Cargando…
Polarization Calibration of a Microwave Polarimeter with Near-Infrared Up-Conversion for Optical Correlation and Detection
This paper presents a polarization calibration method applied to a microwave polarimeter demonstrator based on a near-infrared (NIR) frequency up-conversion stage that allows both optical correlation and signal detection at a wavelength of 1550 nm. The instrument was designed to measure the polariza...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9609977/ https://www.ncbi.nlm.nih.gov/pubmed/36298431 http://dx.doi.org/10.3390/s22208080 |
_version_ | 1784819155118063616 |
---|---|
author | Casas, Francisco J. Vielva, Patricio Barreiro, R. Belen Martínez-González, Enrique Pascual-Cisneros, G. |
author_facet | Casas, Francisco J. Vielva, Patricio Barreiro, R. Belen Martínez-González, Enrique Pascual-Cisneros, G. |
author_sort | Casas, Francisco J. |
collection | PubMed |
description | This paper presents a polarization calibration method applied to a microwave polarimeter demonstrator based on a near-infrared (NIR) frequency up-conversion stage that allows both optical correlation and signal detection at a wavelength of 1550 nm. The instrument was designed to measure the polarization of cosmic microwave background (CMB) radiation from the sky, obtaining the Stokes parameters of the incoming signal simultaneously, in a frequency range from 10 to 20 GHz. A linearly polarized input signal with a variable polarization angle is used as excitation in the polarimeter calibration setup mounted in the laboratory. The polarimeter systematic errors can be corrected with the proposed calibration procedure, achieving high levels of polarization efficiency (low polarization percentage errors) and low polarization angle errors. The calibration method is based on the fitting of polarization errors by means of sinusoidal functions composed of additive or multiplicative terms. The accuracy of the fitting increases with the number of terms in such a way that the typical error levels required in low-frequency CMB experiments can be achieved with only a few terms in the fitting functions. On the other hand, assuming that the calibration signal is known with the required accuracy, additional terms can be calculated to reach the error levels needed in ultrasensitive B-mode polarization CMB experiments. |
format | Online Article Text |
id | pubmed-9609977 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-96099772022-10-28 Polarization Calibration of a Microwave Polarimeter with Near-Infrared Up-Conversion for Optical Correlation and Detection Casas, Francisco J. Vielva, Patricio Barreiro, R. Belen Martínez-González, Enrique Pascual-Cisneros, G. Sensors (Basel) Article This paper presents a polarization calibration method applied to a microwave polarimeter demonstrator based on a near-infrared (NIR) frequency up-conversion stage that allows both optical correlation and signal detection at a wavelength of 1550 nm. The instrument was designed to measure the polarization of cosmic microwave background (CMB) radiation from the sky, obtaining the Stokes parameters of the incoming signal simultaneously, in a frequency range from 10 to 20 GHz. A linearly polarized input signal with a variable polarization angle is used as excitation in the polarimeter calibration setup mounted in the laboratory. The polarimeter systematic errors can be corrected with the proposed calibration procedure, achieving high levels of polarization efficiency (low polarization percentage errors) and low polarization angle errors. The calibration method is based on the fitting of polarization errors by means of sinusoidal functions composed of additive or multiplicative terms. The accuracy of the fitting increases with the number of terms in such a way that the typical error levels required in low-frequency CMB experiments can be achieved with only a few terms in the fitting functions. On the other hand, assuming that the calibration signal is known with the required accuracy, additional terms can be calculated to reach the error levels needed in ultrasensitive B-mode polarization CMB experiments. MDPI 2022-10-21 /pmc/articles/PMC9609977/ /pubmed/36298431 http://dx.doi.org/10.3390/s22208080 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Casas, Francisco J. Vielva, Patricio Barreiro, R. Belen Martínez-González, Enrique Pascual-Cisneros, G. Polarization Calibration of a Microwave Polarimeter with Near-Infrared Up-Conversion for Optical Correlation and Detection |
title | Polarization Calibration of a Microwave Polarimeter with Near-Infrared Up-Conversion for Optical Correlation and Detection |
title_full | Polarization Calibration of a Microwave Polarimeter with Near-Infrared Up-Conversion for Optical Correlation and Detection |
title_fullStr | Polarization Calibration of a Microwave Polarimeter with Near-Infrared Up-Conversion for Optical Correlation and Detection |
title_full_unstemmed | Polarization Calibration of a Microwave Polarimeter with Near-Infrared Up-Conversion for Optical Correlation and Detection |
title_short | Polarization Calibration of a Microwave Polarimeter with Near-Infrared Up-Conversion for Optical Correlation and Detection |
title_sort | polarization calibration of a microwave polarimeter with near-infrared up-conversion for optical correlation and detection |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9609977/ https://www.ncbi.nlm.nih.gov/pubmed/36298431 http://dx.doi.org/10.3390/s22208080 |
work_keys_str_mv | AT casasfranciscoj polarizationcalibrationofamicrowavepolarimeterwithnearinfraredupconversionforopticalcorrelationanddetection AT vielvapatricio polarizationcalibrationofamicrowavepolarimeterwithnearinfraredupconversionforopticalcorrelationanddetection AT barreirorbelen polarizationcalibrationofamicrowavepolarimeterwithnearinfraredupconversionforopticalcorrelationanddetection AT martinezgonzalezenrique polarizationcalibrationofamicrowavepolarimeterwithnearinfraredupconversionforopticalcorrelationanddetection AT pascualcisnerosg polarizationcalibrationofamicrowavepolarimeterwithnearinfraredupconversionforopticalcorrelationanddetection |