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Continuously Tunable Thin-Film Lithium Niobate Optical Delay Line with 293 ps Tuning Range

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【作者】 宋吕斌; 郑勇; 任嫄; 南博洋; 刘瑞雪; 钟浩宗; 李林; 汪旻; 陈锦明; 伍荣波; 程亚;

【Author】 Lv-Bin Song;Yong Zheng;Yuan Ren;Bo-Yang Nan;Rui-Xue Liu;Hao-Zong Zhong;Lin Li;Min Wang;Jin-Ming Chen;Rong-Bo Wu;Ya Cheng;State Key Laboratory of Precision Spectroscopy,East China Normal University;The Extreme Optoelectromechanics Laboratory (XXL),School of Physics and Electronic Science,East China Normal University;Hefei National Laboratory;Shanghai Research Center for Quantum Sciences;Collaborative Innovation Center of Extreme Optics,Shanxi University;

【通讯作者】 陈锦明;伍荣波;程亚;

【机构】 State Key Laboratory of Precision Spectroscopy,East China Normal University; The Extreme Optoelectromechanics Laboratory (XXL),School of Physics and Electronic Science,East China Normal University; Hefei National Laboratory; Shanghai Research Center for Quantum Sciences; Collaborative Innovation Center of Extreme Optics,Shanxi University;

【摘要】 <正>We present a compact optical delay line(ODL) with wide-range continuous tunability on thin-film lithium niobate platform. The proposed device integrates an unbalanced Mach–Zehnder interferometer(MZI) architecture with dual tunable couplers, where each coupler comprises two 2 × 2 multimode interferometers and a MZI phase-tuning section. Experimental results demonstrate continuous delay tuning from 0 to 293 ps through synchronized control of coupling coe伍cients, corresponding to a 4 cm path difference between interferometer arms.

【关键词】 interferometer; tunable; coupler; tuning; synchronized; lithium; unbalanced;
【基金】 supported by the National Natural Science Foundation of China (Grant Nos. 12192251, 12334014, 12404378, 92480001, 12134001, 12174113, 12174107, 12474325, 12404379, and 12474378);the Innovation Program for Quantum Science and Technology (Grant No. 2021ZD0301403);Shanghai Municipal Science and Technology Major Project (Grant No. 2019SHZDZX01);Fundamental Research Funds for the Central Universities;the Engineering Research Center for Nanophotonics & Advanced Instrument, Ministry of Education, East China Normal University (Grant No. 2023nmc005)
  • 【文献出处】 Chinese Physics Letters ,中国物理快报(英文版) , 编辑部邮箱 ,2025年09期
  • 【分类号】TN25
  • 【下载频次】3
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