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Waveguide sub-wavelength structures: a review of principles and applications

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1002/lpor.201400083
AuthorSearch for: ; Search for: ; Search for: 1ORCID identifier: https://orcid.org/0000-0003-4232-9130; Search for: ; Search for: ; Search for: 1; Search for: 1; Search for: 1; Search for: ; Search for: ; Search for: 1
Name affiliation
  1. National Research Council of Canada. NRC Institute for Microstructural Sciences
FormatText, Article
Subjectanti reflective coatings; athermal waveguides; broadband waveguides; dispersion engineering; grating couplers; sub-wavelength structures; waveguide crossings; wavelength demultiplexers
Abstract
Periodic structures with a sub-wavelength pitch have been known since Hertz conducted his first experiments on the polarization of electromagnetic waves. While the use of these structures in waveguide optics was proposed in the 1990s, it has been with the more recent developments of silicon photonics and high-precision lithography techniques that sub-wavelength structures have found widespread application in the field of photonics. This review first provides an introduction to the physics of sub-wavelength structures. An overview of the applications of sub-wavelength structures is then given including: anti-reflective coatings, polarization rotators, high-efficiency fiber-chip couplers, spectrometers, high-reflectivity mirrors, athermal waveguides, multimode interference couplers, and dispersion engineered, ultra-broadband waveguide couplers among others. Particular attention is paid to providing insight into the design strategies for these devices. The concluding remarks provide an outlook on the future development of sub-wavelength structures and their impact in photonics.
Publication date
PublisherWiley
In
  • Laser and Photonics Reviews 9, no. 1: 25–49.
LanguageEnglish
Peer reviewedYes
NPARC number21275709
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Record identifier481c4163-f195-42e5-8888-b5834de8102a
Record created2015-07-14
Record modified2020-04-22
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