Photonic Integrated Circuits for Microwave Astronomy
One of the main objectives of cosmology is the measurement of the Cosmic Microwave Background (CMB) polarization and, in particular, the so-called B-modes, which could demonstrate the existence of the primordial gravitational waves generated at the early stages of the Universe. For this reason, a ne...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-10-01
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| Series: | Inventions |
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| Online Access: | https://www.mdpi.com/2411-5134/8/6/135 |
| _version_ | 1827574568775057408 |
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| author | Guillermo Pascual-Cisneros Francisco J. Casas Patricio Vielva |
| author_facet | Guillermo Pascual-Cisneros Francisco J. Casas Patricio Vielva |
| author_sort | Guillermo Pascual-Cisneros |
| collection | DOAJ |
| description | One of the main objectives of cosmology is the measurement of the Cosmic Microwave Background (CMB) polarization and, in particular, the so-called B-modes, which could demonstrate the existence of the primordial gravitational waves generated at the early stages of the Universe. For this reason, a new integrated version of the heterodyne polarimeter photonic part shown on a previously proposed scheme that can be used in both direct imaging and interferometric instruments is presented. We have tested its properties using specific commercial software, obtaining promising results. Working as a direct imaging instrument, it is shown that the proposed polarimeter can provide sufficiently low polarization angle and polarization efficiency systematic errors, which are considered acceptable for current ground-based CMB polarization experiments dedicated to the characterization of the foreground signals affecting the lowest part of the frequency spectrum. |
| first_indexed | 2024-03-08T20:40:01Z |
| format | Article |
| id | doaj.art-9f0240f5f9584e458071abd2241a462b |
| institution | Directory Open Access Journal |
| issn | 2411-5134 |
| language | English |
| last_indexed | 2024-03-08T20:40:01Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Inventions |
| spelling | doaj.art-9f0240f5f9584e458071abd2241a462b2023-12-22T14:16:28ZengMDPI AGInventions2411-51342023-10-018613510.3390/inventions8060135Photonic Integrated Circuits for Microwave AstronomyGuillermo Pascual-Cisneros0Francisco J. Casas1Patricio Vielva2Instituto de Física de Cantabria (IFCA), Avda. Los Castros s/n, 39005 Santander, SpainInstituto de Física de Cantabria (IFCA), Avda. Los Castros s/n, 39005 Santander, SpainInstituto de Física de Cantabria (IFCA), Avda. Los Castros s/n, 39005 Santander, SpainOne of the main objectives of cosmology is the measurement of the Cosmic Microwave Background (CMB) polarization and, in particular, the so-called B-modes, which could demonstrate the existence of the primordial gravitational waves generated at the early stages of the Universe. For this reason, a new integrated version of the heterodyne polarimeter photonic part shown on a previously proposed scheme that can be used in both direct imaging and interferometric instruments is presented. We have tested its properties using specific commercial software, obtaining promising results. Working as a direct imaging instrument, it is shown that the proposed polarimeter can provide sufficiently low polarization angle and polarization efficiency systematic errors, which are considered acceptable for current ground-based CMB polarization experiments dedicated to the characterization of the foreground signals affecting the lowest part of the frequency spectrum.https://www.mdpi.com/2411-5134/8/6/135instrumentationCosmic Microwave Backgroundpolarizationmicrowavephotonicsastronomy |
| spellingShingle | Guillermo Pascual-Cisneros Francisco J. Casas Patricio Vielva Photonic Integrated Circuits for Microwave Astronomy Inventions instrumentation Cosmic Microwave Background polarization microwave photonics astronomy |
| title | Photonic Integrated Circuits for Microwave Astronomy |
| title_full | Photonic Integrated Circuits for Microwave Astronomy |
| title_fullStr | Photonic Integrated Circuits for Microwave Astronomy |
| title_full_unstemmed | Photonic Integrated Circuits for Microwave Astronomy |
| title_short | Photonic Integrated Circuits for Microwave Astronomy |
| title_sort | photonic integrated circuits for microwave astronomy |
| topic | instrumentation Cosmic Microwave Background polarization microwave photonics astronomy |
| url | https://www.mdpi.com/2411-5134/8/6/135 |
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