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Proceedings Paper

Smart on-chip Fourier-transform spectrometers harnessing machine learning algorithms (Conference Presentation)
Author(s): Alaine Herrero-Bermello; Jiangfeng Li; Mohammad Khazaei; Yuri Grinberg; Aitor Velasco; Martin Vachon; Pavel Cheben; Lina Stankovic; Vladimir Stankovic; Dan-Xia Xu; Jens Schmid; Carlos A. Alonso-Ramos

Paper Abstract

Miniaturized silicon photonics spectrometers have great potential for mass market applications like medicine and hazard detection. However, the performance of state-of-the-art silicon spectrometers is limited by fabrication imperfections and temperature variations. In this work, we present a fundamentally new strategy that combines machine learning algorithms and on-chip spatial heterodyne Fourier-transform spectroscopy to identify specific absorption features operated under a wide range of temperatures in the presence of fabrication imperfections. We experimentally show differentiation of four different input spectra with unknown temperature variations as large as 10 °C. This is about 100x increase in operational range, compared to state-of-the-art retrieval techniques.

Paper Details

Date Published: 9 March 2020
Proc. SPIE 11284, Smart Photonic and Optoelectronic Integrated Circuits XXII, 112841W (9 March 2020); doi: 10.1117/12.2546253
Show Author Affiliations
Alaine Herrero-Bermello, Instituto de Óptica "Daza de Valdés", Consejo Superior de Investigaciones Científicas (Spain)
Jiangfeng Li, Univ. of Strathclyde (United Kingdom)
Mohammad Khazaei, Univ. of Strathclyde (United Kingdom)
Yuri Grinberg, National Research Council Canada (Canada)
Aitor Velasco, Instituto de Óptica "Daza de Valdés", Consejo Superior de Investigaciones Científicas (Spain)
Martin Vachon, National Research Council Canada (Canada)
Pavel Cheben, National Research Council Canada (Canada)
Lina Stankovic, Univ. of Strathclyde (United Kingdom)
Vladimir Stankovic, Univ. of Strathclyde (United Kingdom)
Dan-Xia Xu, National Research Council Canada (Canada)
Jens Schmid, National Research Council Canada (Canada)
Carlos A. Alonso-Ramos, Ctr. de Nanosciences et de Nanotechnologies (France)

Published in SPIE Proceedings Vol. 11284:
Smart Photonic and Optoelectronic Integrated Circuits XXII
Sailing He; Laurent Vivien, Editor(s)

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