%0 Journal Article
%A Villafranca Velasco, Aitor
%A Cheben, Pavel
%A Bock, Przemek J.
%A Schmid, Jens H.
%A Delâge, André
%A Lapointe, Jean
%A Janz, Siegfried
%A Calvo Padilla, María Luisa
%A Xu, Dan-Xia
%A Florjańczyk, Mirosław
%A Vachon, Martin
%T High-resolution Fourier-transform spectrometer chip with microphotonic silicon spiral waveguides
%D 2013
%@ 0146-9592
%U https://hdl.handle.net/20.500.14352/33533
%X We report a 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 mm(2). 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.
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