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

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...

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Veröffentlicht in:Frontiers of Optoelectronics (Online) 2016-09, Vol.9 (3), p.399-405
Hauptverfasser: YANG, Ting, LIAO, Shasha, LIU, Li, DONG, Jianji
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Sprache:eng
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Zusammenfassung: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.
ISSN:2095-2759
2095-2767
DOI:10.1007/s12200-016-0571-x