High-resolution Fourier-transform spectrometer chip with microphotonic silicon spiral waveguides

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DOIResolve DOI: http://doi.org/10.1364/OL.38.000706
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TypeArticle
Journal titleOptics Letters
ISSN0146-9592
Volume38
Issue5
Pages706708; # of pages: 3
SubjectAmplitude errors; Compact devices; Fabrication imperfections; Fourier transform spectrometers; Free spectral range; High resolution; Interferograms; Microphotonic waveguides; Optical delay; Optical path delays; Output waveguides; Retrieval algorithms; Si wire waveguide; Spiral waveguides; Transformation matrices; Wavelength resolution; Fourier transform infrared spectroscopy; Linear transformations; Silicon; Spectrometers; Waveguides; silicon; algorithm; article; equipment; Fourier analysis; interferometry; laser; photon; spectroscopy; Algorithms; Fourier Analysis; Interferometry; Lasers; Photons; Silicon; Spectrum Analysis
AbstractWe reporta stationary Fourier-transform spectrometer chip implemented in silicon microphotonic waveguides. The device comprises an array of 32 Mach-Zehnder interferometers (MZIs) with linearly increasing optical path delays between the MZI arms across the array. The optical delays are achieved by using Si-wire waveguides arranged in tightly coiled spirals with a compact device footprint of 12 mm2. Spectral retrieval is demonstrated in a single measurement of the stationary spatial interferogram formed at the output waveguides of the array, with a wavelength resolution of 40 pm within a free spectral range of 0.75 nm. The phase and amplitude errors arising from fabrication imperfections are compensated using a transformation matrix spectral retrieval algorithm. © 2013 Optical Society of America.
Publication date
LanguageEnglish
AffiliationNRC Institute for Microstructural Sciences; National Research Council Canada
Peer reviewedYes
NPARC number21270626
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Record identifierfe5e501a-8449-47a3-8d9d-54698dab37d8
Record created2014-02-17
Record modified2016-05-09
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