Photonic fractional-order differentiator using an soi microring resonator with an MMI coupler

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DOIResolve DOI: http://doi.org/10.1109/LPT.2013.2266252
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TypeArticle
Journal titleIEEE Photonics Technology Letters
ISSN1041-1135
Volume25
Issue15
Article number6523070
Pages14081411; # of pages: 4
SubjectFractional order; Fractional order differentiator; Input polarization; Microring resonator; Multimode interference couplers; Optical Differentiator; Resonance wavelengths; Silicon photonics; Integrated optics; Phase shift; Phase shifters; Photonics; Optical resonators
AbstractAn optically tunable fractional order temporal differentiator implemented using a silicon-on-isolator microring resonator with a multimode interference (MMI) coupler is proposed and experimentally demonstrated. Through changing the input polarization state, the self coupling coefficient and the loss factor of the designed ring resonator with the MMI coupler are changed. Correspondingly, the coupling regime is changed. Through changing the coupling regime from over-coupled to under-coupled regime, the phase shift in the resonance wavelength is changed from <π to >π. This tunable phase shift is used to implement a tunable fractional order photonic differentiator with an order tunable from <1 to > 1. The proposed fractional order differentiator is demonstrated experimentally. A Gaussian pulse with a bandwidth of 45 GHz is temporally differentiated with a tunable order of 0.37, 0.67, 1, 1.2, and 1.3. © 1989-2012 IEEE.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Institute for Microstructural Sciences (IMS-ISM)
Peer reviewedYes
NPARC number21269803
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Record identifierdea43f32-e767-4098-9175-ff1ba7c4473f
Record created2013-12-13
Record modified2016-05-09
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