A Tunable Optical Delay Line Based on Cascaded Silicon Nitride Microrings for Ka-Band Beamforming

被引：38

作者：

Lin, Dongdong ^{[1
]}

Xu, Xuemeng ^{[1
]}

Zheng, Pengfei ^{[1
]}

Yang, Huimin ^{[1
]}

Hu, Guohua ^{[1
]}

Yun, Binfeng ^{[1
]}

Cui, Yiping ^{[1
]}

机构：

[1] Southeast Univ, Adv Photon Ctr, Nanjing 210096, Jiangsu, Peoples R China

来源：

IEEE PHOTONICS JOURNAL | 2019年 / 11卷 / 05期

基金：

中国国家自然科学基金; 国家重点研发计划; 美国国家科学基金会;

关键词：

Optical delay line; microring resonator; microwave photonics; TRUE-TIME-DELAY; CHIP;

D O I：

10.1109/JPHOT.2019.2941510

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A continuously tunable optical delay line with low delay ripple based on four cascaded tunable silicon nitride microring resonators for Ka-band beamforming network is proposed. The delay responses of the tunable optical delay line were investigated theoretically and experimentally. And a maximum delay tuning range of 300.3 ps, 169.4 ps and 88.6 ps were achieved when the delay bandwidth is set as 2 GHz, 5 GHz and 10 GHz respectively. In addition, low delay ripple about 8.5 ps and low additional loss less than 3.6 dB were obtained. Moreover, the maximum delay tuning range was increased to about 395 ps by combining the off-resonance region of the cascaded MRRs.

引用

页数：10

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