Integrated broadband dual-polarization Ge-rich SiGe mid-infrared Fourier-transform spectrometer
| Autor: | Liu, Qiankun, Ramírez, Joan, Vakarin, Vladyslav, Le Roux, Xavier, Alonso-Ramos, Carlos, Simola, Enrico, Frigerio, Jacopo, Ballabio, Andrea, Talamas Simola, Enrico, Bouville, David, Vivien, Laurent, Isella, Giovanni, Marris-Morini, Delphine |
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| Přispěvatelé: | Centre de Nanosciences et de Nanotechnologies [Orsay] (C2N), Université Paris-Sud - Paris 11 (UP11)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Politecn Milan, LNESS Dipartimento Fis, I-22100 Como, Italy |
| Rok vydání: | 2018 |
| Předmět: |
Heterodyne
Materials science Spectrometer Infrared business.industry Ultra-wideband 02 engineering and technology 021001 nanoscience & nanotechnology 7. Clean energy 01 natural sciences Atomic and Molecular Physics and Optics 010309 optics Wavelength Dual-polarization interferometry Optics 0103 physical sciences Broadband [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic Photonics 0210 nano-technology business |
| Zdroj: | Optics Letters Optics Letters, Optical Society of America-OSA Publishing, 2018, 43 (20), ⟨10.1364/OL.43.005021⟩ |
| ISSN: | 1539-4794 0146-9592 |
| DOI: | 10.1364/ol.43.005021 |
| Popis: | International audience; Miniaturized on-chip spectrometers covering a wide band of the mid-infrared spectrum have an immense potential for multi-target detection in high-impact applications like chemical sensing or environmental monitoring. Specifically, multi-aperture spatial heterodyne Fourier transform spectrometers (SHFTS) provide high throughput and improved tolerances against fabrication errors, compared to conventional counterparts. Still, state-of-the-art implementations have only shown single polarization operation in narrow bandwidths within the near and short infrared. Here, we demonstrate the first dual-polarization ultra wideband SHFTS working beyond 5 µm wavelength. We exploit the unique flexibility in material engineering of the graded-index germanium-rich silicon-germanium (Ge-rich SiGe) photonic platform to implement a SHFTS that can be operated in an unprecedented range of 800 cm-1, showing experimental resolution better than 15 cm-1 for both orthogonal polarizations and free-spectral-range of 132 cm-1, in the range between 5 µm and 8.5 µm wavelength |
| Databáze: | OpenAIRE |
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