Florjańczyk, MiroslawVillafranca Velasco, AitorCheben, PavelCalvo Padilla, María LuisaBock, Przemek J.Delâge, AndréSchmid, Jens H.Lapointe, JeanJanz, SiegfriedXu, Dan-XiaVachon, Martin2023-06-192023-06-192013978-1-4799-0683-310.1109/ICTON.2013.6602863https://hdl.handle.net/20.500.14352/35683©2013 IEEE. Financial support from the National Research Council and the Spanish Ministry of Economy is acknowledged under grants TEC2008-04105 and TEC2011-23629. International Conference on Transparent Optical Networks (ICTON) (15ª. 2003. Cartagena, España).We 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.engbook parthttp://dx.doi.org/10.1109/ICTON.2013.6602863http://ieeexplore.ieee.orgopen access535Spatial Heterodyne SpectrometerOn-InsulatorGrating DemultiplexerChipÓptica (Física)2209.19 Óptica Física