SNR improvement in time-expanded phase-sensitive OTDR using Nyquist zone averaging
A recent advancement in distributed sensing known as the time-expanded phase-sensitive optical time-domain reflectometry (TE Φ-OTDR) addresses the trade-off between spatial resolution and detection bandwidth, enabling centimeter-scale resolution alongside RF detection bandwidth in the order of MHz....
| Authors: | ; ; ; ; ; |
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| Format: | Article |
| Publication date: | 2025 |
| Country: | España |
| Institution: | Universidad de Alcalá (UAH) |
| Repository: | e_Buah Biblioteca Digital Universidad de Alcalá |
| Language: | English |
| OAI Identifier: | oai:ebuah.uah.es:10017/65144 |
| Online Access: | http://hdl.handle.net/10017/65144 https://dx.doi.org/10.1364/OL.543115 |
| Access Level: | Open access |
| Keyword: | Electrónica Electronics |
| _version_ | 1878733805188022272 |
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| author | Sasikumar, Neethu |
| author2 | Soriano Amat, Miguel|||0000-0002-4819-3898 Srinivasan, Balaji Martín López, Sonia|||0000-0001-5203-6206 González Herráez, Miguel|||0000-0003-2555-2971 Fernández Ruiz, María del Rosario|||0000-0003-3561-2405 |
| author2_role | author author author author author |
| author_browse | Fernández Ruiz, María del Rosario|||0000-0003-3561-2405 González Herráez, Miguel|||0000-0003-2555-2971 Martín López, Sonia|||0000-0001-5203-6206 Sasikumar, Neethu Soriano Amat, Miguel|||0000-0002-4819-3898 Srinivasan, Balaji |
| author_facet | Sasikumar, Neethu Soriano Amat, Miguel|||0000-0002-4819-3898 Srinivasan, Balaji Martín López, Sonia|||0000-0001-5203-6206 González Herráez, Miguel|||0000-0003-2555-2971 Fernández Ruiz, María del Rosario|||0000-0003-3561-2405 |
| author_role | author |
| collection | e_Buah Biblioteca Digital Universidad de Alcalá |
| description | A recent advancement in distributed sensing known as the time-expanded phase-sensitive optical time-domain reflectometry (TE Φ-OTDR) addresses the trade-off between spatial resolution and detection bandwidth, enabling centimeter-scale resolution alongside RF detection bandwidth in the order of MHz. To date, TE Φ-OTDR approaches extract the fiber response from the first Nyquist zone (NZ). In this Letter, we propose a post-processing strategy to enhance the SNR by spectrally averaging different NZs. By evaluating 200 NZs, we have improved the average SNR of the traces by 23.56 dB compared to the standard demodulation scheme without degrading the acoustic sampling and the spatial resolution. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_5d5ce2d89fdf44aa6139bc4e7afa6501 |
| institution | Universidad de Alcalá (UAH) |
| instname_str | Universidad de Alcalá (UAH) |
| language | eng |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:ebuah.uah.es:10017/65144 |
| publishDate | 2025 |
| publishDateSort | 2025 |
| publisher | Optica Publishing Group |
| publisherStr | Optica Publishing Group |
| reponame_str | e_Buah Biblioteca Digital Universidad de Alcalá |
| spelling | SNR improvement in time-expanded phase-sensitive OTDR using Nyquist zone averaging Sasikumar, Neethu Soriano Amat, Miguel|||0000-0002-4819-3898 Srinivasan, Balaji Martín López, Sonia|||0000-0001-5203-6206 González Herráez, Miguel|||0000-0003-2555-2971 Fernández Ruiz, María del Rosario|||0000-0003-3561-2405 Electrónica Electronics A recent advancement in distributed sensing known as the time-expanded phase-sensitive optical time-domain reflectometry (TE Φ-OTDR) addresses the trade-off between spatial resolution and detection bandwidth, enabling centimeter-scale resolution alongside RF detection bandwidth in the order of MHz. To date, TE Φ-OTDR approaches extract the fiber response from the first Nyquist zone (NZ). In this Letter, we propose a post-processing strategy to enhance the SNR by spectrally averaging different NZs. By evaluating 200 NZs, we have improved the average SNR of the traces by 23.56 dB compared to the standard demodulation scheme without degrading the acoustic sampling and the spatial resolution. Ministerio de Ciencia e Innovación Agencia Estatal de Investigación European Commission Optica Publishing Group http://hdl.handle.net/10017/65144 https://dx.doi.org/10.1364/OL.543115 |
| spellingShingle | SNR improvement in time-expanded phase-sensitive OTDR using Nyquist zone averaging Sasikumar, Neethu Electrónica Electronics |
| title | SNR improvement in time-expanded phase-sensitive OTDR using Nyquist zone averaging |
| title_full | SNR improvement in time-expanded phase-sensitive OTDR using Nyquist zone averaging |
| title_fullStr | SNR improvement in time-expanded phase-sensitive OTDR using Nyquist zone averaging |
| title_full_unstemmed | SNR improvement in time-expanded phase-sensitive OTDR using Nyquist zone averaging |
| title_short | SNR improvement in time-expanded phase-sensitive OTDR using Nyquist zone averaging |
| title_sort | SNR improvement in time-expanded phase-sensitive OTDR using Nyquist zone averaging |
| topic | Electrónica Electronics |
| topic_facet | Electrónica Electronics |
| url | http://hdl.handle.net/10017/65144 https://dx.doi.org/10.1364/OL.543115 |