Integrable microwave filter based on a photonic crystal delay line.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Without internal affiliation

  • Author: Sancho, Juan

    Universidad Politecnica de Valencia, Spain

  • Author: Bourderionnet, Jerome

    Thales Research and Technology, France

  • Author: Lloret, Juan

    Universidad Politecnica de Valencia, Spain

  • Author: Combrié, Sylvain

    Thales Research and Technology, France

  • Author: Gasulla, Ivana

    Universidad Politecnica de Valencia, Spain

  • Author: Xavier, Stephane

    Thales Research and Technology, France

  • Author: Sales, Salvador

    Universidad Politecnica de Valencia, Spain

  • Author: Colman, Pierre

    Unknown

  • Author: Lehoucq, Gaelle

    Thales Research and Technology, France

  • Author: Dolfi, Daniel

    Thales Research and Technology, France

  • Author: Capmany, José

    Universidad Politecnica de Valencia, Spain

  • Author: De Rossi, Alfredo

    Thales Research and Technology, France

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The availability of a tunable delay line with a chip-size footprint is a crucial step towards the full implementation of integrated microwave photonic signal processors. Achieving a large and tunable group delay on a millimetre-sized chip is not trivial. Slow light concepts are an appropriate solution, if propagation losses are kept acceptable. Here we use a low-loss 1.5 mm-long photonic crystal waveguide to demonstrate both notch and band-pass microwave filters that can be tuned over the 0-50-GHz spectral band. The waveguide is capable of generating a controllable delay with limited signal attenuation (total insertion loss below 10 dB when the delay is below 70 ps) and degradation. Owing to the very small footprint of the delay line, a fully integrated device is feasible, also featuring more complex and elaborate filter functions.
Original languageEnglish
JournalNature Communications
Publication date2012
Volume3
Pages1075
ISSN2041-1723
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 16
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