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Related Experiment Video

Updated: May 18, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
11:08

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

Integrable microwave filter based on a photonic crystal delay line.

Juan Sancho1, Jerome Bourderionnet, Juan Lloret

  • 1ITEAM Research Institute, Optical and Quantum Communications Group, Universidad Politécnica de Valencia, Camino de Vera s/n, 46022 Valencia, Spain.

Nature Communications
|September 27, 2012
PubMed
Summary

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We developed a chip-size tunable delay line using a photonic crystal waveguide, enabling precise control over microwave signals. This breakthrough facilitates the creation of compact, integrated microwave photonic signal processors with tunable filters.

Area of Science:

  • Photonics
  • Microwave Engineering
  • Materials Science

Background:

  • Integrated microwave photonic signal processors require tunable delay lines.
  • Achieving large, tunable group delay on a chip-size footprint is challenging.
  • Slow light concepts offer a solution if losses are managed.

Purpose of the Study:

  • To demonstrate a chip-size tunable delay line for microwave photonic applications.
  • To create tunable notch and band-pass microwave filters.
  • To assess signal delay, attenuation, and degradation.

Main Methods:

  • Utilized a low-loss, 1.5 mm-long photonic crystal waveguide.
  • Implemented slow light concepts for tunable group delay.
  • Characterized filter performance across the 0-50 GHz spectral band.

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Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
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Microwave Photonics Systems Based on Whispering-gallery-mode Resonators

Published on: August 5, 2013

Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation
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Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation

Published on: February 25, 2017

Related Experiment Videos

Last Updated: May 18, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
11:08

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
12:18

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators

Published on: August 5, 2013

Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation
13:02

Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation

Published on: February 25, 2017

Main Results:

  • Demonstrated tunable notch and band-pass microwave filters (0-50 GHz).
  • Achieved controllable delay with limited signal attenuation (insertion loss < 10 dB for < 70 ps delay).
  • Confirmed minimal signal degradation.

Conclusions:

  • A chip-size tunable delay line is feasible using photonic crystal waveguides.
  • This technology enables compact, integrated microwave photonic devices with complex filter functions.
  • Low propagation losses are critical for practical slow light applications.