| DOI | Resolve DOI: https://doi.org/10.1109/LPT.2015.2496729 |
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| Author | Search for: Nedeljkovic, Milos; Search for: Velasco, Aitor V.; Search for: Khokhar, Ali Z.; Search for: Delage, Andre1; Search for: Cheben, Pavel1ORCID identifier: https://orcid.org/0000-0003-4232-9130; Search for: Mashanovich, Goran Z. |
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| Affiliation | - National Research Council of Canada. Information and Communication Technologies
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| Format | Text, Article |
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| Subject | silicon photonics; spectroscopy; infrared |
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| Abstract | Mid-infrared absorption spectroscopy is highly relevant for a wide range of sensing applications. In this letter, we demonstrate a Fourier-transform spectrometer chip based on the principle of spatial heterodyning implemented in the silicon-on-insulator waveguide platform, and operating near 3.75-μm wavelength. The spectrometer comprises a waveguide splitting tree feeding to an array of 42 Mach-Zehnder interferometers with linearly increasing optical path length differences. A spectral retrieval algorithm based on calibration matrices is applied to the stationary output pattern of the array, compensating for any phase and amplitude errors arising from fabrication imperfections. A spectral resolution below 3 nm is experimentally demonstrated. |
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| Publication date | 2015-11-02 |
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| Publisher | IEEE |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 23000044 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | e1427247-f7f5-4464-93f8-6f578cfca0c8 |
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| Record created | 2016-05-31 |
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| Record modified | 2020-04-22 |
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