High resolution Fourier-transform microspectroscopy based on spiral silicon waveguides

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DOIResolve DOI: http://doi.org/10.1109/ICTON.2013.6602863
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TypeArticle
Proceedings titleICTON 2013: 15th International Conference on Transparent Optical Networks, June 23-27, 2013, Cartagena, Spain : conference proceedings
Series titleInternational Conference on Transparent Optical Networks : [proceedings]; no. 6602863
Conference15th International Conference on Transparent Optical Networks, ICTON 2013, June 23-27, 2013, Cartagena, Spain
ISSN2162-7339
ISBN9781479906826
Article number6602863
SubjectFabrication imperfections; Fourier transform spectrometers; Machzehnder interferometers (MZI); Optical path difference; Silicon microphotonics; spectral retrieval; Transformation matrices; Fourier transform infrared spectroscopy; Linear transformations; Transparent optical networks
AbstractWe report a spatial heterodyne Fourier-transform spectrometer consisting of an array of Mach-Zehnder interferometers (MZI) implemented in silicon microphotonics. Optical path differences between the MZI arms increase linearly along the array, generating a wavelength-dependent interferogram which enables the retrieval of the source spectrum with a single measurement. Optical delays were implemented with Si-wire waveguides arranged in tightly coiled spirals to achieve a high resolution in a reduced footprint. Our spectral retrieval algorithm compensates phase and amplitude errors arising from fabrication imperfections by using a transformation matrix based on the calibration data. A wavelength resolution of 40 pm within a free spectral range of 0.75 nm is demonstrated.
Publication date
LanguageEnglish
AffiliationInformation and Communication Technologies; National Research Council Canada
Peer reviewedYes
NPARC number21270449
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Record identifierbdc4fe7d-0d56-4bc0-806b-635a0ab7661e
Record created2014-02-12
Record modified2016-05-09
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