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High Resolution Fourier-Transform Microspectroscopy Based on Spiral Silicon Waveguides

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Florjańczyk, Miroslaw and Villafranca Velasco, Aitor and Cheben, Pavel and Calvo Padilla, María Luisa and Bock, Przemek J. and Delâge, André and Schmid, Jens H. and Lapointe, Jean and Janz, Siegfried and Xu, Dan-Xia and Vachon, Martin (2013) High Resolution Fourier-Transform Microspectroscopy Based on Spiral Silicon Waveguides. In 2013 15th International Conference On Transparent Optical Networks (ICTON 2013). IEEE-Inst Electrical Electronics Engineers Inc.. ISBN 978-1-4799-0683-3

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Official URL: http://dx.doi.org/10.1109/ICTON.2013.6602863


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Abstract

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.


Item Type:Book Section
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©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).

Uncontrolled Keywords:Spatial Heterodyne Spectrometer, On-Insulator, Grating Demultiplexer, Chip
Subjects:Sciences > Physics > Optics
ID Code:25299
Deposited On:09 May 2014 11:49
Last Modified:09 May 2014 11:49

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