Photonic ring resonator notch filters for astronomical OH line suppression

P. Liu, S. Kuhlmann, S. C. Ellis, K. Kuehn, H. Spinka, D. Underwood, L. Ocola, R. R. Gupta, N. P. Stern

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Photonic ring resonator arrays used as notch filters are a promising novel solution to improve the signal-to-noise ratio of ground-based astronomical observations by suppressing OH emission lines in the near-infrared (NIR) wavelength range (0.9-2.5 μm). We aim to fabricate a series of ring resonators connected by a waveguide, each with its resonance wavelength and full-width-half-maximum (FWHM) matched with one of the OH emission lines.

Original languageEnglish (US)
Title of host publicationAdvances in Optical Astronomical Instrumentation 2019
EditorsSimon Ellis, Celine d'Orgeville
ISBN (Electronic)9781510631465
StatePublished - 2020
EventAdvances in Optical Astronomical Instrumentation 2019 - Melbourne, Australia
Duration: Dec 9 2019Dec 12 2019

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceAdvances in Optical Astronomical Instrumentation 2019


  • Astronomical optics
  • Filters
  • Micro-optical devices
  • Ring resonators
  • Waveguides

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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