演示由MACH -Zehnder干涉仪（MZI）开关和延迟波导组成的可伸缩和可重新配置的片上光学真延迟线。 MZI开关提供了光行驶路径的重新配置，因此不同的延迟。我们所提出的结构可以很容易地缩放到M位延迟线，尺寸略有增加。我们制造的1位延迟线的占地面积为33 mm×13mm（长度x宽度），并且可以在1550nm的工作波长下插入1.2 dB的插入损耗，提供6.0ps的延迟，而4位的占地面积延迟线是43mm×14mm，并且可以提供从6.0到90.2 ps的离散延迟调谐，延迟偏差低于0.2 ps，调谐响应时间为0.84 ms。插入损耗低于2.34dB的插入损耗，消光比率大于20.42 dB。平均切换功率类似于132.6 MW。我们所提出的光学真时延迟线可以在相控阵天线中找到用于光束形成的应用。（c）2018年光学学会

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《Applied optics》 |2018年第16期|共6页
作者
Song Qian Qian; Hu Zhe Feng; Chen Kai Xin;
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Univ Elect Sci &

Technol China Sch Optoelect Sci &

Engn Chengdu 611731 Sichuan Peoples R China;

Univ Elect Sci &

Technol China Sch Optoelect Sci &

Engn Chengdu 611731 Sichuan Peoples R China;

Univ Elect Sci &

Technol China Sch Optoelect Sci &

Engn Chengdu 611731 Sichuan Peoples R China;

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Scalable and reconfigurable true time delay line based on an ultra-low-loss silica waveguide

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