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Integrable microwave filter based on a photonic crystal delay line

Author

Listed:
  • Juan Sancho

    (ITEAM Research Institute, Optical and Quantum Communications Group, Universidad Politécnica de Valencia, Camino de Vera s/n)

  • Jerome Bourderionnet

    (Thales Research and Technology)

  • Juan Lloret

    (ITEAM Research Institute, Optical and Quantum Communications Group, Universidad Politécnica de Valencia, Camino de Vera s/n)

  • Sylvain Combrié

    (Thales Research and Technology)

  • Ivana Gasulla

    (ITEAM Research Institute, Optical and Quantum Communications Group, Universidad Politécnica de Valencia, Camino de Vera s/n)

  • Stephane Xavier

    (Thales Research and Technology)

  • Salvador Sales

    (ITEAM Research Institute, Optical and Quantum Communications Group, Universidad Politécnica de Valencia, Camino de Vera s/n)

  • Pierre Colman

    (Thales Research and Technology)

  • Gaelle Lehoucq

    (Thales Research and Technology)

  • Daniel Dolfi

    (Thales Research and Technology)

  • José Capmany

    (ITEAM Research Institute, Optical and Quantum Communications Group, Universidad Politécnica de Valencia, Camino de Vera s/n)

  • Alfredo De Rossi

    (Thales Research and Technology)

Abstract

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.

Suggested Citation

  • Juan Sancho & Jerome Bourderionnet & Juan Lloret & Sylvain Combrié & Ivana Gasulla & Stephane Xavier & Salvador Sales & Pierre Colman & Gaelle Lehoucq & Daniel Dolfi & José Capmany & Alfredo De Rossi, 2012. "Integrable microwave filter based on a photonic crystal delay line," Nature Communications, Nature, vol. 3(1), pages 1-9, January.
    • Handle: RePEc:nat:natcom:v:3:y:2012:i:1:d:10.1038_ncomms2092
    DOI: 10.1038/ncomms2092
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    Cited by:

    1. Matthew Garrett & Yang Liu & Moritz Merklein & Cong Tinh Bui & Choon Kong Lai & Duk-Yong Choi & Stephen J. Madden & Alvaro Casas-Bedoya & Benjamin J. Eggleton, 2023. "Integrated microwave photonic notch filter using a heterogeneously integrated Brillouin and active-silicon photonic circuit," Nature Communications, Nature, vol. 14(1), pages 1-9, December.

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