Novel low-loss waveguide delay lines using Vernier ring resonators for on-chip multi-λ microwave photonic signal processors

L. Zhuang, M. Hoekman, Willem Beeker, Arne Leinse, Rene Heideman, Paulus van Dijk, C.G.H. Roeloffzen

    Research output: Contribution to journalArticleAcademicpeer-review

    38 Citations (Scopus)


    In this paper, novel photonic delay lines (DLs) using Vernier/non-identical ring resonators (VRRs) are proposed and demonstrated, which are capable of simultaneous generation of multiple different delays at different wavelengths (frequencies). The simple device architectures and full reconfigurability allow the DLs to be integrated with other functional building blocks in photonic integrated circuits to realize on-chip, complex multi-λ microwave photonic signal processors with reduced system complexity. To prove the concept, DLs using VRRs in cascaded and coupled configurations have been fabricated in TriPleXTM waveguide technology, which enables a very low delay-induced loss of approximately 0.18 dB/100 ps. The fabricated DLs demonstrated simultaneous generation of four incremental delays, where a maximum incremental step of 550 ps and a corresponding top delay of 1650 ps were measured for a bandwidth up to 1 GHz. To our knowledge, this is the first report on VRRs for delay generation functionalities.
    Original languageUndefined
    Pages (from-to)1-9
    Number of pages9
    JournalLaser & photonics reviews
    Issue number4
    Publication statusPublished - 26 Jul 2013


    • optical signal processing
    • fiber optic links
    • EWI-23563
    • integrated photonics
    • IR-86966
    • photonic subsystems
    • Microwave photonics
    • METIS-299983
    • vernier ring resonator

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