Tunable fractional-order photonic differentiator based on the inverse Raman scattering in a silicon microring resonator

Boyuan Jin, Jinhui Yuan, Chongxiu Yu, Xinzhu Sang, Qiang Wu, Feng Li, Kuiru Wang, Binbin Yan, Gerald Farrell, Ping Kong Alexander Wai

Research output: Journal article publicationJournal articleAcademic researchpeer-review

10 Citations (Scopus)


A novel photonic fractional-order temporal differentiator is proposed based on the inverse Raman scattering (IRS) in the side-coupled silicon microring resonator. By controlling the power of the pump lightwave, the intracavity loss is adjusted and the coupling state of the microring resonator can be changed, so the continuously tunable differentiation order is achieved. The influences of input pulse width on the differentiation order and the output deviation are discussed. Due to the narrow bandwidth of IRS in silicon, the intracavity loss can be adjusted on a specific resonance while keeping the adjacent resonances undisturbed. It can be expected that the proposed scheme has the potential to realize different differentiation orders simultaneously at different resonant wavelengths.
Original languageEnglish
Pages (from-to)11141-11151
Number of pages11
JournalOptics Express
Issue number9
Publication statusPublished - 4 May 2015

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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