Transformation optics articles within Nature

Featured

• Review Article | 07 October 2020

  Programmable photonic circuits

  The current state of programmable photonic integrated circuits is discussed, including recent developments in their building blocks, circuit architectures, electronic control and programming strategies, as well as different application spaces.

  • Wim Bogaerts
  • , Daniel Pérez
  •  & Andrea Melloni

• Letter | 05 June 2013

  A temporal cloak at telecommunication data rate

  The ‘time cloak’ experiment is extended here using a time analogue of the Talbot effect in optics — in which a plane wave incident on a diffraction grating produces repeated images of the grating at regular distances — to show that almost half of the time axis can be concealed.

  • Joseph M. Lukens
  • , Daniel E. Leaird
  •  & Andrew M. Weiner

• Letter | 05 August 2010

  Loss-free and active optical negative-index metamaterials

  Metamaterials have the counterintuitive optical property of negative refraction index. They have a wide range of possible applications, including 'invisibility cloaks' and perfect lenses, but their performance is severely limited by absorption losses. These authors have incorporated an optical gain medium within a metamaterial as a way to compensate the intrinsic loss, and show that optical pumping leads to a significantly improved negative refraction index and figure of merit within the 722–738-nm visible wavelength range.

  • Shumin Xiao
  • , Vladimir P. Drachev
  •  & Vladimir M. Shalaev