Cited by 492Photonic and Optical DevicesPhotorefractive and Nonlinear OpticsGaN-based semiconductor devices and materials

Ultra-low-loss high-aspect-ratio Si_3N_4 waveguides

Open access
Bauters, Jared F., Heck, Martijn J. R., John, Demis, Dai, Daoxin, Tien, Ming-Chun, Barton, Jonathon S., Leinse, Arne, Heideman, René G. +2 more·2011·Optics Express

Abstract

We characterize an approach to make ultra-low-loss waveguides using stable and reproducible stoichiometric Si3N4 deposited with low-pressure chemical vapor deposition. Using a high-aspect-ratio core geometry, record low losses of 8-9 dB/m for a 0.5 mm bend radius down to 3 dB/m for a 2 mm bend radius are measured with ring resonator and optical frequency domain reflectometry techniques. From a waveguide loss model that agrees well with experimental results, we project that 0.1 dB/m total propagation loss is achievable at a 7 mm bend radius with this approach.

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Crossref · 10.1364/oe.19.003163

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  • SiN waveguides can have lower scattering losses from sidewall roughness than Si waveguides.

    “Also, SiN waveguides can have lower scattering losses from sidewall roughness in comparison to Si waveguides [27,28].”

    From Integrated 1 × 3 MEMS silicon nitride photonics switch (2022) · cites this paper as [28]

    The Introduction says sidewall scattering in Si₃N₄ waveguides can be minimized with a high-aspect-ratio core, and Section 2.3 models the resulting reduction. Section 4 compares overall propagation losses with other waveguides, including a silicon-on-insulator example, but does not establish that the sidewall-roughness scattering component is lower in Si₃N₄ than in silicon waveguides. (LLM, conf=0.82)

    Experimental — accuracy not yet measured

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Research works printed but not linked: 5

  1. [6]B. Larsen, L. Nielsen, K. Zenth, L. Leick, C. Laurent-Lund, L. Andersen, and K. Mattsson, “A Low-Loss, Silicon-Oxynitride Process for Compact Optical Devices,” in Proceedings of ECOC (Rimini, Italy, 2003).
  2. [8]T. Kominato, Y. Hida, M. Itoh, H. Takahashi, S. Sohma, T. Kitoh, and Y. Hibino, “Extremely low-loss (0.3 dB/m) and long silica-based waveguides with large width and clothoid curve connection,” in Proceedings of ECOC (Stockholm, Sweden, 2004).
  3. [11]A. Melloni, F. Morichetti, R. Costa, G. Cusmai, R. Heideman, R. Mateman, D. Geuzebroek, and A. Borreman, “TriPleXTM: a new concept in optical waveguiding,” in Proceedings of the 13th European Conference on Integrated Optics (Copenhagen, Denmark, 2007), pp. 3–6.
  4. [24]M. Fadel, and E. Voges, “Low-Loss SiON Ring Resonators on Silicon for 1.55 µm Wavelength,” in Proceedings of the 13th European Conference on Integrated Optics (Copenhagen, Denmark, 2007), WG3.
  5. [26]J. Guo, G. A. Vawter, M. J. Shaw, G. R. Hadley, P. Esherick, A. Jain, and C. R. Alford, “Characterization of Si3N4/SiO2 planar lightwave circuits and ring resonators,” in Proc. SPIE 5350, 13–22 (2004).

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Authors
Bauters, J. F., Heck, M. J. R., John, D., Dai, D., Tien, M.-C., Barton, J. S., Leinse, A., Heideman, R. G., Blumenthal, D. J., & Bowers, J. E.
Affiliations
University of California, Santa Barbara (US)
Venue
Optics Express
Published
2011-02-03
Volume
19
Issue
4
Pages
3163
ISSN
1094-4087 (ISSN-L)
OpenAlex
W2169561975
Cited by
492
References
28
Citations by year
2026: 33 · 2025: 48 · 2024: 37 · 2023: 22 · 2022: 38 · 2021: 38 · 2020: 39 · 2019: 30 · 2018: 35 · 2017: 47 · 2016: 33 · 2015: 25 · 2014: 17 · 2013: 22 · 2012: 14
FWCI
14.56
Type
journal article
Language
en
Open access
Locations
  • Optics Express (publishedVersion)
  • PubMed (publishedVersion)
Funders
Defense Advanced Research Projects Agency
Topics
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Photonic and Optical Devices
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Photorefractive and Nonlinear Optics
  • Physical Sciences › Physics and Astronomy › Condensed Matter Physics › GaN-based semiconductor devices and materials
Keywords
silicon nitride waveguides, low-loss waveguides, low-pressure chemical vapor deposition, bending loss, ring resonator, optical frequency domain reflectometry, integrated photonics

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