Multiband processing of multimode light

Combining 3D photonic lanterns with waveguide Bragg gratings

Izabela Spaleniak*, Simon Gross, Nemanja Jovanovic, Robert J. Williams, Jon S. Lawrence, Michael J. Ireland, Michael J. Withford

*Corresponding author for this work

Research output: Contribution to journalArticle

34 Citations (Scopus)


The first demonstration of narrowband spectral filtering of multimode light on a 3D integrated photonic chip using photonic lanterns and waveguide Bragg gratings is reported. The photonic lanterns with multi-notch waveguide Bragg gratings were fabricated using the femtosecond direct-write technique in boro-aluminosilicate glass (Corning, Eagle 2000). Transmission dips of up to 5 dB were measured in both photonic lanterns and reference single-mode waveguides with 10.4-mm-long gratings. The result demonstrates efficient and symmetrical performance of each of the gratings in the photonic lantern. Such devices will be beneficial to space-division multiplexed communication systems as well as for units for astronomical instrumentation for suppression of the atmospheric telluric emission from OH lines.

Original languageEnglish
Pages (from-to)L1-L5
Number of pages5
JournalLaser and Photonics Reviews
Issue number1
Publication statusPublished - Jan 2014


  • Astronomical optics
  • Integrated optics
  • Ultrafast material processing
  • Wavelength filtering devices

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