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Large-range tunable fractional-order differentiator based on cascaded microring resonators

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Abstract

In this paper, we experimentally demonstrate an all-optical continuously tunable fractional-order differentiator using on-chip cascaded electrically tuned microring resonators (MRRs). By changing the voltage applied on a MRR, the phase shift at the resonance frequency of the MRR varies, which can be used to implement tunable fractional-order differentiator. Hence fractional-order differentiator with a larger tunable range can be obtained by cascading more MRR units on a single chip. In the experiment, we applied two direct current voltage sources on two cascaded MRRs respectively, and a tunable order range of 0.57 to 2 have been demonstrated with Gaussian pulse injection, which is the largest tuning range to our knowledge.

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DOI:10.1007/s12200-016-0571-x

所属栏目:RESEARCH ARTICLE

基金项目:This work was partially supported by the National Basic Research Program of China (No. 2011CB301704), the Program for New Century Excellent Talents in Ministry of Education of China (No. NCET-11-0168), and the National Natural Science Foundation of China (Grant Nos. 11174096 and 61475052).

收稿日期:2015-10-30

修改稿日期:2015-12-28

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Ting YANG:Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology, Wuhan 430074, China
Shasha LIAO:Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology, Wuhan 430074, China
Li LIU:Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology, Wuhan 430074, China
Jianji DONG:Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology, Wuhan 430074, China

联系人作者:Jianji DONG(jjdong@mail.hust.edu.cn)

备注:Jianji Dong is professor in Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology (HUST), Wuhan, China. He is working on the silicon photonics, photonic computing, and microwave photonics. He is an Editorial Board Member of Scientific Reports. He received the National Best Dissertations Award in 2010 and the first award of Natural Science of Hubei Province in 2013.

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引用该论文

Ting YANG,Shasha LIAO,Li LIU,Jianji DONG. Large-range tunable fractional-order differentiator based on cascaded microring resonators[J]. Frontiers of Optoelectronics, 2016, 9(3): 399-405

Ting YANG,Shasha LIAO,Li LIU,Jianji DONG. Large-range tunable fractional-order differentiator based on cascaded microring resonators[J]. Frontiers of Optoelectronics, 2016, 9(3): 399-405

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