Photonic ring resonator notch filters for astronomical OH suppression

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

doi:10.1117/12.2283353

2 January 2018 Photonic ring resonator notch filters for astronomical OH suppression

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

Proceedings Volume 10456, Nanophotonics Australasia 2017; 104564B (2018) https://doi.org/10.1117/12.2283353
Event: SPIE Nanophotonics Australasia, 2017, Melbourne, Australia

Abstract

Photonic ring resonators used as wavelength notch filters are a promising novel solution to enable astronomical instruments to remove the signal from atmospheric OH emission in the near-infrared wavelength range. We derive design requirements from theory and finite difference time domain simulations. We find rings with radii less than 10 microns provide an adequate free spectral range for silicon nitride abd less than 3 microns for silicon. One challenge for this application is the requirement for many rings in series to suppress particular wavelengths within 0.2nm. We report progress in fabricating both silicon and silicon nitride rings for OH suppression.

Citation Download Citation

S. Kuhlmann, P. Liu, S. C. Ellis, K. Kuehn, H. Spinka, D. Underwood, L. Ocola, R. R. Gupta, and N. P. Stern "Photonic ring resonator notch filters for astronomical OH suppression", Proc. SPIE 10456, Nanophotonics Australasia 2017, 104564B (2 January 2018); https://doi.org/10.1117/12.2283353

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