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Photonic Integrated Circuits for Microwave Astronomy.
- Source :
- Inventions (2411-5134); Dec2023, Vol. 8 Issue 6, p135, 12p
- Publication Year :
- 2023
-
Abstract
- 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. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 24115134
- Volume :
- 8
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- Inventions (2411-5134)
- Publication Type :
- Academic Journal
- Accession number :
- 174440728
- Full Text :
- https://doi.org/10.3390/inventions8060135